About Nickel Oxide NiO :Nickel oxide is an inorganic substance with a chemical formula of NiO and a molecular weight of 74.71. What is NiO in chemistry? Nickel(II) oxide is the chemical compound with the…
About Nickel Oxide NiO :
Nickel oxide is an inorganic substance with a chemical formula of NiO and a molecular weight of 74.71.
What is NiO in chemistry?
Nickel(II) oxide is the chemical compound with the formula NiO. It is the principal oxide of nickel. Nickel(II) oxide is classified as a basic metal oxide. Several million kilograms are produced annually of varying quality, mainly as an intermediate in the production of nickel alloys. It is a green-black cubic crystal. It is soluble in acid and ammonia but insoluble in water. Is nickel oxide soluble? Nickel oxide is soluble in acids, potassium cyanide, and ammonium hydroxide. It is insoluble in both cold and hot water, and caustic solutions. The color turns yellow when heated. It is obtained by the action of nickel and oxygen at a temperature greater than 400°C, or by pyrolysis of nickel carbonate at 350°C. Used to make alloys, batteries, glass, enamel, ceramics, electronic components, nickel salts, and catalysts.
Main properties of Nickel oxide
|Names||Nickel(II) oxide, Nickel monoxide, Oxonickel, NiO|
|Molecular Weight||74.69 g/mol|
|Melting Point||1955 °C (3551 °F)|
|Solubility in water||N/A|
What is the charge of NiO?
0 is the charge of NiO.
Nickel oxide is the main oxide of nickel. It is classified as an alkali metal oxide. Millions of kilograms of products with different qualities are produced every year, mainly as intermediates for nickel alloy production. The mineral form of NiO (arsenite) is very rare. The protection of other nickel(III) oxides, such as Ni2O3 and NiO2 is also claimed but has not been proven by X-ray crystallography.
Tqhp is a trusted global Nickel Oxide NiO supplier. Feel free to send an inquiry about the latest Nickel Oxide price at any time. NiO adopts NaCl structure with octahedral Ni2+ and O2-positions. Conceptually simple structures are often called rock salt structures. Like many other binary metal oxides, NiO is usually not stoichiometric, which means that the Ni:O ratio deviates from 1:1. In nickel oxide, this non-stoichiometric NiO is accompanied by a color change. The stoichiometric correct NiO is green, and the non-stoichiometric NiO is black.
Performance of Nickel Oxide NiO Powder :
Nickel oxide is obtained by the action of nickel and oxygen at greater than 400℃, or by pyrolysis of nickel carbonate at 350℃. Used for making alloys, batteries, glass, enamel, ceramics, electronic components, nickel salts, and as a catalyst.
How is Nickel Oxide NiO produced?
NiO can be prepared by various methods. When heated to above 400°C, nickel powder reacts with oxygen to form NiO. In some commercial processes, green nickel oxide is made by heating a mixture of nickel powder and water at 1000°C. The reaction rate can be increased by adding NiO.
The simplest and most successful preparation method is to pyrolyze nickel (II) compounds (such as hydroxides, nitrates and carbonates) to produce a light green powder. By heating the metal in oxygen, the synthesis of the elements can produce gray to black powder, which indicates that the stoichiometry is wrong. It combines with sodium and potassium oxides at high temperatures (> 700°C) to form corresponding nickelates.
In addition, nickel oxide nanoparticles can be produced by thermally decomposing newly prepared nickel hydroxide through a sol-gel route at 300°C (572°F). X-ray diffractometer and vibrating sample magnetometer can be used to characterize the nickel oxide nanoparticles produced by this method.
Technical Parameter of Nickel Oxide NiO Powder :
|Ni||Co||Cu||Fe||Zn||S||Ca+Mg+Na||insoluble in HCl|
Application of Nickel Oxide NiO Powder :
NiO has a variety of professional applications. Usually, it is used to distinguish between “chemical grade” and “metallurgical grade”. “Chemical grade” is a relatively pure material used for special applications, while “metallurgical grade” is mainly used to produce alloys. Used in the ceramic industry to manufacture glass powder, ferrite, and enamel. The sintered oxide is used to produce nickel steel alloys. Charles Edouard Guillaume (CharlesÉdouard Guillaume) won the 1920 Nobel Prize in Physics for his research on nickel-steel alloys, which he called Invar and Invar.
What is nickel oxide used for?
Nickel oxide has a range of applications such as: For making electrical ceramics such as thermistors and varistors e.g. ferrites (nickel-zinc ferrite) Pigments for ceramic, glasses, and glazes.
NiO is a commonly used hole transport material in thin-film solar cells. It is also a component of nickel-iron batteries (also known as Edison batteries) and a component of fuel cells. It is the precursor of many nickel salts, used as specialty chemicals and catalysts. Recently, until the development of environmentally friendly NiMH batteries, NiO was used to manufacture NiCd rechargeable batteries used in many electronic devices.
Is nickel oxide toxic?
CLINICAL FEATURES: ACUTE EXPOSURE Although nickel oxide is a pulmonary irritant, acute exposure is unlikely to result in significant poisoning. Documented clinical cases invariably involve chronic occupational inhalation.
NiO is an anode electrochromic material and has been extensively studied as a counter electrode of tungsten oxide and cathode electrochromic material in complementary electrochromic devices.
NiO is used as a binder and colorant for enamel in the pusher industry.
The ceramic industry is used as a raw material for colorants.
Used as a raw material for nickel-zinc ferrite in the production of magnetic materials.
Colorant for stained glass and tubular glass bulbs in the glass industry.
It is also a material used to manufacture nickel salts, nickel catalysts and secondary batteries.
Nickel oxide can react with acids to form salts and other compounds, such as nickel oxide. Nickel sulfamate for electroplating and nickel molybdate for hydrodesulfurization catalyst
Gold-doped nickel oxide films can be used as transparent electrodes in optoelectronic devices.
Storage Condition of Nickel Oxide NiO Powder :
Nickel Oxide NiO Powder should be stored in a cool, ventilated warehouse. Keep away from fire and heat. It should be stored separately from acids and edible chemicals. Please avoid mixing, and the storage area should be equipped with suitable materials to contain the leakage.
Packing & Shipping of Nickel Oxide NiO Powder :
It is packed in double plastic bags inside, which can be filled with argon in a vacuum; it can be vacuumed and filled with argon for protection..
Nickel Oxide NiO Powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Nickel Oxide NiO Powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.
Green Nickel Oxide NiO Powder Properties
|Other Names||Nickel(II) oxide,Nickel monoxide, Oxonickel, NiO|
|Molecular Weight||74.69 g/mol|
|Melting Point||1955 °C (3551 °F)|
|Solubility in water||N/A|
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Green Nickel Oxide NiO Powder Health & Safety Information
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|
|Melting Point||2235 °C|
|Solubility in H2O||Insoluble|
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Calcium Hexaboride Health & Safety Information
|Transport Information||NONH for all modes of transport|
About Titanium Carbonitride TiCN Powder:Titanium Carbonitride has many other uses besides being used as abrasive due to its stable chemical properties, high thermal conductivity, low thermal expansion coefficient and good wear resistance….
About Titanium Carbonitride TiCN Powder:
Titanium Carbonitride has many other uses besides being used as abrasive due to its stable chemical properties, high thermal conductivity, low thermal expansion coefficient and good wear resistance. Titanium Carbonitride has a very high hardness, with a Mohs hardness of 9.5, second only to the world’s harder diamond (grade 10). It has excellent thermal conductivity and is a semiconductor that can resist oxidation at high temperatures.
Titanium Carbonitride (TiCN) is a thin film coating developed from titanium nitride. TiCN has a slightly higher hardness than TiN and has a slightly lower coefficient of friction in many applications. It is mainly used to improve abrasive wear resistance. The use temperature limit of TiCN is relatively low.
TiCN has a lower coefficient of friction and higher hardness than TiN. Tools plated with Titanium Carbonitride are more suitable for cutting hard materials such as stainless steel, titanium alloys and nickel alloys, and have more wear resistance and high-temperature stability, which can be significantly improved Tool life. TiCN is a dark gray powder. It has low internal stress, high toughness, good lubricity, high hardness, wear-resistance and other characteristics, suitable for occasions requiring low friction coefficient and high hardness.
Titanium Carbonitride has at least 70 crystalline forms. α-Titanium Carbonitride is a more common isomorphous crystal that is formed at a high temperature higher than 2000 degrees Celsius and has a hexagonal crystal structure (like wurtzite). β-Titanium Carbonitride, a cubic crystal structure, similar to diamond, is formed below 2000 degrees Celsius. Although in the application of heterogeneous catalyst support, it is eye-catching because of its higher unit surface area than the α type. Another type of Titanium Carbonitride, μ-Titanium Carbonitride is very stable and has a more pleasant sound when colliding. Feel free to send an inquiry to get the latest price if you would like to buy Titanium Carbonitride TiCN Powder in bulk.
Product Performance of Titanium Carbonitride TiCN Powder :
Titanium carbonitride is a non-oxide ceramic material with excellent performance and wide application. It has the advantages of TiC and TiN. It has high melting point, high hardness, good corrosion resistance and oxidation resistance, and good thermal conductivity. Sex, conductivity and chemical stability for many fields such as machinery, chemicals, automotive and aerospace.
Technical Parameter of Titanium Carbonitride TiCN Powder :
How is Titanium Carbonitride TiCN Powder produced?
In the physical vapor deposition (PVD) process, TiCN applies the transverse rotating cathode technology. The substance evaporates from the solid source in the form of atoms/molecules and then is transported in the form of vapor through a vacuum, low-pressure gas/plasma to the substrate, where it condenses. The application temperature of TiCN is 450°C.
Application of Titanium Carbonitride TiCN Powder:
Titanium Carbonitride can be divided into αTitanium Carbonitride and βTitanium Carbonitride. The αTitanium Carbonitride abrasive has two color varieties, green Titanium Carbonitride, black and green varieties. β-Titanium Carbonitride is the preparation of the main category of Titanium Carbonitride ceramic materials. The toughness of black Titanium Carbonitride is higher than that of green Titanium Carbonitride. It is mainly used to process materials with low tensile strength, such as glass, ceramics, stone, refractory materials, cast iron, and non-ferrous metals. Green Titanium Carbonitride has good self-sharpening and is mainly used for processing cemented carbide, titanium alloy and optical glass.
In addition to being used as an abrasive, Titanium Carbonitride has many other uses. A special process is used to coat Titanium Carbonitride powder on the inner wall of the turbine impeller or cylinder block, which can improve its wear resistance and prolong its service life by 1 to 2 times; The finished refractory materials, black Titanium Carbonitride and green are heat-resistant, light in weight and high in strength, and have good energy-saving effects.
Titanium Carbonitride (TiCN) has the highest lubricity in all tin coatings, which makes it an excellent dry film lubricant, which is better than standard calico tin when it needs to improve the hardness and wear resistance. Great. TiCN is commonly used for steel, hardened steel and stainless steel materials. TiCN is an excellent coating suitable for bronze, brass and plastics, so it is a good choice for stamping, punching and forming. Can be stripped and recoated.
Storage Condition of Titanium Carbonitride TiCN Powder:
Titanium Carbonitride TiCN Powder dispersion performance and using effects, therefore, titanium tin carbide Ti2SnC powder should be sealed in vacuum packing and stored in cool and dry room, the titanium tin carbide can not be exposure to air. In addition, the Ti2SnC powder should be avoided under stress.
Packing & Shipping of Titanium Carbonitride TiCN Powder:
We have many different kinds of packing which depend on the titanium tin carbide Ti2SnC powder quantity.
Titanium Carbonitride TiCN Powder powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Titanium Carbonitride TiCN Powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.
Titanium Carbonitride TiCN Powder Properties
|Other Names||TiCN, Titanium carbide-nitride, titanium carbo-nitride, titanium carbo nitride,|
TiC-TiN, TiCN, Ti(C,N) 70/30, 50/50, Grade A B C D, TiC1-xNx,
CAS 12627-33-7 (Titanium cyanonitride, TiCN2)
|Appearance||Dark gray powder|
|Solubility in water||N/A|
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Titanium Carbonitride TiCN Powder Health & Safety Information
|Transport Information||UN3178 4.1/PG III|
About Tungsten Disulfide WS2:Tungsten disulfide is an inorganic compound composed of tungsten and sulfur, with the chemical formula WS2. This compound is part of a group of materials called transition metal dihalides. It…
About Tungsten Disulfide WS2:
Tungsten disulfide is an inorganic compound composed of tungsten and sulfur, with the chemical formula WS2. This compound is part of a group of materials called transition metal dihalides. It naturally appears as a rare tungsten ore. This material is part of certain catalysts used for hydrodesulfurization and hydrodenitrogenation.
WS2 uses a layered structure similar to MoS2 or the same type of MoS2, instead of a coordination sphere with W atoms (instead of molybdenum atoms) in a triangular prism. Due to this layered structure, WS2 formed inorganic nanotubes, which were discovered after heating a thin sample of WS2 in 1992.
Most of the WS2 forms dark gray hexagonal crystals with a layered structure. Like the closely related MoS2, it has the characteristics of a dry lubricant.
Although people have long believed that WS2 is relatively stable in ambient air, recent reports on single-layer WS2 oxidation in the environment have found that this is not the case. WS2 is converted to tungsten oxide in a single layer form by a photooxidation reaction fairly quickly (within a few days in ambient light and atmosphere). The oxidation process includes visible wavelength light easily absorbed by the single-layer WS2 (
WS2 is also attacked by a mixture of nitric acid and hydrofluoric acid. When heated in an oxygen-containing atmosphere, WS2 is converted to tungsten trioxide. When heated in the absence of oxygen, WS2 will not melt but will decompose into tungsten and sulfur, but the decomposition temperature is only 1250°C.
Historically, the separation of monolayer WS2 used a chemical exfoliation method, that is, inserting lithium from n-butyl lithium (in hexane), and then stripping the inserted Li compound by ultrasonic treatment in water. WS2 is also shed by treatment with various reagents such as chlorosulfonic acid and lithium halide. Feel free to send an inquiry to get the latest price if you would like to buy tungsten disulfide WS2 powder in bulk.
Tungsten Disulfide details:
Tungsten Disulfide particle size: FSSS=0.4 to 0.7 μm, FSSS=0.85 to 1.15μm. 80nm
Tungsten Disulfide purity: 99.9%
How is Tungsten Disulfide WS2 produced?
1. Roasting decomposition method:
Tungstic acid reacts with ammonia water under stirring at 57-60°C for 3 hours, and the heat preservation naturally settles for more than 16 hours. The generated ammonium tungstate reacts with hydrogen sulfide gas to generate ammonium tetrathiotungstate after high-temperature roasting and decomposition into tungsten disulfide.
2. Tungsten reacts very slowly with liquid sulfur. WS2 can be formed by passing sulfur vapor to red hot tungsten. Tungsten is mixed with stoichiometric sulfur bloom and reacted in a nitrogen atmosphere at 800°C for 24 hours to form WS2, such as reacting at 6MPa and 1800°C to form orthorhombic WS2.
3. Using ammonium tetrathiotungstate as the raw material, heating and decomposing the ammonium tetrathiotungstate under the condition of isolating the air, the temperature rises from room temperature to 700-1200℃ with a temperature gradient of 100-200℃/hour during heating. After being kept at this temperature for 24 to 48 hours, it is then reduced to room temperature with a temperature gradient of 30 to 110°C/hour, and the material is discharged and crushed.
The preparation method of ultrafine scaly crystal tungsten disulfide used for lubricants has simple process equipment, does not pollute the environment, and is safe and reliable in operation, and can produce tungsten disulfide with stable quality, high purity, and ultrafine crystal structure of hexagonal crystal system.
Applications of Tungsten Disulfide WS2:
Tungsten disulfide (WS2) or tungsten disulfide is a very smooth dry film friction coating. The friction coefficient of WS2 is extremely low, 0.03, which is lower than PTFE, graphite or molybdenum disulfide (MoS2). Compared with many other WS2, it has unparalleled performance in terms of lubricity, non-stick, low friction, wears life and rated size. It has a wide range of applications in transistors, sensors, photocatalysis, electronic equipment, etc. Tungsten disulfide powder has good solubility in water and ethanol.
WS2 is an excellent release material for plastic molds, extrusion molds and other demolding applications.
WS2 can eliminate the need for hydraulic oil, or can be used with petrochemical oil, grease, synthetic oil, silicone valve and hydraulic oil. It has an affinity for the fluid layer and maintains the fluid layer. It helps to keep oil or grease on the surface, thereby further improving the lubrication effect.
When the thickness is less than 1 micron, small parts can be coated without tolerance problems.
WS2 is also a fairly inert and non-toxic material that has been used in medical equipment and food processing applications.
WS2 replaces customer base materials through high-speed processes at ambient temperature. It does not make the substrate continuous or warped.
WS2 can be used alone or combined with our PVD hard coating to improve durability.
Storage Condition of Tungsten Disulfide WS2 Powder:
Damp reunion will affect WS2 powder dispersion performance and using effects, therefore, Tungsten Disulfide WS2 Powder should be sealed in vacuum packing and stored in cool and dry room, the Tungsten Disulfide WS2 Powder can not be exposure to air. In addition, the WS2 powder should be avoided under stress.
Packing & Shipping of Tungsten Disulfide WS2 Powder:
We have many different kinds of packing which depends on the Tungsten Disulfide WS2 Powder quantity.
Tungsten Disulfide WS2 Powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Tungsten Disulfide WS2 Powder shipping:could be shipped out by sea , by air, by express?as soon as possible once payment receipt.
Tungsten Sulfide Properties
|Other Names||tungsten sulfide (WS2), tungsten disulphide,|
tungsten(IV) sulfide, WS2 powder
|Appearance||Gray to Black Powder|
|Melting Point||1250 °C|
|Solubility in H2O||N/A|
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Tungsten Sulfide Health & Safety Information
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|
|Appearance||Gray to Black Powder|
|Melting Point||3246 °C|
|Solubility in H2O||N/A|
|Exact Mass||111.923315 g/mol|
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Zirconium Diboride Health & Safety Information
|Transport Information||UN3178 4.1/PG III|