2022年12月26日星期一

Violet Tungsten Oxide Price on DEC.23, 2022

violet tungsten oxide photo

Basic Trading Condition

Product Name

Violet Tungsten Oxide (Purple Tungsten Oxide)

Details

Purity:99.90%

Particle Size: 12~20um

Quantity:1,000.00KG

Price:55 USD/KG EXW, XIAMEN, CHINA

Payment:T/T in advance

Delivery Time: in 20 working days

Note: Re-check when quantity changed

Contact

Tel.:+86 592 512 9595  +86 592 512 9696

Fax.:+86 592 512 9797

Email:sales@chinatungsten.com

Business WeChat:

Disclaimer

The above quoted price is for reference only and shall not be used for final order. For detailed inquiry please contact us directly!

What Is Purple Tungsten Oxide?

Purple tungsten oxide (WO2.72 or W18O49, Purple Tungsten Oxide or Violet Tungsten Oxide, VTO for short) is a kind of tungsten oxide, which is a purple finely divided crystal powder with a molecular weight of 227.36.

Physical And Chemical Properties Of Purple Tungsten Oxide:

Appearance: purple or blue-purple broken crystal powder

Solubility: Insoluble in water, alcohol and most acids, soluble in ammonia and lye.

Preparation method of purple tungsten oxide:

The preparation of violet tungsten oxide is usually produced by controlling certain reducing conditions using ammonium paratungstate (APT), tungstic acid or tungsten trioxide (WO3) as raw materials. The preparation methods of violet tungsten usually include APT wet hydrogen direct reduction method, hydrogen tungstate reduction method, and APT mild reduction method.

Uses of purple tungsten oxide:

1. Preparation of tungsten powder, especially the preparation of nanometer, submicrometer or ultrafine tungsten powder.

2. Applied to gas sensor, showing good gas sensitivity to nitrogen dioxide at room temperature.

3. Preparation of tungsten carbide powder and ultrafine WC-Co powder.

4. Raw materials for the production of glass thermal insulation coating dispersions.

5. Additives for cathode materials of lithium batteries.

Purple Tungsten Oxide Packaging:

25kg or 50kg net weight, packed in double-layer polyethylene plastic bags inside, and plastic drums/iron drums as outer packaging; vacuum packaging or other net weight requirements, or the order weight is less than the standard packaging specifications, customized according to the actual situation; conventional packaging is Product name + batch number and other neutral text printing//writing, if you need personalized content, you can also customize.

More product details please visit: violet-tungsten-oxide.com

Tungsten Hexachloride Price on DEC.23, 2022

tungsten hexachloride photo

Basic Trading Condition

Product Name

Tungsten Hexachloride

Details

Purity:99.90%

Quantity:100.00KG

Price:120.00 USD/KG EXW, XIAMEN, CHINA

Payment:T/T in advance

Delivery Time: in 20 working days

Note: Re-check when quantity changed

Contact

Tel.:+86 592 512 9595  +86 592 512 9696

Fax.:+86 592 512 9797

Email:sales@chinatungsten.com

Business WeChat:

Disclaimer

The above quoted price is for reference only and shall not be used for final order. For detailed inquiry please contact us directly!

What Is Tungsten Hexachloride?

Tungsten hexachloride is a compound of tungsten and chlorine, the English name is tungsten hexachloride, the chemical formula is WCl6, and the molecular weight is 396.61. Under normal circumstances, the content of tungsten is not less than 46%, and the content of chlorine is not less than 53%.

Physical and Chemical Properties of Tungsten Hexachloride:

Appearance is dark blue or blue-purple fine-crystalline powder, easily soluble in carbon disulfide, soluble in ether, ethanol, benzene, carbon tetrachloride, easily decomposed by hot water, and oxidized by oxygen in the air to form tungsten oxychloride or tungsten oxychloride when heated. Tungsten oxide, and WCl6 containing tungsten oxychloride is easily decomposed by water vapor, and is reduced by hydrogen under high temperature conditions to precipitate tungsten powder.

Production Process of Tungsten Hexachloride:

1) Pretreatment of raw materials. The large particle tungsten powder is obtained by screening or sintering, the chlorine gas is purified and preheated at the same time, and the large particle activated carbon is screened for dehydration and deoxidation treatment in a high temperature chlorine atmosphere.

2) Crude tungsten hexachloride. The tungsten powder and chlorine react at the bottom of the chlorination furnace, and the generated tungsten hexachloride and tungsten chloride impurities flow out through the gas outlet in the form of steam.

3) Refining of tungsten hexachloride. The activated carbon is filled in the refining furnace, the steam generated by the chlorination furnace and the purified high-temperature chlorine gas of 5%-20% are refined in the refining furnace, and the tungsten oxychloride and low-valent tungsten chloride in the steam are reduced to tungsten hexachloride to obtain the refined steam.

4) Condensation reception. The refined steam enters the receiver, and the temperature of the cooling water is controlled to obtain high-purity tungsten hexachloride powder, and the exhaust gas is discharged.

5) Exhaust gas treatment. The tail gas is absorbed by the sodium hydroxide solution in the tail gas absorption tank, and the purified tail gas is discharged up to the standard.

Tungsten Hexachloride Application:

Used for tungsten plating by vapor deposition; used to prepare single crystal tungsten wire, conductive layer on glass surface; used as olefin polymerization catalyst; used for tungsten purification and organic synthesis; widely used in agriculture, chemical industry, petroleum catalysis and smart glass and other industries .

Tungsten Hexachloride Packaging:

25kg or 50kg net weight, packed in double-layer polyethylene plastic bags inside, and plastic drums/iron drums as outer packaging; vacuum packaging or other net weight requirements, or the order weight is less than the standard packaging specifications, customized according to the actual situation; conventional packaging is Product name + batch number and other neutral text printing//writing, if you need personalized content, you can also customize.

More product details please visit: tungsten-hexachloride.com


Spherical Tungsten Powder Price on DEC.23, 2022

spherical tungsten powder photo

Basic Trading Condition

Product Name

Spherical Tungsten Powder

Details

Purity:99.90%

Particle Size: 1~150um

Quantity:1,000.00KG

Price:390.00 USD/KG EXW, XIAMEN, CHINA

Payment: T/T in advance

Delivery Time: in 20 working days

Note: Re-check when quantity changed

Contact

Tel.:+86 592 512 9595  +86 592 512 9696

Fax.:+86 592 512 9797

Email:sales@chinatungsten.com

Business WeChat:

Disclaimer

The above quoted price is for reference only and shall not be used for final order. For detailed inquiry please contact us directly!

What Is Spherical Tungsten Powder?

Spherical tungsten powder is a kind of metal tungsten powder with spherical powder shape. It is the raw material for preparing tungsten processing materials, tungsten alloys and tungsten products.

Physical and Chemical Properties of Spherical Tungsten Powder:

Appearance is gray-black fine powder, melting point is about 3400 ℃, boiling point is about 5555 ℃, density is 19.3g/cm3 equivalent to gold, hardness is like diamond, reducibility is strong, purity is as high as 99.9%, bulk density is 11.6g/cm3, tapped Density 12.5g/cm3. Under normal circumstances, the higher the degree of spheroidization, the smaller the particle size and the narrower the particle size distribution of the powder, the better the powder flowability and the higher the bulk density.

Production Method of Spherical Tungsten Powder:

1) The product can be obtained by the secondary oxidation and re-reduction technology of tungsten powder.

2) Use the granulation and sintering method to produce spherical powder.

3) It can be prepared by rotating electrode DC arc plasma method.

4) Preparation of large particle powder from tungsten hexafluoride by vapor deposition method.

5) The ordinary tungsten powder is spheroidized and air-cooled with an inductively coupled plasma torch to obtain the product.

Spherical Tungsten Powder Application:

Spherical tungsten powder is the main raw material for the production of tungsten alloy, tungsten material and cemented carbide. W powder can be mixed with other metal powders to make tungsten alloy; W powder can be processed into tungsten materials such as tungsten rods, tungsten wires and tungsten bars; W powder can be made into tungsten carbide powder after carbon treatment, and tungsten carbide powder can be made into Cemented carbide tools such as milling cutters, drills and dies.

Spherical Tungsten Powder Packaging:

25kg or 50kg net weight, packed in double-layer polyethylene plastic bags inside, and plastic drums/iron drums as outer packaging; vacuum packaging or other net weight requirements, or the order weight is less than the standard packaging specifications, customized according to the actual situation; conventional packaging is Product name + batch number and other neutral text printing//writing, if you need personalized content, you can also customize.

For more information, please visit: http://spherical-tungsten-powder.com/


Tungsten Disulfide Price on DEC.23, 2022

tungsten disulfide photo

Basic Trading Condition

Product Name

Tungsten Disulfide

Details

Purity:99.90%

Particle Size: 1~25um

Quantity:1,000.00KG

Price:60.00 USD/KG EXW, XIAMEN, CHINA

Payment:T/T in advance

Delivery Time: in 20 working days

Note: Re-check when quantity changed

Contact

Tel.:+86 592 512 9595  +86 592 512 9696

Fax.:+86 592 512 9797

Email:sales@chinatungsten.com

Business WeChat:

Disclaimer

The above quoted price is for reference only and shall not be used for final order. For detailed inquiry please contact us directly!

What is Tungsten Disulfide?

Tungsten disulfide (WS2, Tungsten Disulfide) is a low-dimensional transition metal sulfide with a layered structure similar to that of graphene. It is widely used in optoelectronics, lubrication, and energy storage due to its good mechanical, thermal, optical and electrical reasons. , medical and other fields.

Physical Properties of Tungsten Disulfide:

Appearance is black gray powder, density 7.6g/cm3, slightly soluble in cold water, soluble in hot water, insoluble in inorganic acids, alkalis and alcohols except concentrated nitric acid and hydrofluoric acid mixture, but soluble in molten alkali. Because W in WS2 is in an intermediate valence state, it has strong reducing and oxidizing properties, and is easy to react with hot concentrated sulfuric acid, nitric acid, aqua regia and other strong oxidants to produce WO3 or WS3; in addition, heated to 1250 in vacuum ℃ will decompose into tungsten and sulfur.

Tungsten Disulfide Crystal Structure:

From a microscopic point of view, WS2 is a lamellar hollow sphere with a hexagonal crystal system. S-W-S molecular clusters form a hexagonal network on its surface, and the layers are connected by van der Waals forces and the layers are linked by W-S covalent bonds.

Preparation Method Of Tungsten Disulfide:

1. Roasting decomposition method: First react tungstic acid with ammonia water to generate ammonium tungstate, and then react with hydrogen sulfide gas to generate ammonium tetrathiotungstate, which is roasted at high temperature and decomposed into WS2.

2. Direct synthesis method: WS2 can be formed by passing sulfur vapor into red-hot tungsten.

In addition to the above two methods, there are hydrothermal synthesis method, high temperature solid phase synthesis method and so on.

Tungsten Disulfide Use:

1. As a lubricant, it is suitable for use in places with harsh working environments, mainly because tungsten disulfide has a low coefficient of friction, good compression resistance and oxidation resistance.

2. Used as energy storage electrode material. WS2 can significantly improve the electrochemical performance and safety of electrode materials due to its good electron transport rate and thermochemical stability.

3. It is used as a petroleum catalyst, because it has the characteristics of good cracking performance, stable and reliable catalytic activity, and long service life.

Tungsten Disulfide Packaging:

25kg or 50kg net weight, packed in double-layer polyethylene plastic bags inside, and plastic drums/iron drums as outer packaging; vacuum packaging or other net weight requirements, or the order weight is less than the standard packaging specifications, customized according to the actual situation; conventional packaging is Product name + batch number and other neutral text printing//writing, if you need personalized content, you can also customize.

For more information, please visit: http://tungsten-disulfide.com/


Violet Tungsten Oxide Price on DEC.23, 2022

Basic Trading Condition Product Name Violet Tungsten Oxide (Purple Tungsten Oxide) Details Purity:99.90% Particle Size: 12~20um Quantity:1,0...