About Molybdenum Boride MoB2 Powder:Molybdenum boride powder is a compound of molybdenum and boron.Their most notable feature is their high hardness. It has very high strength, very high hardness, good high-temperature resistance,…
About Molybdenum Boride MoB2 Powder:
Molybdenum boride powder is a compound of molybdenum and boron.Their most notable feature is their high hardness. It has very high strength, very high hardness, good high-temperature resistance, good electrical conductivity and excellent oxidation resistance. Molybdenum boride has been used as a hard coating material for high-temperature structural applications and also in the form of Mob /CoCr cermet coatings. It is also used as a brazing material, especially in electronic components. Molybdenum boride has potential industrial application value, such as wear-resistance and corrosion resistance. Feel free to send an inquiry to get the latest price if you would like to buy Molybdenum Boride MoB2 Powder in bulk.
Molybdenum boride powder MoB2 Features:
CAS No. : 12006-99-4
EINECS No.: 234-502-8
MDL No.: MFCD00014219
Appearance: yellow grey crystal
Molecular Formula: MoB2
Molecular Weight: 202.69
Density: 9.26 g/ cm3
Melting point: 2280 ºC
Particle size: 5-10um
Application of Molybdenum Boride MoB2 Powder:
Molybdenum Boride (MO2B) is used for brazing (welding) special metals and non-corrosive electronic connectors and switches.
Molybdenum boride (Mo2B) is also used in the manufacture of high-speed cutting tools and mechanical corrosion-free, wear-resistant parts.
Molybdenum boride (Mo2B) is mainly used as an additive of electron tungsten and molybdenum alloy.
Molybdenum boride (Mo2B) can be used in the manufacture of wear semiconductor thin films and coatings.
Storage Condition of Molybdenum boride powder MoB2:
The damp reunion will affect MoB2 powder dispersion performance and using effects, therefore, molybdenum boride MoB2 powder should be sealed in vacuum packing and stored in cool and dry room, the molybdenum boride MoB2 powder can not be exposure to air. In addition, the MoB2 powder should be avoided under stress.
Packing & Shipping of Molybdenum boride powder MoB2:
We have many different kinds of packing which depend on the molybdenum boride MoB2 powder quantity.
Molybdenum boride MoB2 powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Molybdenum boride MoB2 powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
Molybdenum Boride MoB2 Powder Properties |
Other Names | Molybdenum monoboride, Borylidynemolybdenum, CAS 12007-27-1
(molybdenum diboride, MoB2) |
CAS No. | 12006-99-4 |
Compound Formula | MoB2 |
Molecular Weight | 106.75 |
Appearance | Gray to blue powder/pieces |
Melting Point | N/A |
Solubility in water | N/A |
Density | 9.20 g/cm3 |
Purity | >99% |
Particle Size | 5-10um |
Boling point | N/A |
Specific Heat | N/A |
Thermal Conductivity | N/A |
Thermal Expansion | N/A |
Young’s Modulus | N/A |
Exact Mass | 108.914714 |
Monoisotopic Mass | 108.914711 Da |
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Molybdenum Boride MoB2 Powder Health & Safety Information |
Safety Warning | Warning |
Hazard Statements | N/A |
Flashing point | N/A |
Hazard Codes | N/A |
Risk Codes | N/A |
Safety Statements | N/A |
RTECS Number | N/A |
Transport Information | N/A |
WGK Germany | 3 |
Product name: Vanadium borideCAS number: 12007-37-3MDL number:MFCD00049697EINECS:234-509-6PubChem:24860374Molecular formula: VB2Density: 5.1 g/ml,25/4℃Melting point: 2450 °CHardness: 2800 (kg/mm2)About Vanadium Boride VB2 Powder:Vanadium Boride (VB2) has a hexagonal crystal structure with a melting point of…
Product name: Vanadium boride
CAS number: 12007-37-3
MDL number:MFCD00049697
EINECS:234-509-6
PubChem:24860374
Molecular formula: VB2
Density: 5.1 g/ml,25/4℃
Melting point: 2450 °C
Hardness: 2800 (kg/mm2)
About Vanadium Boride VB2 Powder:
Vanadium Boride (VB2) has a hexagonal crystal structure with a melting point of 2980 degrees Celsius, a large oxidation temperature, a large hardness. VB2 has been proven to have a Gaver’s hardness having 27.2 ± 1.5 GPa, high thermal stability in the air, and at the highest resistivity value (41 μΩcm) in the transition metal boride at room temperature in the transition metal boride. Feel free to send an inquiry to get the latest price if you would like to buy Vanadium Boride VB2 Powder in bulk.
How is Vanadium Boride VB2 Powder produced?
1. After mixing boron and niobium, press molding, and heat it in the heating furnace.
2. Adopt synthesis method. After mixing element boron and elemental bismuth, press molding, heating in the heating furnace
Application of Vanadium Boride VB2 Powder:
VB2 is also a nature of the nature of hard refractory ceramics and the properties of an excellent electrical conductor. Therefore, VB2 can be used as fine ceramic raw materials for producing wear-resistant and semiconductor films. Can be used in regions of conductive ceramic materials.
Specifications of Vanadium Boride VB2 powder:
Diboride vanadium (VB2) has a hexagonal crystal structure, a melting point of 2980 degrees Celsius, great hardness, resistance to oxidation temperature big 1000 degrees Celsius, can be used in areas such as conductive ceramic material, are atomic crystals.
Storage Condition of Vanadium Boride VB2 powder:
The damp reunion will affect VB2 powder dispersion performance and using effects, therefore, vanadium boride VB2 powder should be sealed in vacuum packing and stored in the cool and dry room, the vanadium boride VB2 powder can not be exposure to air. In addition, the VB2 powder should be avoided under stress.
Packing & Shipping of Vanadium Boride VB2 powder:
We have many different kinds of packing which depend on the vanadium boride VB2 powder quantity.
Vanadium boride VB2 powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Vanadium boride VB2 powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
Vanadium Boride VB2 Powder Properties |
Other Names | Diborylidynevanadium, Vanadium diboride, vanadium boride (1:2),
VB2 Powder, Vanadium Boride |
CAS No. | 12007-37-3 |
Compound Formula | VB2 |
Molecular Weight | 72.564 |
Appearance | refractory solid |
Melting Point | N/A |
Solubility in water | N/A |
Density | 5.1 g/cm3 |
Purity | >99% |
Particle Size | 325 mesh |
Boling point | N/A |
Specific Heat | N/A |
Thermal Conductivity | N/A |
Thermal Expansion | N/A |
Young’s Modulus | N/A |
Exact Mass | 72.962 |
Monoisotopic Mass | 72.962578 |
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Vanadium Boride VB2 Powder Health & Safety Information |
Safety Warning | N/A |
Hazard Statements | N/A |
Flashing point | N/A |
Hazard Codes | N/A |
Risk Codes | N/A |
Safety Statements | N/A |
RTECS Number | N/A |
Transport Information | N/A |
WGK Germany | N/A |
About Tantalum Boride TaB2 Powder :Tantalum diboride is a gray powder. Tantalum diboride is completely insoluble in acid, nitric acid and aqua regia. Slightly soluble in hot sulfuric acid and hydrofluoric acid,…
About Tantalum Boride TaB2 Powder :
Tantalum diboride is a gray powder. Tantalum diboride is completely insoluble in acid, nitric acid and aqua regia. Slightly soluble in hot sulfuric acid and hydrofluoric acid, soluble in molten alkali and sodium carbonate. The Vickers hardness of the TaB2 film and crystal is about 30 GPa.These materials are stable to oxidation and acid corrosion up to 700°C.
TaB2 has the same hexagonal structure as most diborides (Alb 2, MGB2, etc.).It also has the following space groups: TAB (orthogonal-crystal system, iodized ((I), Cmcm), TA5B6 (Cmmm), TA3B4 (IMmm), TAB2 (hexagonal, aluminum diboride) type, P6 / mm2). Feel free to send an inquiry to get the latest price if you would like to buy Tantalum Boride TaB2 Powder in bulk.
How is Tantalum Boride TaB2 Powder produced?
Under vacuum or cylinder gas protection, the powder is prepared by reacting with the element boron, or the mixture of carbon and oxidizing load and boron oxide is made.
Single crystals of Tab2 (about 1 cm in diameter and 6 cm in length) can be produced by the floating zone method.
Tantalum boride films can be deposited from gas mixtures of Tacl 5-Bcl3-H 2-Ar at temperatures of 540 — 800 °C.TAB 2 (single phase) is deposited at a feedstock gas flow ratio of six (BCL 3 / TACL 5) and at temperatures above 600°C.TAB (single-phase) was deposited at BCl 3 / TaCl 5 = 2-4 and T = 600-700°C.
Tab2 nanocrystals were successfully synthesized by reducing NaBH 4 to Ta 2O 5 with a molar ratio of 1:4 M: B at 700-900°C under argon.
Ta 2 O 5 + 6.5 NaBH 4 →2 TAB 2 + 4 Na (G, L) + 2.5 NaBO 2 + 13 H 2 (G)
Application of Tantalum Boride TaB2 Powder :
Tantalum boride is a compound of tantalum and boron and is noted for its extremely high hardness. Due to its high hardness, tantalum diboride can be used as high-temperature materials and abrasives, as well as wear-resistant coatings, semiconductor films, electronic materials, ceramic materials, rare earth materials, alloy materials, etc.
Tantalum diboride is a metallic luster crystal with a high melting point, wear-resistance and hardness. It is widely used in the fields of ultra-high temperature ceramic materials, hard materials or composite material reinforcement.
Tantalum diboride also has thermal and electrical conductivity and is used in the chemical industry, metallurgy, building materials, defense industry, agriculture and other departments.
Storage Condition of Tantalum Boride TaB2 Powder:
The damp reunion will affect TaB powder dispersion performance and using effects, therefore, tantalum boride TaB powder should be sealed in vacuum packing and stored in cool and dry room, the tantalum boride TaB powder can not be exposure to air. In addition, the TaB powder should be avoided under stress.
Packing & Shipping of Tantalum Boride TaB2 Powder:
We have many different kinds of packing which depend on the tantalum boride TaB powder quantity.
Tantalum boride TaB powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Tantalum boride TaB powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
CAS number: 12007-35-1
Einecs: 234-496-7
Molecular formula: TaB2
Molecular weight: 191.76
Mol file: 12007-07-7.mol
Density: 14.2 g/cm3
Melting point: 2040 º
Product name: Tantalum boride
Other name: TANTALUM BORIDE;
Einecs 234-496-7;tantalumboride(tab);TANTALUM
About Chromium Diboride CrB2 Powder:Chromium diboride chemical formula is CrB2, which is one of six stable chromium di-boron, melting point 1760 ° C, good antioxidant properties, high-temperature strength. Boron with metals, certain…
About Chromium Diboride CrB2 Powder:
Chromium diboride chemical formula is CrB2, which is one of six stable chromium di-boron, melting point 1760 ° C, good antioxidant properties, high-temperature strength. Boron with metals, certain non-metallic (such as carbon) formation of dual compounds. The usual formula MMBN is usually used, generally a complex compound, and does not follow the pricing rules. In addition to zinc (Zn), cadmium (Cd), mercury (Hg), gallium (Ga), indium (In), β(T1), germanium (Ge), tin (Sn), lead (Pb), bismuth (Bi) Other metals can form boron. They are all crystals with high hardness and melting point, and the chemical properties are stable. The heat concentrated nitric acid cannot dissolve it, which can be directly compounded by the elements, or prepared with an active metal reduction oxide, used as fire, grinding and superconducting material. Feel free to send an inquiry to get the latest price if you would like to buy Chromium Diboride CrB2 Powder in bulk.
Specifications of Chromium Diboride CrB2 powder :
Product name: Chromium diboride
Other name: CRB2;CRB2 K;CHROMIUM BORIDE;Einecs 234-499-3;CHROMIUM DIBORIDE;ChromiumBoride,99%;chromiumboride(crb2);Chromium diboride (crb2); Chromium Boride, -325 Mesh;Chromium diboride,(99.5% Cr)
CAS number: 12007-16-8
CBNumber: CB7197246
EINECS: 234-499-3
Molecular formula: CrB2
Molecular weight: 73.62
Mol file: 12007-16-8.mol
Density: 5.20 g/cm3
Melting point: 2170 ºC
Cr | B | N | Si | Fe | Ni |
80.03% | 18.97% | <0.08% | <0.1% | <0.07% | <0.05% |
How is Chromium Diboride CrB2 Powder produced?
Chromium is heated at a vacuum or an inert atmosphere at 1600 ° C or sintered at 1150 ° C for 48 to 72 h, and boride chromium CrB, Cr2b, Cr3b2, Cr3B4, CrB2, and after hot press at high temperatures, CrB2 can be formed. , CrB or Cr3B4.
Application of Chromium Diboride CrB2 Powder:
Chromium Diboride can be used as a refractory material;
Due to the high melting point of Chromium Diboride, very hard, corrosion resistance is very high;
Chromium Diboride is used as a metallurgical additive;
Chromium diboride as a sputtering target for the production of a film;
Chromium diboride can be a wear-resistant and semiconductor film.
Storage Condition of Chromium Diboride CrB2 powder:
The damp reunion will affect CrB2 powder dispersion performance and using effects, therefore, chromium diboride CrB2 powder should be sealed in vacuum packing and stored in cool and dry room, the chromium diboride CrB2 powder can not be exposure to air. In addition, the CrB2 powder should be avoided under stress.
Packing & Shipping of Chromium Diboride CrB2 powder:
We have many different kinds of packing which depend on the chromium diboride CrB2 powder quantity.
Chromium diboride CrB2 powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Chromium diboride CrB2 powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
Chromium Diboride CrB2 Powder Properties |
Other Names | Chromium boride (CrB2), diboranylidynechromium |
CAS No. | 12007-16-8 |
Compound Formula | CrB2 |
Molecular Weight | 73.618 g/mol |
Appearance | Refractory solid, hexagonal |
Melting Point | 2200 °C |
Solubility in water | N/A |
Density | 5.22 g/cc |
Purity | >99% |
Particle Size | 325 mesh |
Boling point | N/A |
Specific Heat | N/A |
Thermal Conductivity | N/A |
Thermal Expansion | N/A |
Young’s Modulus | N/A |
Exact Mass | 73.9591 g/mol |
Monoisotopic Mass | 73.9589996337891 Da |
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Chromium Diboride CrB2 Powder Health & Safety Information |
Safety Warning | N/A |
Hazard Statements | N/A |
Flashing point | N/A |
Hazard Codes | N/A |
Risk Codes | N/A |
Safety Statements | N/A |
RTECS Number | N/A |
Transport Information | N/A |
WGK Germany | N/A |
About Magnesium Diboride MgB2 Powder:Magnesium diboride is an inorganic compound with the molecular formula MgB2. It is a dark gray, insoluble solid. It is an ionic compound with a hexagonal crystal structure….
About Magnesium Diboride MgB2 Powder:
Magnesium diboride is an inorganic compound with the molecular formula MgB2. It is a dark gray, insoluble solid. It is an ionic compound with a hexagonal crystal structure. It is an intercalated compound with alternating layers of magnesium and boron. This compound is of interest because it is superconducting at 39 K(−234°C).In terms of composition, MgB2 is markedly different from most transition-metal-based cryogenic superconductors.
Magnesium diboride has been known to scientists for nearly 50 years, but no one has ever studied the material’s superconductivity — whether it can conduct electricity perfectly without resistance when cooled to temperatures close to absolute zero. All that changed in January 2001, when Jun Akimitsu of Aoyama Gakuin University in Tokyo announced that he and his team had found that magnesium diboride became superconducting at 39 degrees Kelvin (-389 degrees Fahrenheit), almost twice the temperature of current intermetallic conductors. The announcement sent experimenters around the world scrambling to replicate and confirm the Japanese findings.
Magnesium boride is converted into a superconductor at a temperature slightly close to the absolute temperature of 40K (-233 ° C). Its transition temperature is nearly twice as high as that of other superconductors of the same type, and its actual operating temperature is between 20 and 30K. This temperature can be achieved by liquid neon, liquid hydrogen, or a closed cycle freezer. These methods are simpler and cheaper than the industry’s use of liquid helium to cool niobium alloys (4K). Once doped with carbon or other impurities, magnesium boride is as good at maintaining superconductivity in the presence of a magnetic field or a current as niobium, or better. Feel free to send an inquiry to get the latest price if you would like to buy Magnesium Diboride MgB2 Powder in bulk.
Specifications of Magnesium Diboride MgB2 powder
Magnesium Diboride powder Purity:98.5% or Customized
Magnesium Diboride powder Size:5-15um or Customized
Magnesium Diboride powder Colour:Black
Magnesium Diboride powder CAS No.:12007-25-9
Magnesium Diboride powder EINECS No.:234-501-2
Fe | Mn | Cu | Ca | Ni | Zn | Pb | Sn |
48ppm | 0.1ppm | 0.06ppm | 0.04ppm | 7.4ppm | 0.2ppm | 0.14ppm | 0.4ppm |
Magnesium diboride is an ionic compound, with the hexagonal crystal structure. Magnesium diboride at absolute temperature slightly 40K (equivalent to -233 ℃) will be transformed into a superconductor. And its actual operating temperature is 20 ~ 30K. To reach this temperature, we can use liquid neon, liquid hydrogen or closed-cycle refrigerator to finish cooling. Compared to current industry using liquid helium to cool the niobium alloy (4K), these methods are more simple and economical. Once it is doped with carbon or other impurities, magnesium diboride in a magnetic field, or there is a current passing, the ability to maintain the superconducting is as much as niobium alloys, or even better.
How is Magnesium Diboride MgB2 Powder produced?
The preparation method of MgB2 is mainly the reaction synthesis of magnesium powder and boron powder mixed.
MgB2 was obtained by mixing 99.9% magnesium powder with 99% amorphous boron powder at the ratio of 1:2, pressing it into small balls and adding heat in high-pressure nitrogen.
At present, the commonly used method is to mix amorphous elemental boron powder and magnesium powder according to the stoichiometric ratio (or add excessive magnesium), and then put them into a sealed refractory metal container (such as tantalum), and then put them in a quartz tube for vacuum pumping, and then sintered at 700~950℃ for 1~4 h to synthesize MgB2.
Applications of Magnesium Diboride MgB2 Powder:
Potential applications for Magnesium diboride include superconducting magnets, power transmission lines and sensitive magnetic field detectors.
Magnesium diboride is the attention of new materials, the research mainly focused on the synthesis and superconducting element performance for the industrial synthesis and sintering properties, electrical conductivity at room temperature, the liquid aluminum erosion resistance of fluoride such as corrosive resistance study is less, so far no will MgB2 and its composite materials used in aluminum electrolysis cathodic area coverage.
MgB2 is easier to be sintered and densified than TiB2, and its electrical conductivity basically meets the requirements of aluminum electrolysis cathode. Therefore, MgB2 and its composite materials are likely to be widely used as cathode materials for aluminum electrolysis.
Propellants, Explosives, pyrotechnics: Unlike the element boron, which burns incompletely through glass oxide layers that block oxygen diffusion, magnesium diboride burns completely in oxygen or oxidizer mixtures. Therefore, magnesium boride has been proposed as fuel for ramjet jets. In addition, the use of MgB2 in enhanced explosives and propellants has been proposed for the same reason.
Storage Conditions of Magnesium Diboride MgB2 powder
This product should be sealed and stored in a cool, drying chamber and should avoid exposure to the air in order to prevent moisture reunion which will affect the dispersion properties and result use. Stress should be avoided.
Packing & Shipping of Magnesium Diboride MgB2 powder:
We have many different kinds of packing which depend on the magnesium diboride MgB2 powder quantity.
Magnesium diboride MgB2 powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Magnesium diboride MgB2 powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
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If you are looking for high-quality MgB2 powder, please feel free to contact us and send an inquiry.
Magnesium Boride Properties |
Other Names | magnesium boride powder, MgB2, MgB2 powder,
agnesium diboride |
CAS No. | 12007-25-9 |
Compound Formula | MgB2 |
Molecular Weight | 45.927 |
Appearance | Gray to Black Powder |
Melting Point | 830 °C |
Boiling Point | N/A |
Density | 2.57 g/cm3 |
Solubility in H2O | N/A |
Exact Mass | 46.003653 |
Monoisotopic Mass | 46.003653 |
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Magnesium Boride Health & Safety Information |
Signal Word | N/A |
Hazard Statements | N/A |
Hazard Codes | N/A |
Risk Codes | N/A |
Safety Statements | N/A |
RTECS Number | N/A |
Transport Information | NONH for all modes of transport |
WGK Germany | 3 |
About Tungsten Boride WB2:Tungsten borides are compounds of tungsten and boron. Their most remarkable property is high hardness. The Vickers hardness of WB or WB2 crystals is ~20 GPa and that of WB4…
About Tungsten Boride WB2:
Tungsten borides are compounds of tungsten and boron. Their most remarkable property is high hardness. The Vickers hardness of WB or WB2 crystals is ~20 GPa and that of WB4 is ~30 GPa for loads exceeding 3N.
The relative density of tungsten boride is 10.77 and the melting point is about 2900°C. It does not degrade water and can degrade aqua regia.
It is prepared by heating boron and tungsten powder to a high temperature.
Tungsten boride has comprehensive properties such as high melting point, high hardness and chemical stability. It is only a new superhard material with a high melting point. It is an important military bulletproof material.
For more than 50 years, it has been considered that the rich phase diagram of tungsten alloys, the structure of different phases is also ever-changing.
The highest boride is WB4, which has a three-dimensional grid structure of boron atoms. We put the first the principle calculation is combined with the thermodynamic stability, and the thermodynamic stability and mechanical properties of the possible structure of the tungsten carbide system are systematically studied:
The highest boride to identify tungsten should be WB3 composed of two-dimensional plane boron atoms, not WB4 composed of three-dimensional boron atom grids. It was found that the shear modulus in the borate system of tungsten transformed its formation energy. Increase, revealing that the mechanical properties are closely related to their thermodynamic stability.
Due to the free diffusion coefficient of WB2, the total synthesis of dense tungsten diboride is mostly achieved by sintering technology under high temperature and high-pressure conditions. In this way, it is reduced and the cost is too high; instead, because B will volatilize at high temperature.
Therefore, it is difficult to grasp the content of boron to prepare WB2 bulk materials directly from tungsten powder and boron powder.
It may also generate hypoborate during the sintering process, and compact bulk material with WB2 as the main phase cannot be obtained. Feel free to send an inquiry to get the latest price if you would like to buy Tungsten Boride WB2 powder in bulk.
How is Tungsten Boride WB2 produced?
1. Using metal tungsten and boron as raw materials, fully mix and grind the two, heat and react at above 1400 ℃ to obtain tungsten boride, continue to react to form W2B, and then cool and crush to obtain the product.
2. Tungsten is mixed with stoichiometric boron powder at a molar ratio of W: B=2:1 and sintered in a vacuum or argon atmosphere at 1200 to 1300°C to obtain two tungsten boride.
3. Use the solid phase method. Tungsten boride is prepared from metal tungsten and boron. The reaction formula is as follows. The stoichiometric metal tungsten powder and elemental boron are fully mixed, ground, and molded, and heated and reacted at a temperature above 1400°C to obtain tungsten boride. Continue the reaction to generate W2B, which is cooled and crushed to obtain the product.
Tungsten boride WB2 powder Feature
Tungsten boride powder Molecular formula: WB2
Tungsten boride powder CAS NO:12007-09-9
Tungsten boride powder density:10.77g/cm3
Tungsten boride powder melting point:2900℃
Tungsten boride powder Solubility and Stability
Does not dissolve in water. Dissolved in aqua regia and certain concentrated acid.100 ℃ can be chlorine gas decomposition
Tungsten boride powder Purity: >99%
Tungsten boride powder Particle size: 10-20um
Applications of Tungsten Boride WB2:
Wear-resistant coating for wear parts and semiconductor thin film.
WB series compounds have a high melting point, high hardness, high conductivity, wear resistance, high-temperature resistance and corrosion resistance. They also have comprehensive neutron and gamma-ray shielding properties, so they are widely used in structural materials, wear-resistant materials, and electrodes. Materials and other fields. Tungsten boride is obtained by the direct reaction of metal tungsten and element boron heated by an electric furnace. It has the excellent properties of W-B series compounds and has broad application prospects in the future.
1) Prepare a workpiece with a tungsten boride-rich coating, including a workpiece substrate, and a tungsten layer, a tungsten boride gradient layer, and a tungsten boride coating that are sequentially arranged on the workpiece substrate; In the direction of the thickness of the tungsten layer, the boron content in the tungsten boride gradient layer gradually increases; the unique coating structure can make the bonding strength between the layers high, and the elastic modulus and thermal expansion between the layers The coefficient changes gradually from the substrate to the top film, reducing the overall coating stress to zero and improving the toughness and bonding force of the boride-rich tungsten coating.
2) To prepare a hard material of tungsten diboride, the method first uses a mechanochemical method to synthesize tungsten diboride powder at room temperature with high-purity tungsten (W) powder and boron (B) powder as raw materials, and then in argon Under a protective atmosphere, high-temperature sintering is used to densify the synthesized powder to produce a bulk material of tungsten diboride. This method can obtain compact tungsten diboride bulk material through sintering under normal temperature and pressure conditions. The prepared tungsten diboride bulk material has a series of excellent properties such as certain hardness, good stability and good neutron absorption effect. It has a wide range of applications in corrosion-resistant materials, cutting tools, and new shielding materials.
Storage Condition of Tungsten boride WB2 powder:
The damp reunion will affect WB2 powder dispersion performance and using effects, therefore, tungsten boride WB2 powder should be sealed in vacuum packing and stored in cool and dry room, the tungsten boride WB2 powder can not be exposure to air. In addition, the WB2 powder should be avoided under stress.
Packing & Shipping of tungsten boride WB2 powder:
We have many different kinds of packing which depend on the tungsten boride WB2 powder quantity.
Tungsten boride WB2 powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Tungsten boride WB2 powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
Tungsten Diboride Properties |
Other Names | tungsten boride, WB2 powder, tungsten boride WB2 |
CAS No. | 12007-09-9 |
Compound Formula | WB2 |
Molecular Weight | 205.5 |
Appearance | Gray Black Powder |
Melting Point | 2365 °C |
Boiling Point | N/A |
Density | N/A |
Solubility in H2O | N/A |
Vickers Hardness | 20 GPa |
Exact Mass | 205.969544 g/mol |
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Tungsten Diboride Health & Safety Information |
Signal Word | N/A |
Hazard Statements | N/A |
Hazard Codes | N/A |
Risk Codes | N/A |
Safety Statements | N/A |
Transport Information | N/A |
B4C powder MF: B4CB4C powder CAS No: 12069-32-8B4C powder EINECS No: 235-111-5B4C powder Appearance: Grey black powderB4C powder Particle size: Can be customized according to your requirements. About Boron Carbide B4C Boride Powder:Boron carbide formula is b4c, boron carbide properties is low density, high strength, high temperature stability and…
B4C powder MF: B4C
B4C powder CAS No: 12069-32-8
B4C powder EINECS No: 235-111-5
B4C powder Appearance: Grey black powder
B4C powder Particle size: Can be customized according to your requirements.
About Boron Carbide B4C Boride Powder:
Boron carbide formula is b4c, boron carbide properties is low density, high strength, high temperature stability and good chemical stability. Therefore,boron carbide is widely used in wear-resistant materials, ceramic reinforcing phases, especially in lightweight armor, reactor neutron absorbers, etc. In addition, compared with diamond and cubic boron nitride, boron carbide is easy to manufacture and low cost, so it is more widely used. It can replace expensive diamonds in some places and is commonly used in grinding, grinding, drilling and other aspects. If you want to buy boron carbide, please send inquiry to sales1@rboschco.com
Our company also can supply boron carbide rod, boron carbide sheet.
B4C powder possesses high purity, small particle size distribution, high specific surface area; B4C powder is a synthetic ultra rigid materials, the hardness is 9.46; 56-6200Kg/mm2 microhardness, proportion was 252 g/cm3, melting is 2,250 degrees Celsius.
Chemical properties, non-magnetic, resistant to high and low temperatures, strong acids and alkalis. In addition, boron carbide can effectively absorb neutrons without emitting gamma rays that are harmful to the human body, and it will not form secondary radiation pollution. Feel free to send an inquiry to get the latest price if you would like to buy Boron Carbide B4C Boride Powder in bulk. The hardness is only less than the diamond. Boron carbide is one of the most stable substances to acid, and it is stable in all concentrated or dilutes acid or alkali aqueous solutions. Boron carbide is basically stable below 800°C in an air environment. The boron oxide formed by its oxidation at a higher temperature is lost in the gas phase, leading to its instability and oxidation to form carbon dioxide and boron trioxide.
How is Boron Carbide B4C Boride Powder produced?
Boron Carbide B4C Boride Powder is produced by reducing boron oxide with carbon at high temperatures in an electric furnace. After grinding, the black powder is solidified by pressing at temperatures exceeding 2,000°C (3,630°F). melting point of boron carbide is approximately 2,350°C (4,260°F).
Specifications of Boron Carbide B4C powder
Item | Purity | APS | SSA | Color | Morphology | Zeta Potential | Bulk Density |
B4C powder | >99% | 50nm | 42m2/g | Black | hexagonal | -26mV | 0.1g /cm3 |
Other size of Boron Carbide B4C powder: 500nm
Applications of Boron Carbide B4C Boride Powder:
Fine and advanced abrasive materials
Because of the high grinding efficiency of boron carbide, it is mainly used as a grinding medium in the grinding process of materials, such as: grinding, grinding, drilling and polishing of hard materials such as gems, ceramics, knives, bearings, and cemented carbides.
Industrial ceramic materials
Products made of boron carbide powder: sandblasting nozzles, sealing rings, nozzles, bearings, plungers of mud pumps, pestles and rocket launchers, ceramic coatings for warships, helicopters, etc., as a new type of material. It has the characteristics of high melting point, high hardness, high elastic modulus, strong wear resistance, and good self-lubricating properties and is widely used in sandblasting machinery, electronics, information, aerospace, automobile and other industries.
Shielding and control materials for the nuclear industry
Boron carbide powder material has a large thermal neutron capture section, excellent neutron absorption and radiation resistance, and is internationally recognized and recommended as a nuclear reactor control material and shielding material.
Bulletproof armor
Due to its high strength and small specific gravity, it is especially suitable for use in lightweight bulletproof armor, such as the protection of aircraft, vehicles, ships and human bodies.
Improve the life of mechanical parts
Combine boron carbide powder with metal to produce metal-based alloy powder. After special surface treatment of this material, the original mechanical parts are more resistant to wear and corrosion resistance to acid and alkali.
Special absorber provides energy
Boron carbide, also known as “black gold”, is used as a power source in powder form as a solid fuel for the rocket.
Chemical industry additives
Due to its stable chemical properties, boron carbide does not react with acid and alkali solutions and has a high chemical potential, so it is widely used in the production of other boron-containing materials, such as zirconium boride and titanium boride.
Advanced refractories
Because of its anti-oxidation and high-temperature resistance, boron carbide is used as a high-grade shaped and unshaped refractory material and is widely used in various fields of metallurgy, such as steel stoves and kiln furniture.
Storage Condition of Boron Carbide B4C powder:
Damp reunion will affect boron carbide ceramics dispersion performance and using effects, therefore, boron carbide B4C powder should be sealed in vacuum packing and stored in cool and dry room, the boron carbide B4C powder can not be exposure to air. In addition, the boron carbide B4C powder should be avoided under stress.
Packing & Shipping of Boron Carbide B4C powder:
We have many different kinds of packing which depend on the boron carbide B4C powder quantity.
Boron carbide B4C powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Boron carbide B4C powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
Boron Carbide Properties |
Other Names | B4C, B4C powder, black diamond, boron carbide powder,
boron-carbon refractory ceramic |
CAS No. | 12069-32-8 |
Compound Formula | B4C |
Molecular Weight | 55.26 |
Appearance | Gray to Black Powder |
Melting Point | 2763 °C |
Boiling Point | 3500 °C |
Density | 2.52 g/cm3 |
Solubility in H2O | Insoluble |
Electrical Resistivity | 0 to 11 10x Ω-m |
Poisson’s Ratio | 0.17-0.18 |
Tensile Strength | 350 MPa (Ultimate) |
Thermal Conductivity | 31 to 90 W/m-K |
Thermal Expansion | 4.5 to 5.6 µm/m-K |
Vickers Hardness | 26 Mpa |
Young’s Modulus | 240 to 460 Gpa |
Exact Mass | 56.037222 |
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Boron Carbide Health & Safety Information |
Signal Word | Warning |
Hazard Statements | H332 |
Hazard Codes | Xi |
Risk Codes | 20 |
Safety Statements | 22-39 |
RTECS Number | N/A |
Transport Information | N/A |
WGK Germany | 3 |
About Calcium Hexaboride CaB6 Powder:Calcium hexaboride (calcium boride) is a compound of calcium and boron, with the chemical formula CaB6. Due to its high conductivity, hardness, chemical stability and melting point, it is…
About Calcium Hexaboride CaB6 Powder:
Calcium hexaboride (calcium boride) is a compound of calcium and boron, with the chemical formula CaB6. Due to its high conductivity, hardness, chemical stability and melting point, it is an important material. It is a black, shiny, chemically inert powder with low density. It has a typical cubic structure of six metal boride, with octahedral units of six boron atoms and calcium atoms.
CaB6 has been investigated in the past due to a variety of peculiar physical properties, such as superconductivity, valence fluctuation and Kondo effects. However, the most remarkable property of calcium boride is its ferromagnetism. It occurs at unexpectedly high temperatures (600K) and with a low magnetic moment. The origin of this high-temperature ferromagnetism is the ferromagnetic phase of the dilute electron gas, linkage to the presumed excitonic state in calcium boride, or external impurities on the surface of the sample. The impurities might include iron and nickel, probably coming from impurities in the boron used to prepare the sample.
CaB6 is insoluble in H2O, MeOH (methanol), and EtOH (ethanol) and dissolves slowly in acids. Its microhardness is 27 GPa, Knoop hardness is 2600 kg/mm2), the Young modulus is 379 GPa, and electrical resistivity is greater than 2·1010 Ω·m for pure crystals. CaB6 is a semiconductor with an energy gap estimated at 1.0 eV. The low, semi-metallic conductivity of many CaB6 samples can be explained by unintentional doping due to impurities and possible non-stoichiometry. Feel free to send an inquiry to get the latest price if you would like to buy Calcium Hexaboride CaB6 Powder in bulk.
Product Performance of Calcium Hexaboride CaB6 Powder:
Calcium boride has the characteristics of high melting point and high hardness. Its physical and chemical properties are quite stable. When calcined in air, sub-micron CaB6 will only gain weight after 800 degrees Celsius and is not easy to oxidize. CaB6 is generally insoluble in hydrochloric acid and sulfuric acid, so technically to remove impurity materials by hot hydrochloric acid, but CaB6 is soluble in nitric acid.
How is Calcium Hexaboride CaB6 Powder produced?
One of the main reactions of industrial production is:
CaO + 3 B2O3 + 10 Mg→CaB6 + 10 MgO
Other methods of producing CaB6 powder include:
Calcium or calcium oxide reacts directly with boron at 1000°C;
Ca + 6B→CaB6
Ca(OH)2 reacts with boron under a vacuum of about 1700°C (carbothermal reduction);
Ca(OH)2 + 7B→CaB6 + BO(g)+ H2O(g)
The reaction of calcium carbonate and boron carbide under vacuum above 1400°C (Carbothermal reduction)
CaO and H3BO3 react with Mg to 1100°C.
Low temperature (500°C) synthesis
CaCl2 + 6NaBH4→CaB6 + 2NaCl + 12H2 + 4Na
As a result, the material quality is relatively poor.
In order to produce, for example, pure calcium boride single crystals used as cathode materials, the CaB6 powder thus obtained is further recrystallized and purified by zone melting technology. The typical growth rate is 30 cm/h, and the crystal size is about 1×10 cm.
Single crystal CaB6 nanowires (diameter 15-40 nm, length 1-10 microns) can be obtained by pyrolyzing diborane (B2H6) on calcium oxide (CaO) powder at 860-900°C in the presence of Ni catalyst.
Technical Parameter of Calcium Hexaboride CaB6 Powder:
Product Name | MF | Purity | Particle Size | Bulk Density | Melting Point | Color |
Calcium Hexaboride | CaB6 | 99.5% | -325 mesh | 2.33 g/cm3 | 2230℃ | Gray Black |
Application of Calcium Hexaboride CaB6 Powder:
1. Used as a boron-containing additive for dolomite charcoal and magnesium dolomite charcoal refractories to resist oxidation, erosion and improve the thermal strength.
2. Used as a deoxidizing and degassing agent for highly conductive red copper to improve conductivity and strength.
3. Used as a new type of material for preventing neutrons in the nuclear industry.
4. Used as a new type of semiconductor material in spin electronic components with a temperature of 900K.
5. Used as a raw material for manufacturing boron trichloride (BCl3) and amorphous boron.
6. Used as a raw material for manufacturing high-purity metal borides (TiB2, ZrB2, HfB2, etc.) and high-purity boron alloys (Ni-B, Co-B, Cu-B, etc.).
7. Used to manufacture a mixture of catalyst-containing calcium-boron nitride (Ca3B2N4) and hexagonal boron nitride, and to produce crystal cubic boron nitride with excellent performance.
Storage Condition of Calcium Hexaboride CaB6 Powder:
Damp reunion will affect CaB6 powder dispersion performance and using effects, therefore, calcium hexaboride CaB6 powder should be sealed in vacuum packing and stored in cool and dry room, the calcium hexaboride can not be exposure to air. In addition, the CaB6 powder should be avoided under stress.
Packing & Shipping of Calcium Hexaboride CaB6 Powder:
We have many different kinds of packing which depends on the calcium hexaboride CaB6 powder quantity.
Calcium hexaboride CaB6 powder packing: vacuum packing, 1kg/bag, 25kg/barrel, or as your request.
Calcium hexaboride CaB6 powder shipping: could be shipped out by sea , by air, by express as soon as possible once payment receipt.
Calcium Hexaboride Properties |
Other Names | zirconium boride, ZrB2 powder |
CAS No. | 12007-99-7 |
Compound Formula | CaB6 |
Molecular Weight | 104.944 |
Appearance | Black Powder |
Melting Point | 2235 °C |
Boiling Point | N/A |
Density | 2.3-2.45 g/cm3 |
Solubility in H2O | Insoluble |
Exact Mass | N/A |
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Calcium Hexaboride Health & Safety Information |
Signal Word | Warning |
Hazard Statements | H315-H319-H335 |
Hazard Codes | Xi |
Risk Codes | N/A |
Safety Statements | N/A |
Transport Information | NONH for all modes of transport |
About Zirconium Diboride ZrB2 Powder:Zirconium boride powder is a chemical substance and its molecular formula is ZrB2. Nature gray hard crystals. Zirconium boride has three components: zirconium monoboride, zirconium diboride, and zirconium tribromide….
About Zirconium Diboride ZrB2 Powder:
Zirconium boride powder is a chemical substance and its molecular formula is ZrB2. Nature gray hard crystals. Zirconium boride has three components: zirconium monoboride, zirconium diboride, and zirconium tribromide. Only zirconium diboride is stable in a wide temperature range. Industrial production is mainly based on zirconium diboride. Zirconium diboride is a hexagonal crystal, gray crystal or powder, with a relative density of 5.8 and a melting point of 3040°C. High-temperature resistance, high strength at room temperature and high temperature. Good thermal shock resistance, low resistance, anti-oxidation at high temperature. The melting point is about 3000°C. With metallic luster.
Zirconium diboride powder(ZrB2) is a highly covalent refractory ceramic material with a hexagonal crystal structure. ZrB2 is an ultra-high temperature ceramic (UHTC) with a melting point of 3246°C. Coupled with a lower density of ~6.09 g/cm3 (the measured density may be higher due to ha impurities) and good high-temperature strength, it is suitable for high-temperature aerospace applications, such as hypersonic flight or rocket propulsion systems, for example, Furnace components, high-temperature electrodes, rocket engines, thermal protection structures for spacecraft with temperature capabilities exceeding 1800°C, and heavy-wear applications.
It is an unusual ceramic with relatively high thermal and electrical conductivity and has the same characteristics as the titanium diboride and diboride shares of the same structure. In addition to its fire resistance, good thermal conductivity (>50 W/m/K), inertness to molten metal, good thermal shock resistance, and high electrical conductivity (~105 S/cm), ZrB2 can also pass EDM basic ceramic molding.
ZrB2 parts are usually hot-pressed (applying pressure to the heated powder) and then machined to form. The covalent nature of the material and the presence of surface oxides hinder the sintering of ZrB2. The presence of surface oxides will increase the coarsening of crystal grains before densification during the sintering process. Pressureless sintering of ZrB2 is possible. Sintering additives such as boron carbide and carbon will react with surface oxides, thereby increasing the driving force for sintering, but the mechanical properties will decrease compared to hot-pressed ZrB2. Feel free to send an inquiry to get the latest price if you would like to buy Zirconium Diboride ZrB2 Powder in bulk.
Properties of Zirconium Diboride ZrB2 powder CAS 12045-64-6:
Molecular formula: ZrB2
Molar mass: 112.85 g/mol
Appearance: grey-black powder
Density: 6.085 g/cm3
Melting point: 3246 °C
Solubility in water: Insoluble
Crystal structure: Hexagonal, hP3
Space group: P6/mmm, No. 191
Features of Zirconium Diboride ZrB2 powder:
TiB2, ZrB2, HfB2, VB2, NbB, NbB2, TaB, TaB2, CrB2, Mo2B5, W2B5, Fe2B, FeB, CoB, Co2B, NiB, Ni2B, Ni2B, LaB6, UB4, UB2.
Zirconium diboride (ZrB2) is a highly covalent refractory ceramic material with a hexagonal crystal structure. ZrB2 is an ultra high temperature ceramic (UHTC) with a melting point of 3246 °C. This along with its relatively low density of ~6.09 g/cm3 (measured density may be higher due to hafnium impurities) and good high temperature strength makes it a candidate for high temperature aerospace applications such as hypersonic flight or rocket propulsion systems. It is an unusual ceramic, having relatively high thermal and electrical conductivities, properties it shares with isostructural titanium diboride and hafnium diboride.
How is Zirconium Diboride ZrB2 Powder produced?
ZrO2 and HfO2 are reduced to their respective diboron silanes by metal thermal reduction. Use cheap precursor materials and react according to the following reactions:
ZrO 2 + B 2 O 3 + 5Mg→ZrB 2 + 5MgO
The precursor materials for this reaction (ZrO 2 / TiO 2 / HfO 2 and B 4 C) are cheaper than those required for stoichiometric and boron thermal reactions. Prepare ZrB2 at a temperature higher than 1600°C for at least 1 hour through the following reaction:
2ZrO 2 + B 4 C + 3C→2ZrB 2 + 4CO
This method requires a slight excess of boron because some boron is oxidized during the boron carbide reduction process. It is also observed that ZrC is the product of the reaction, but if the reaction is carried out under an excess of 20-25% of B4C, the ZrC phase disappears and only ZrB2 remains. The lowest synthesis temperature (~1600°C) will produce UHTC with finer dimensions and better sinterability. Before boron carbide reduction, the boron carbide must be ground to promote the oxide reduction and diffusion process.
ZrO2 and HfO2 can be dispersed on the boron carbide polymer precursor before the reaction. in. Heating the reaction mixture to 1500°C results in the formation of boron carbide and carbon in situ, and the subsequent reduction of ZrO2 to ZrB2.
The gas phase is used to reduce the vapors of zirconium tetrachloride and boron trichloride when the substrate temperature is higher than 800°C. Recently, alternative ZrB2 films can also be prepared by physical vapor deposition.
Applications of Zirconium Diboride ZrB2 Powder:
Zirconium boride has high hardness, high thermal conductivity, good oxidation resistance and good corrosion resistance. Zirconium diboride is used in special ceramic refractory industries, nuclear industry, aerospace industry and military industries. Zirconium diboride can be used as a surface coating for rolling balls and smooth solid materials.
Carbon fiber reinforced zirconium diboride composites exhibit high density, while silicon carbide fiber-reinforced zirconium diboride composites are brittle and show catastrophic damage.
Zirconium diboride (ZrB2) can be used as thin-film electronic components for sensors, actuators and micro-systems operating in high-temperature environments because it has metal-like conductivity and has a melting temperature of 3245°C.
Other applications of Zirconium Diboride ZrB2 Powder:
(1) zirconium diboride powder is used to produce materials for ceramics.
(2) zirconium diboride powder can be used as a neutron absorber.
(3) zirconium diboride powder can be used as an abrasion-resistant coating.
(4) zirconium diboride powder can be used as crucible lining and anticorrosive chemical equipment.
(5) zirconium diboride powder can be used as anti-oxidation compound material.
(6) zirconium diboride powder can be used as a refractory material, especially in the status of anticorrosion of molten metals.
(7) zirconium diboride powder can be used as a thermally enhanced additive.
(8) zirconium diboride powder can be used for high-temperature resistance.
(9) zirconium diboride powder can be used as a special type of dope against high temperature, corrosion and oxidation.
Storage Condition of Zirconium Diboride ZrB2 Powder:
Damp reunion will affect ZrB2 powder dispersion performance and using effects, therefore, zirconium diboride ZrB2 powder should be sealed in vacuum packing and stored in cool and dry room, the zirconium diboride ZrB2 powder can not be exposure to air. In addition, the ZrB2 powder should be avoided under stress.
Packing & Shipping of Zirconium Diboride ZrB2 Powder:
We have many different kinds of packing which depends on the zirconium diboride ZrB2 powder quantity.
Zirconium diboride ZrB2 powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Zirconium diboride ZrB2 powder shipping:could be shipped out by sea , by air, by express?as soon as possible once payment receipt.
Zirconium Diboride Properties |
Other Names | zirconium boride, ZrB2 powder |
CAS No. | 12045-64-6 |
Compound Formula | ZrB2 |
Molecular Weight | 112.8 |
Appearance | Gray to Black Powder |
Melting Point | 3246 °C |
Boiling Point | N/A |
Density | 6.09 g/cm3 |
Solubility in H2O | N/A |
Exact Mass | 111.923315 g/mol |
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Zirconium Diboride Health & Safety Information |
Signal Word | Warning |
Hazard Statements | H228 |
Hazard Codes | F |
Risk Codes | N/A |
Safety Statements | N/A |
Transport Information | UN3178 4.1/PG III |