Category: Telluride Powder

Telluride Powder

Bismuth Telluride Powder Bi2Te3 Cas 1304-82-1

About Bismuth Telluride Powder Bi2Te3 Powder:
Bismuth telluride is a gray powder with the molecular formula Bi2Te3. Bismuth telluride is a semiconductor material with good electrical conductivity, but poor thermal conductivity. Although the danger of bismuth telluride is low, it can be fatal if ingested in large amounts. However, this material can allow electrons to move on its surface without energy consumption at room temperature, which will bring a leap in the operating speed of the chip, even It can greatly improve the operating speed and work efficiency of the computer chip.
Bismuth telluride is a compound semiconductor of elements V and VI of the main group of the periodic table. Triangular crystal, the unit cell is a rhombic hexahedron, the lattice constant is 1.0473nm, and the density is 7.8587g/cm3. The melting point is 585°C. Combined by covalent bonds, there are certain ionic bond components.
Bismuth telluride is an indirect bandgap semiconductor with a bandgap of 0.145eV at room temperature, electron and hole mobility of 0.135 and 4.4×10-2m2/(V·s), respectively, and a thermoelectric quality coefficient of 1.6×10-3/K. Feel free to send an inquiry to get the latest price if you would like to buy Bismuth Telluride Powder Bi2Te3 Powder in bulk.

Features of Bismuth telluride  Bi2Te3 powder:

Bismuth telluride is a semiconductor material, with good conductivity, but poor thermal conductivity. Although the risk of bismuth telluride is low, if a large number of intake is also a fatal danger but this material can allow electrons at room temperature without energy in the surface of its movement, which will bring the chip speed of operation, even Can greatly improve the computer chip running speed and efficiency.

Specification of Bismuth telluride powder Bi2Te3 powder: 

Note: according to user requirements can provide different size products.

How is Bismuth Telluride Powder Bi2Te3 Powder produced?
Bismuth telluride is prepared by the Bridgman method, zone melting method, and Czochralski method. The mineral form of Bi2Te3 is bismuth telluride, which is moderately rare. There are many natural bismuth tellurides with different stoichiometric ratios, as well as compounds of the Bi-Te-S-(Se) system, such as Bi2Te2S.
The mixed powder of quartz and tellurium metal can be sealed in a quartz tube under vacuum (this is critical because unsealed or leaked samples may explode in the furnace), and then heated to 800°C in a muffle furnace To achieve the preparation of bismuth telluride.

Application of Bismuth Telluride Powder Bi2Te3 Powder:
Bismuth telluride (Bi2Te3) is basically an effective thermoelectric material. Nowadays, due to its potential applications, it has aroused great interest in another area of energy harvesting, chip cooling, chip sensing and material science.
Bismuth telluride and its alloys are widely used as thermoelectric refrigeration materials. When the heat source temperature is moderate, they are also the best materials for thermoelectric generators.
Bismuth telluride is commonly used for power generation or cooling applications, as a topological insulator.
Topological insulators are not conventional superconductors, nor can they be used for ultra-efficient power lines, because they can only carry very small currents, but they paved the way for the paradigm shift in microchip development, which will lead to new applications of spintronics, That is, the use of electron spin to carry information. Moreover, bismuth telluride is very easy to produce and use in practical applications. This three-dimensional material can be manufactured by the existing mature semiconductor technology, and it is also easy to dope so that its performance can be tuned quite easily.

Storage Condition of Bismuth telluride powder Bi2Te3 powder:
The damp reunion will affect Bi2Te3 powder dispersion performance and using effects, therefore, Bismuth telluride powder Bi2Te3 powder should be sealed in vacuum packing and stored in cool and dry room, Bismuth telluride can not be exposure to air. In addition, the Bi2Te3 powder should be avoided under stress.

Packing & Shipping of Bismuth telluride powder Bi2Te3 powder:
We have many different kinds of packing which depend on the Bismuth telluride powder Bi2Te3 powder quantity.
Bismuth telluride powder Bi2Te3 powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Bismuth telluride powder Bi2Te3 powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.

2023-01-05

Telluride Powder

Antimony Telluride Powder Sb2Te3 Cas 1327-50-0

About Antimony Telluride Sb2Te3 powder:
Antimony telluride chemical formula Sb2TE3.Molecular weight 626.30.Gray solid.Melting point 639℃, relative density 6.5018. Dissolve in nitric acid. Antimony telluride is a covalent bond, ionic bond, has a certain van der Waals bond composition, triangular crystal system, the original cell is rhombus hexahedron.
Like other alveolar sulfide layered materials antimony, telluride is a gray crystalline solid with a layered structure. The layer consists of two atomic antimony and three atomic protein sheets and is held by weak van der Waals forces.Sb2Te3 is a narrow-gap semiconductor with a bandgap of 0.21eV. It is also a topological insulator and thus exhibits thickness-dependent physical properties.
Sb2Te3 has a rhomboid crystal structure. The crystalline material consists of covalently bonded atoms to form five atom-thick sheets (in order: Te-Sb-Te-Te), holding the plates together with the Van der Waals attraction. Due to its lamellar structure and weak interlamellar forces, the bulk telluride can be mechanically stripped to separate the monolayers. Antimony and bismuth, like other binary choline, have been studied as semiconductor properties of Sb2Te3. By doing it with appropriate dopants, it can be converted to N-type and P-type semiconductors. Feel free to send an inquiry to get the latest price if you would like to buy Antimony Telluride Sb2Te3 powder in bulk.

Features of Antimony Telluride Sb2Te3 powder:

Antimony telluride is an inorganic compound, the chemical formula is Sb2Te3. It is a gray crystal, but the melting point, density and color may depend on the crystal type used.Gray solid, Melting Point: 629℃, Density: 6.5 g/mL at 25 centigrade(lit.)  
 

Specification of Antimony Telluride Sb2Te3 powder:

Note: according to user requirements can provide different size products.

Technical Parameter of Antimony Telluride Sb2Te3 powder:

How is Antimony Telluride Sb2Te3 powder produced?
Telluride antimony preparation is as follows: using SbCl3 and K2TeO3 as starting materials, according to the stoichiometric ratio of n (SbCl3): n (K2TeO3) = 2:3 said take 0.002 mol SbCl3 and 0.003 mol K2TeO3, 250 ml and join the two round bottom flask, and then add in the 0.5 g polyvinylpyrrolidone, 80 ml 0.5 gNaOH and a reduction of diethylene glycol (take) by the measuring cylinder, put two round bottom flask temperature control heating jacket, set the temperature of 240 ° C, insulation 4 h, adjusting the rotational speed of 500 r/min.After the temperature of the reactants dropped to room temperature, the centrifuge was centrifuged 3 times with isopropyl alcohol and acetone, respectively. The centrifuge speed was set at 4000r/min, and the time was 4min. At the end of centrifugation, the upper liquid became colorless. The temperature of the reactant is reduced to 100 ml of centrifuge tube at room temperature, and the centrifugal is centrifuged with isopropanol and acetone. Black precipitate was taken out in an oven for 6 h and finally gave a black Sb2Te3 powder.
 
Application of Antimony Telluride Sb2Te3 powder:
Like other antimony and bismuth binary chalcogenides, the semiconducting properties of Sb2Te3 have been investigated. It can be converted to N-type and P-type semiconductors by doping appropriate dopants.
Compared with the single-frequency detection of pure Sb2Te3, iron-doped Sb2Te3 introduces multiple Fermi pockets, resulting in lower carrier density and mobility.
Sb2Te3 and germanium telluride (GeTE) form a pseudo-binary intermetallic germanium antimony telluride system.
Antimony telluride, like bismuth telluride and Bi2Te3, is used in solid-state refrigerators because of its strong thermoelectric effect.

Storage Condition of Antimony Telluride Sb2Te3 powder:

Keep the reservoir sealed and stored in a cool and dry place, Make sure that the workshop has good ventilation or exhaust devices.

Packing & Shipping of Antimony Telluride Sb2Te3 powder:
We have many different kinds of packing which depend on the Antimony Telluride Sb2Te3 powder quantity.
Antimony Telluride Sb2Te3 powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Antimony Telluride Sb2Te3 powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.


 

2022-12-15

Telluride Powder

Mercury Telluride HgTe Powder CAS 12068-90-5

About Mercury Telluride HgTe Powder:
Mercury Telluride is a binary compound of mercury and tellurium. The chemical formula is HgTe. It is a semi-metal related to class II-VI semiconductor materials. Other names are mercury telluride and mercury telluride (II).HgTe occurs in nature in the form of coloradoite.
Mercury selenide is a grayish-black tetragonal crystal. Poisonous.Relative density 8.266. In nitrogen, carbon dioxide atmosphere or vacuum heating to about 600℃ when the sublimation, sublimation for purple-black. High conductivity, up to 3000Ω-1cm-1.Electron conductive material. Biomedicalmaterialsprogram is a trusted global Mercury Telluride HgTe Powder supplier. Feel free to send an inquiry about the latest price of Mercury Telluride at any time.

Product Performance of Mercury Telluride HgTe Powder :

The chemical formula of mercury telluride is HgTe, which is a binary inorganic compound composed of tellurium and mercury elements. It is a black crystal under room temperature.

Technical Parameter of Mercury Telluride HgTe Powder :

How is Mercury Telluride HgTe Powder Produced?
The preparation method of mercury selenide is as follows:
1. Under the condition of isolated air, dilute solution of HgCl2 is dropped into a saturated aqueous solution of H2Se to obtain HgTe precipitated product. Note that HgCl2 should not be in excess and a high concentration of HgCl2 solution should not be used, otherwise, HgCl2· 2HgTe precipitation will be formed.

2. Add HgCl2 to highly ammoniacal NaCN solution according to stoichiometric ratio, and then add equal weight SeO2.After the mixed solution is filtered, SO2 gas is passed into it. The solution must be kept alkaline throughout the reaction to prevent the red selenium from precipitating out. The endpoint of the reaction can be determined by the decrease in the rate at which SO2 is absorbed. At the end of the reaction, the black HgTe was filtered, washed with dilute NaCl solution containing ammonia, washed with distilled water, and finally dried in a dryer containing P2O5.

3. According to the stoichiometric ratio, Hg and Se are placed in a closed high-pressure vessel, and the reaction is carried out at the temperature of 550 ~ 600℃. Then the product is sublimated and purified in the pure N2 flow of 600 ~ 650℃, and pure HgTe can be obtained.
 
Applications of Mercury Telluride HgTe Powder:
As a semi-metallic material, mercury selenide is used in the manufacture of solar cells, thin-film transistors, infrared detectors and ultrasonic amplifiers. In addition, it is also used in the production of Hall effect high-resolution films and analytical reagents.
Hg selenide was used as a photocatalyst to degrade organic dye contaminants. The organic dye contaminants were irradiated with visible light, and HgTe was used as a photocatalyst for photocatalytic degradation.

Used in high-pressure discharge lamp to replace mercury non-toxic chemical stability selenide mercury new USES, with mercury and selenium compounds made of selenide instead of liquid mercury, mercury described selenide mercury and selenium in the weight ratio is equal to the ratio of the two elements GMW, dosage to keep high-pressure discharge lamp in 0 ~ 50% of liquid mercury, the rest of the mercury to corresponding GMW selenide mercury.

Metal halides, metals, and other chemical components can also be added to mercury selenide. The use of liquid mercury in high-intensity discharge lamps can be greatly reduced, and because HgTe is a stable substance, there is no liquid mercury or mercury vapor leakage even if the lamp breaks, so the mercury contamination can be greatly reduced.

Storage Condition of Mercury Telluride HgTe Powder :
The damp reunion will affect HgTe powder dispersion performance and using effects, therefore, mercury telluride HgTe powder should be sealed in vacuum packing and stored in the cool and dry room, the mercury telluride can not be exposure to air. In addition, the HgTe powder should be avoided under stress.

Packing & Shipping of Mercury Telluride HgTe Powder :
We have many different kinds of packing which depend on the mercury telluride HgTe powder quantity.
Mercury telluride HgTe powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Mercury telluride HgTe powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.

2022-12-03

Telluride Powder

Telluride Copper CuTe Powder Cas 12019-23-7

About Telluride Copper CuTe Powder:
Telluride copper - also known as alloys 145, Copper tellurium, C15400,145 semi shared tellurium and TECU- are copper-based alloys containing varying amounts of tellurium and phosphorus. Tellurium content usually ranges from 0.4 to 0.7 percent, while phosphorus content ranges from 0.004 to 0.12 percent.
 
Copper tellurium refers to an alloy of tellurium and copper. Copper tellurium containing 0.4-0.7% tellurium has good machinability. Telluride copper containing 50% tellurium and 50% copper is used as the master alloy.
 
Tellurium copper some mechanical, chemical, electrical and manufacturing performance include atmospheric corrosion resistance, high temperature and conductivity hydrogen embrittlement (i.e., caused by the introduction and diffusion hydrogen fracturing and weaken), 65-130 HV hardness, good formability (used for the cold and hot forming process), 85-90% of the machinability rating (if free cutting brass for 100), suitable for welding and brazing, not suitable for a particular welding process, such as coating metal arc welding, oxygen-acetylene welding, resistance welding, seam welding and spot welding.
 
Copper tellurium alloy has good machinability, excellent electrical and thermal conductivity, corrosion resistance and electric ablation resistance, and good cold and hot working performance. It is the copper alloy material with the best cutting performance among high copper alloys. It can be forged, cast, extruded and drawn, blanked and molded. Tellurium copper alloy can be processed into the plate, sheet, rod, wire, tube and other profiles and a variety of profiles. These properties make it suitable for a variety of industrial applications. Feel free to send an inquiry to get the latest price if you would like to buy Telluride Copper CuTe Powder in bulk.

Performance of Telluride copper CuTe powder:

Copper telluride is a chemical substance with the molecular formula CuTe. Copper telluride is a black powder, which is relatively stable in air at room temperature. Copper telluride is not only an important inorganic material but also an excellent form of storing tellurium and copper resources. In the H2SO4 solution, replacing Te with Cu generates copper telluride, which separates tellurium from many metal ions and obtains a relatively high concentration. When Cu replaces Te, Te can be + 4 valences or + 6 valences, all of which can generate Cu 2 Te, that is, it is not affected by the valence state of tellurium. In the presence of an oxidizing agent, copper telluride can chemically react with acids or bases, which is also the basis for separating and recovering Cu and Te. In short, tellurium and copper combine with each other at a higher temperature to recover tellurium from the solution.
 

Specification of Telluride copper CuTe powder :

Black crystal powder, room temperature is stable in the air. Copper telluride is not only an important inorganic material, or stores a great form of tellurium and copper resources.
 

Note: according to user requirements can provide different size products.

How is Telluride Copper CuTe Powder produced?
A preparation method for a copper tellurium alloy comprises the following steps:
1. After mixing high purity copper and high purity tellurium according to the ratio requirements, or after alternating layers of high purity copper and high purity tellurium, they are placed in a graphite crucible, and then the graphite crucible is sealed after replacing the air in the graphite crucible with protective gas;
2. Put the graphite crucible into a synthetic furnace, and the air in the furnace chamber of the synthetic furnace is passed into the protective gas after the furnace is closed.
3. Fill the furnace with protective gas until the pressure is 1.0~4.5MPa. At the same time, the temperature in the furnace rises from normal temperature within 60~90min to 1200~1450℃, and the temperature drops with the furnace after holding for 2~4h.
4. After the temperature in the synthesis furnace is lowered to less than 100℃, the protective gas in the synthesis furnace is drained to reduce the pressure in the synthesis furnace to normal pressure, and the furnace is opened to get copper tellurium alloy ingot.
 
Application of Telluride Copper CuTe Powder:
Tellurium copper alloy is mainly used for: high conductivity, high corrosion resistance of precision electronic and electrical components, advanced mechanical and electrical parts, forgings and thread cutting parts, plumbing fittings, electrical contact parts, plasma and laser cutting parts, automotive starter and switch parts, etc.
Tellurium copper alloy can be processed into the plate, sheet, rod, wire, tube and other profiles and a variety of profiles.
With the vigorous promotion of new energy vehicles and the construction of charging piles in recent years, new indicators have been developed for the contact materials of charging piles, such as arc resistance, service life and safety performance. Copper tellurium has been successfully applied in the field of high-current connectors for new energy vehicles due to its excellent electrical properties and easy processing characteristics.

Packing & Shipping of Telluride copper CuTe powder :
We have many different kinds of packing which depend on the Telluride copper CuTe powder quantity.
Telluride copper CuTe powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Telluride copper CuTe powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.

2022-11-25