Crystalline tungsten powder 15-53µm

Crystalline tungsten powder is a type of tungsten material, usually used in applications in high temperature and high pressure environments.

1. Features:

- High melting point: The melting point of tungsten is as high as 3422°C, the highest melting point of all metals, which makes crystalline tungsten powder have good stability under high temperature conditions.

- High density: The density of tungsten is close to 19.25 g/cm³, and the density of crystalline tungsten powder is also very high, so it can provide good strength and wear resistance in some applications.

- Excellent electrical and thermal conductivity: Tungsten has good electrical and thermal conductivity, which makes crystalline tungsten powder can effectively conduct heat in high temperature environments.

- Corrosion resistance: Tungsten itself has strong antioxidant and corrosion resistance, especially in vacuum or low oxygen environments.

- High hardness: Crystalline tungsten powder has high hardness and can withstand greater pressure and wear.

- Chemical stability: Under normal conditions, crystalline tungsten powder has good chemical stability and can withstand the erosion of most acids and alkalis.

2. Application fields:

- Electronic and electrical industry: Crystalline tungsten powder is often used to manufacture vacuum electronic devices, such as electron guns, hot cathodes, etc., due to its good conductivity and high temperature stability.

- High temperature materials: Crystalline tungsten powder is used in aerospace, nuclear industry and other fields, especially in parts that need to withstand extremely high temperatures, such as rocket nozzles and jet engine parts.

- Tungsten alloy: As the basic raw material of tungsten alloy, crystalline tungsten powder is often used to manufacture heavy metal alloys, which have important applications in aerospace, military and other fields.

- Hard materials: Tungsten powder can also be used to make cemented carbide, which is used in tools, drills and other fields with high wear resistance and high hardness.

- Coatings and catalysts: In some special industrial coatings and catalysts, crystalline tungsten powder is an important raw material that can provide additional hardness and high temperature resistance.

3. Preparation method:

- Reduction method: Tungsten powder is generated by the reduction reaction of tungsten oxides (such as tungstates or tungsten oxides) with hydrogen or carbon. This is a common method for preparing tungsten powder.

- Hydrogen reduction method: Tungstate or tungsten oxide is reduced in a hydrogen atmosphere to obtain high-purity tungsten powder. This method can effectively avoid the influence of oxygen.

- Electrolysis method: Tungsten powder is obtained by electrolysis of tungsten compounds in electrolyte. This method can control the particle size distribution of powder.

- Vapor deposition method: By introducing the vapor phase precursor of tungsten (such as tungsten chloride) into a high-temperature reaction chamber, a vapor phase reaction is carried out under appropriate temperature and pressure conditions to obtain crystalline tungsten powder.

- Mechanical alloying method: Tungsten is mixed with other materials by mechanical methods such as high-energy ball milling to obtain high-purity and uniformly distributed tungsten powder.

Chemical composition

Physical properties