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Crystalline tungsten powder 15-53µm
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Product Features
Classification:Metal Powders
Keywords: tantalum powder, tungsten powder
Product details
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
| Chemical Composition | |||||
| Element | Value (%) | Test Method | Element | Value (%) | Test Method |
| W | ≥99.9 | / | Si | ＜0.001 | ICP-AES |
| Cr | ＜0.01 | ICP-AES | Fe | ＜0.03 | ICP-AES |
| Other | ＜0.05 | ||||
| Gas Impurities | |||||
| Element | Value (%) | Test Standard | Element | Value (%) | Test Standard |
| C | ≤0.001 | GB/T4324-2012 | O | ≤0.025 | GB/T4324-2012 |
Physical properties
| Density （g/cm3) | Hall Flow Rate (s/50g) | |||
| Apparent Density | Tap Density | Test Standard | Value | Test Standard |
| ≥7.53 | ≥8.21 | GB/T 1479-1984 GB/T 5162-2006 | ≤20 | GB/T 1482-2010 |
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Stardust Technology (Guangdong) Co., Ltd.
101, Building 1, Liandong Youzhi Zone, Senshuji Road, Nansha Community, Danzao Town, Nanhai District, Foshan City,Guangdong Pro.,China
Tel：13318326187; 13378626726；
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