What is Zinc Sulfide?

Posted on 2023-04-04

What is it? Zinc Sulfide ? Zin sulfide can be described as an organic compound with a chemical composition of ZnS. This is a white, slightly yellow powder which becomes darker when…

What is it? Zinc Sulfide ? Zin sulfide can be described as an organic compound with a chemical composition of ZnS. This is a white, slightly yellow powder which becomes darker when exposed sunlight. It is stable when dry, but will slowly oxidize to zinc sulfate in humid conditions.
Zinc Sulfide: The key features
1. Physical Properties
Powder that is white to slightly yellow. It can be made crystals by heating it with H2S gas. It can be found in sphalerite as a colorless, hexagonal crystal. It is insoluble when dissolved in water. It is soluble in acid. You can see the sun color darken.
2. Chemical Properties
If it is left in humid air for too long, it will convert to zinc sulfate. It is generally formed from the interaction of hydrogen sulfide with zinc salt solution. When the crystal ZnS is illuminated with a small amount Cu and Mn, it can produce different colors of fluorescence. To prepare phosphors, coatings or paints, as well as filling rubber, plastics and opaque glass.
Zinc Sulfide Property
Other Titles ZnS powder, zinc sulphide, zinc sulfide phosphor
No. 1314-98-3
Combination Formula ZnS
Molecular Weight 97.45
Appearance Powders in white to off-white
Melting Point 1830 degC
Boiling Point N/A
Density 4.1 g/cm3
Solubility of H2O N/A
Poisson’s Ratio 0.28
Specific heat 520 J/kg-K
Thermal Conductivity 27 W/m-K
Thermal Expansion 6.5 um/m-K
Young’s Modulus 75 GPa
ZnS Powder CAS1314-98-3
Zinc Sulfide: What are the applications?
1. Zinc sulfuride (ZnS), is widely used to make infrared fairings, windows, and optical components. It has high purity, is insoluble in water, moderate densities, and is easy to process. Zinc sulfuride (ZnS), which has excellent refractive index uniformity. It has very good image transmission performance within the 8-12mm range. Some absorb after 10um. Mid-infrared bands have a higher transmittance and more scattering and absorption. Zinc sulfuride (ZnSe) is strong in harsh environments, has high hardness, and twice as strong as zinc selenide.
2. For the infrared band and window (8 to 14mm), tough front optics for Zinc sulfide thermal imaging systems. ZnS (single crystal zinc sulfide) is not widely available. The scattering is low in the common spectral range. The material’s bulk absorption and structural defects can be controlled, but the laser device can still be used for high-power purposes. It must use the chemicalbook polishing technique with the lowest damage level and the highest optical quality coating. Zinc sulfuride (ZnS), which oxidizes strongly at 300°C, displays plastic deformation around 500°C and is dissociated at approximately 700°C, can be used as a high-power laser device. In normal conditions, zinc sulfide window should not exceed 250 degC.
3. Optical Coating Targets. X-ray screen. The watch’s luminous dial can be enhanced by adding traces or neothorium sodium. TV screen. paint pigments.
Alert
This product can cause severe corrosive reactions. poisonous. It can cause irritation to the skin. Operators should wear protective gear and work clothes. The workshop must be well ventilated.
Zinc Sulfide is the main supplier
Tech Co., Ltd. () is a professional Sulfide powder Over 12 years’ experience in chemical product development and research. We accept credit cards, T/T and West Union payments. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.
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Where do you get aluminum nitride?

Posted on 2023-04-03

Aluminum nitride is a sort of refractory composite ceramic material with hexagonal wurtzite structure. Pure light weight aluminum nitride is blue-white, as well as aluminum nitride ceramic is usually gray or white….

Aluminum nitride is a sort of refractory composite ceramic material with hexagonal wurtzite structure. Pure light weight aluminum nitride is blue-white, as well as aluminum nitride ceramic is usually gray or white.

Aluminum nitride is stable at heat in inert environment and thaws at 2800 °& deg; C. It has high thermal conductivity and excellent electric insulation, as well as low dielectric consistent and dielectric loss. This mix of residential or commercial properties makes it an essential sophisticated product for many applications such as optics, lighting, electronic devices and also renewable resource.

The typically used approaches for preparing light weight aluminum nitride are direct nitriding, carbothermal decrease, high energy round milling, high temperature level self-propagating synthesis, chemical vapor deposition as well as so on.

AlN light weight aluminum nitride properties:
Can withstand the disintegration of the majority of molten metals, specifically light weight aluminum, lithium as well as copper.
It can stand up to the disintegration of most molten salts, consisting of chloride and cryolite.
High thermal conductivity of ceramic materials (second just to beryllium oxide).
High quantity resistivity.
High dielectric toughness.
It is eroded by acids and bases.

Where is Aluminium nitride made use of?
Aluminum nitride aln is a strong nitride of light weight aluminum. It has high thermal conductivity as much as 321 W/(m & middot; K) as well as is a type of electrical insulator.
Light weight aluminum nitride is widely made use of as a result of its thermal conductivity and typically replaces beryllium oxide since of the fundamental health dangers connected with making use of BeO. Much more significantly, from a practical point of view, the aluminum nitride cte (thermal expansion coefficient) is significantly reduced than that of alumina or beryllium oxide, which enables for the most effective matching with CTE equal silicon-based applications. Furthermore, light weight aluminum nitride does not respond with the majority of process chemicals and gases, that makes it a lot more suitable for usage in the semiconductor market.

Use aln aluminium nitride:
Radiator and radiator.
Electric insulator of laser.
Chucks and also clamps for semiconductor processing devices.
Silicon wafer processing and also handling.
Substratums as well as insulators for microelectronic and also optoelectronic gadgets.
Digital product packaging substratum.
Chip carriers for sensing units as well as detectors.
Little chip.
Chuck.
Laser thermal administration module.
Molten metal component.
Microwave equipment packaging.

Is light weight aluminum nitride a ceramic?
Light weight aluminum nitride is a type of covalent bond ceramics.

Light weight aluminum nitride cost
The price is influenced by lots of aspects including the supply and also need in the market, sector trends, financial task, market view, and unforeseen events.
If you are looking for the newest AlN rate, you can send us your questions for a quote. (brad@ihpa.net)

How do you get aluminum nitride?
Modern Technology Co. Ltd. () is a relied on light weight aluminum nitride maker and aluminum nitride provider.
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Sodium Stearate Solubility in Water

Posted on 2023-04-03

sodium stearate solubility in waterSodium stearate is soluble in water and can be used as a gelling agent, surfactant, thickener and solidifier. It can be found in a wide range of products,…

sodium stearate solubility in water

Sodium stearate is soluble in water and can be used as a gelling agent, surfactant, thickener and solidifier. It can be found in a wide range of products, and is often found in soaps, lotions, deodorant sticks, etc.

In the pharmaceutical industry, it is a widely used surfactant to help with the solubility of hydrophobic compounds. It also helps with the control of foaming during rinsing in detergents and shampoos.

The chemical name of sodium stearate is stearic acid, but it is actually the sodium salt of stearic acid (also known as octadecanoic acid). It is one of the least allergy-causing of the salts of fatty acids, and it has no irritating properties to skin or eyes.

It has many applications and is used in a number of different processes, including soap production, toothpaste manufacture, lubrication, water repellency, plastic stabilizer and metal processing. It is often used in acrylate rubber soap/sulfur and vulcanization systems, and as an emulsifier, dispersant, thickener, surface treatment agent and corrosion inhibitor.

Alkali metal stearates are blends of an alkali metal such as sodium, potassium, tin or magnesium with either stearic acid or palmitic acid. This chemical structure enables them to be very soluble in water.

They have a low melting point, which makes them useful in the manufacture of lubricants and gels for a variety of applications. They are also used in the manufacturing of coatings, adhesives and paints.

Solubility in water is a very important feature for the chemical industry because it determines how much water is needed to bind ingredients together and how well they will flow through the system. It is a major factor in formulating and manufacturing liquid soaps, shampoos and other detergents.

What is Few Layer Graphene?

Posted on 2023-04-03

What is it? F ew ayer raphene ? The graphene layers consist of thin layers of carbon molecules arranged in a honeycomb hexagonal lattice. The key features of F ew L Ayer…

What is it? F ew ayer raphene ? The graphene layers consist of thin layers of carbon molecules arranged in a honeycomb hexagonal lattice.
The key features of F ew L Ayer G raphene
Few-layer graphene preserves the original crystal structure, characteristics and other properties of natural flake graphite. It is large in shape (diameter/thickness ratio), and has excellent electrical, thermal, and mechanical properties. Excellent electrical conductivity, lubrication resistance, corrosion resistance and other characteristics. The specific surface of the graphene layers is 400700m2/g. The thickness is 0.553.74nm. Graphene has a high surface specificity. It can be mixed easily with other materials like polymers to create a good interface.
Graphene Powder Properties
Other Titles Graphene nanopowder, 2D carbon, monolayer graphene,
bilayer graphene, graphene nanosheets, graphene nanoribbons,
graphene nanoplatelet
No. 1034343-98-0
Combination Formula C
Molecular Weight 12.01
Appearance Black Powder
Melting Point 3652-3697
Boiling Point 4200
Density 2.267 g/cm3
Solubility of H2O N/A
Thermal Expansion N/A
Anode Material for Lithium Battery Few Layer Graphene (CAS 1034343-398-0
F. ew L ayer G raphene
As an excellent base material for industrial-scale functional composites materials, graphene layers will play a crucial role in this new industrial revolution. These graphene flakes can be attached with inorganic particles to stop them being stacked multiple times during chemical reduction. It can also encourage the formation of new materials with graphene carriers. The graphene inorganic nanocomposites have excellent performance. They can be widely utilized in sensors, supercapacitors batteries, batteries, catalysis, and other fields. These outstanding properties can dramatically improve the performance nanomaterials.
Few-layer graphene offers great utility in the energy sector. It is also very useful in supercapacitors, hydrogen storage, natural gas storage and in lithium battery applications. Single-layer/few-layer graphene with fewer defects in structure is currently the most widely used negative electrode material for commercial lithium-ion batteries; and defect-rich, few-layer graphene is currently the main electrode material for supercapacitors. The supercapacitors’ large surface area and excellent conductivity are conducive for nanoparticle dispersion. This facilitates electron transfer from nanoparticles into the graphene matrix. This is known as the passive film phenomenon. This is an effect that improves the battery’s cycle performance. Using graphene in place of traditional graphite materials for lithium-ionbatteries will increase the lithium storage potential of the negative electro. In addition, the graphene material contains lithium ions. The diffusion path is short and conductivity high, which can dramatically improve the rate performance. For hydrogen storage, some atoms (such transition metals, alkali metallics) are first absorbed on graphene. The adsorption is the charge transfer that occurs between the increased and substrate atoms. This alters the local charge density which greatly increases the adsorption of graphene for hydrogen.
F Supplier ew L ayer G raphene
Tech Co., Ltd. () is a professional Lithium Batterie Anode Over 12 years’ experience in chemical products development and research. We accept credit cards, T/T and West Union payments. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.
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What is Tin disulfide?

Posted on 2023-04-03

What is Tin disulfide and how does it work? The inorganic compound Tin isulfide has a chemical composition of SnS2. It is a yellow hexagonal flake containing a CdI2 crystalline structure. It…

What is Tin disulfide and how does it work? The inorganic compound Tin isulfide has a chemical composition of SnS2. It is a yellow hexagonal flake containing a CdI2 crystalline structure. It is very insoluble in water. However, it is easily soluble and soluble with aqua regia, hot alkaline solution, as well as sodium sulfide solution. This is often used to make golden paint.
Tin disulfide dissolves in aqua regia or hot alkali solutions. However, concentrated hydrochloric can cause a coordination reaction. It can also react with ammonium-sulfide to disperse.
How to prepare Tin Disulfide
Tin disulfide is made by mixing tin and sulfur with iodine. This reaction needs heating.
Sn + 2 SnS2
Another option is to pass hydrogen sulfuride into the Tin (IV) salt, or Tin (IV), salt solution and precipitate.
Electrochemical behaviour of multi-walled Carbon Nanotubes confined Tin disulfide used as a Negative Electrode of Lithium Ion Battery
Multi-walled carbon-nanotube-confined metal-tin nanostructures were prepared using the direct current arc Plasma method. Brad@ihpa.net was then used as a precursor in methane, and finally brad@ihpa.net was obtained by the sulfurization process. Raman, XRD (XRD), transmission electron microscopy, (TEM) results showed that the multi-walled carbon-nanotubes were about 400nm in length, the surface carbon layer had been well crystallized and the carbon layer was approximately 10 nm thick. Sn brad@ihpa.net Nanostructures are used as anode material in lithium-ion battery. They show a good electrochemical performance. The first charge-discharge Coulomb efficiency of 71% is achieved, and after 50 cycles the capacity maintains 703?mAh?g-1. Brad@ihpa.net Nanostructured Electrodes have high capacity because a variety active materials are used together and each material reacts differently.
Study on electrochemical performance of tin disulfide/single-walled carbon nanotube composite material used as anode material for lithium-ion battery
The simple solvothermal process allowed for the creation of a new composite material consisting of SnS2 (SWCNTs), and single-walled, carbon nanotubes (SWCNTs). After it is applied to the negative electrode of a lithium ion batteries, it has good electrochemical performances. It maintains a specific capacity of 515 mAh/g even at high current density (1 A/g), after 100 cycles. To compare, we used the exact same method to synthesize one SnS2 materials and performed electrochemical tests. The SnS2 materials have a relatively high specific capacity but a poor cycle performance and decays rapidly after only 20 cycles. This composite material is superior in lithium-ion batteries because of its synergy with SnS2 (and SWCNTs).
Tin disulfide Supplier
(aka. Technology Co. Ltd. (aka. Our company has developed a number of materials. Our Tin diulfide has high purity, fine particle sizes, and very low impurity. To get the current price ofTin diulfide, please send an email or click the required products to send an enquiry.



The Applications of Titanium Boride

Posted on 2023-04-03

What is it? Titanium Boride ? Titanium boride powder, gray or gray-black in color, has a hexagonal crystal structure. It has a high hardness and a melting point of 2980degC. Titanium diboride…

What is it? Titanium Boride ? Titanium boride powder, gray or gray-black in color, has a hexagonal crystal structure. It has a high hardness and a melting point of 2980degC. Titanium diboride can withstand 1000°C of oxygen and is stable in HCl or HF acids. Titanium diboride can be used to prepare ceramic composite products. Its resistance to corrosion of molten steel makes it ideal for the production of electrolytic cell electrodes as well as molten crucibles.
These are the main features of Titanium Boride
Titanium boride, TiB 2 It is the most stable of all boron compounds and titanium. It has a C32 structure and is bound using valence bond. It is a metallicloid compound in the hexagonal system. The complete crystal’s structural parameters are: a = 0.3028 nm, and C = 0.3228 nm. The crystal structure is made up of the boron atomic and titanium atomic plans. In this structure, B is combined with three others by covalent bonds. An extra electron forms an enormous p bond. This graphite-like Ti boron atomic layer structure and Ti outer electrons are responsible for the high electrical conductivity and metallic shine of TiB. 2 This material has high hardness and brilliance because of the Ti-B bonds between the titanium atomic plan and the boron plane.
Titanium Boride Properties
Other Titles TiB2, TiB2 powder, titanium boride powder
No. 12045-63-5
Combination Formula TiB2
Molecular Weight 69.489
Appearance Gray Powder
Melting Point 2980 degC
Boiling Point N/A
Density 4.52 g/cm3
Solubility of H2O N/A
Thermal Expansion Code 8.1×10-6m/m.k
Thermal Conductivity 25J/m.s.k
Electrical Resistivity 14.4mO.cm
Exact 69.96656 D
Titanium Diboride TTB2 Powder CAS 12045-63-5
Titanium Boride’s applications
1. Conductive ceramic material. It is one of the most important raw materials for vacuum coating conductive boat.
2. Use ceramic cutting tools and molds. It can make finishing tools, wire drawings, extrusion and sealing dies.
3. Composite ceramic materials. It can be used in multi-component materials to create composite materials using TiC, TiN and SiC. This will allow you to make many high-temperature-resistant parts and functional pieces such as engine parts, high temperature crucibles and engine parts. It is also an excellent material to make armor protection materials.
4. Aluminum electrolytic cells cathode coating material. The good wettability of TiB2 and molten steel makes it possible to use TiB2 as the aluminum electrolytic’s cathode material. This will reduce power consumption and increase the battery life.
5. It is used to make PTC heating ceramic material as well as flexible PTC materials. These materials have the advantages of being safe, reliable, efficient, and simple to process and mold. It is an upgraded high-tech product from various electric heating material.
6. Good strengthening agent for metal materials like Al, Fe, Cu.
High-quality Titanium Boride Supplier
Luoyang Tech Co., Ltd. is a professional Boride powder Over 12 years of chemical products research and product development experience. We accept credit cards, T/T and Paypal payments. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.
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Hafnium diboride applications and characteristics

Posted on 2023-04-02

What is hafnium Diboride Powder? Hafnium Diboride is an ultra-high-temperature ceramic that is made from hafnium, boron. It is an unusual ceramic with high heat conductivity and conduction. It is a metallic…

What is hafnium Diboride Powder? Hafnium Diboride is an ultra-high-temperature ceramic that is made from hafnium, boron. It is an unusual ceramic with high heat conductivity and conduction. It is a metallic gray color. Hafnium dioxide has a hexagonal structure and a density 10.5 g/cc. It can melt at approximately 3,250 degrees Celsius. Hafnium diboride’s resistance to oxidation is affected by temperature and pressure. At 1500 degC and 1atm, it forms an oxide protective scale. HfB2’s antioxidant activity decreases when temperatures rise above 1600degC and pressure falls below 1 atm. In these conditions, B2O3 (one the oxidation products from HfB2) boils at a higher temperature than B2O3, creating a protective layer of oxide.
Uses of hafnium diboride powder
Because of its strength and thermal characteristics, HfB2 can be used in ultra high-speed reentry aircrafts, such as an INTERCONTINENTAL missile heat shield or pneumatic front. HfB2 has an aerodynamic form and doesn’t ablate upon reentry, unlike polymers and composites.
Hafnium Diboride is also being considered as a possibility for new materials in nuclear reactor control rods.
It is also being investigated as a diffusion shield for microchips. The barrier can be made less than 7 nanometers thick if synthesized properly.
Hafnium diboride powder characteristics :
Hafnium Diboride is an ultra-high temperature ceramic that’s made from hafnium, boron. It melts at approximately 3,250 degrees Celsius. It is a unique ceramic with high heat conduction, electrical conductivity, and similar properties to titanium and zirconium triboride. It is a gray, metallic substance. Hafnium Diboride has hexagonal crystal structures with a molar density of 10.5g/cc and a mass of 200.11g/mol.
How is hafnium Diboride powder manufactured?
The following steps will guide you through the process of creating a high-purity hafnium diboride dust by combustion.
1. Mix base ingredients and thinner. Mix base ingredients with thinner.
2. Dry and mix
3. The graphite powder should be evenly mixed. The closed pressure vessel is then cooled with circulating waters. The reaction is performed under 0-5mpa pressure, or in a vacuum protected by an atmosphere. By self-propagating burning, raw materials can be transformed into products.
4. Cool the product. It is a mixture between hafnium dioxide and magnesium oxide. To obtain hafnium Diboride powder, magnesium oxide must be removed by picking.
Hafnium diboride powder supplier
(aka. Technology Co. Ltd. (aka. Our company has developed a number of materials. Our company’s Hafnium Diboride is high in purity, fine particle size and has low impurities. Send us an e-mail or click on this link Needed products Send an inquiry

What is Stainless Steel 316L Powder?

Posted on 2023-04-02

What is it? Stainless Steel 316L Stainless Steel 316L – Powder ? 316 stainless has more carbon than 316L. This is easy because L stands for low. 316L is almost identical in…

What is it? Stainless Steel 316L Stainless Steel 316L – Powder ? 316 stainless has more carbon than 316L. This is easy because L stands for low. 316L is almost identical in every way to 316L, even though it contains less carbon. Both are affordable and durable.
The key features of Stainless Steel 316L Powder
316L stainless is an excellent steel. It has excellent resistance against corrosion, high toughness and good durability. The metal is stain-proof and corrosion-resistant as long the invisible film, also known as passive layer, remains intact.
Stainless Steel powders SS316L properties
Other Titles Stainless steel powders: SS316 powder, SS316L Powder
No. 52013-36-2
Combination Formula SS316L
Molecular Weight N/A
Appearance Grey black powder
Melting Point N/A
Solubility of in water N/A
Density 7.9g/cm3
Purity 99.90%
Particle size 0-20mm, 15-45mm, 15-53mm,53-105mm, 53-150mm, 105-250mm
Boling Point N/A
Specific heat N/A
Thermal Conductivity N/A
Thermal Expansion N/A
Young’s Modulus N/A
Exact Mass N/A
Monoisotopic N/A
3D Printer Stainless Steel Powder
Application of Stainless Steel 316L Stainless Steel Powder
As with titanium and aluminum, stainless can be used for 3D printing complex designs that are otherwise impossible. Due to its strength, stainless can also be used to produce large objects. 3D printing technology will allow stainless steel to be used for even more purposes.
3D-printed stainless metals are just like traditional stainless. They can be used in a variety of applications, including:
Jewelry.
Tools.
Construction applications
Caps for dental work
Metal implants
Industrial applications – Design functional components.
Decorative models, such as keys, medals, and statues.
For military applications.
The supplier Stainless Steel 316L Powder
Tech Co., Ltd. () is a professional 3D Printer Powder Over 12 years’ experience in chemical products development and research. We accept credit cards, T/T and West Union payments. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.
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Brief introduction of Zinc Sulfide

Posted on 2023-04-02

What Zinc Sulfide is? A white, off-white, or light yellow powder of zinc sulfide. Zinc sulfide turns darker when exposed light is applied. Zinc sulfuride is stable in dry atmosphere. It will…

What Zinc Sulfide is? A white, off-white, or light yellow powder of zinc sulfide. Zinc sulfide turns darker when exposed light is applied. Zinc sulfuride is stable in dry atmosphere. It will slowly oxidize to zinc sulfurate if left in humid conditions for too long. Zinc sulfuride is easily soluble and soluble with dilute inorganic acid. However, it is not soluble when dissolved in water. Its relative density (a type), (d25), and 4.102 (b types) is 3.98.
Is Zinc Sulfide fluorescent, or phosphorescent?
Zinc sulfuride is one of most commonly used phosphorescent substances. Phosphorescence can be described as a special kind of photoluminescence. Phosphorescent materials emit absorbed energy at the same time as fluorescent substances.
What are some properties of zinc sulfuride?
Zinc sulfuride is a white, or slightly yellow powder. It forms crystals in the presence of H2S gas. Its alpha form is a hexagonal colorless crystal with a density 3.99g/cm3 melting point at 1700degC. Its beta version is a cubic colorless crystal with a density o 4.102g/cm3. At 1020degC, it transforms into an alpha form. Zinc sulfide can be found in sphalerite. Insoluble when water is used. Soluble in acid. You can see the sun dimmed.
Zinc sulfuride is transformed into zinc sulfide in humid conditions for a long period. It is generally formed from the interaction of hydrogen sulfide with zinc salt solution. A small amount of Cu Mn, Ag can be added as an activator to the crystalline ZnS. It will emit different colors of fluorescence when illuminated. Zinc sulfuride can be used to make coatings or analytical reagents. It can also be used to create paint, opaque glass and rubber as well as plastic and phosphor.
Is zinc sulfide FCC or BCC?
Zincblende/sphalerite is based on an FCC lattice of anions whereas wurtzite is derived from an hcp array of anions. The cations are found in both structures and occupy one type of tetrahedralhole.
How to make zinc sulfide.
Method 1: Add ammonium to the zinc salt solution. You will get a white precipitate.
Method 2: Add ammonium to the zinc sulfate, and then pass in hydrogen to cause precipitation. After the precipitate has been filtered, it is dried in an isolation room. This will give you a clear white crystal zinc sulfide.
Why does zinc sulfide glow?
The color additive luminescent sulfide, which is zinc sulfur with a copper activator, is zinc sulfide. Lumenescent zinc sulfide emits a yellow-green color when it is excited by sunlight or artificial light. It can produce a maximum of 530 nanometers.
Zinc Sulfide supplier
(aka. Technology Co. Ltd. (aka. Our company has developed a number of materials. Our company produces zinc sulfide of high purity and excellent quality. Send an email to us, or click on one of the requested products for an inquiry.


Lead Telluride and Thermoelectric Materials

Posted on 2023-04-02

lead telluride, PbTe, is a compound of lead and tellurium that forms white cubic crystals. It has a hardness of 3 on the Mohs scale and is slightly soluble in water. It…

lead telluride, PbTe, is a compound of lead and tellurium that forms white cubic crystals. It has a hardness of 3 on the Mohs scale and is slightly soluble in water. It has semiconductive and photoconductive properties.

It has been used as a catalyst for oxygen reduction in fuel cells and is an important component of primary batteries. It is also used in vacuum switches, tunable lasers and thermistors.

Thermoelectric Materials

High temperature thermoelectric generators have been very successful in space and terrestrial applications for decades. Thermoelectric generators provide a compact, silent, reliable and low maintenance power source.

They are highly efficient and operate at temperatures up to 900 K. They are also very resistant to vapor pressure and chemical corrosion, making them ideal for use in remote applications and in space.

A number of lead salts have been studied for thermoelectric applications and the most common is PbTe4.

Among them, simple binary PbTe alloys exhibit excellent thermoelectric performances in n- and p-type modes with an optimized peak zT of 1.4. This zT value far exceeds the values reported since 1960 and is due to the large Gruneisen parameter and high valley degeneracy of the material.

Thermoelectric power generation using lead telluride single crystals can be enhanced by band-gap engineering with appropriate n- and p-type doping agents. Generally, halogens are used for n-type doping agents such as PbCl2, PbBr2 and PbI2. Na2Te, K2Te, Ag2Te are commonly employed for p-type doping.


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