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2. Production. Implementation
2.1 Powder metallurgy
The quality of sintered products depends on the characteristics of the starting tungsten powder: purity, particle size, shape and porosity, lattice defects, specific surface area, particle size distribution, bulk density, tapped density, castability, compressibility.
SCROLL TO TOPCertain non-volatile substitution impurities are not eliminated during sintering and affect the ductility and workability of the metal (intergranular brittleness, recrystallization). The...
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Production. Implementation
Physical properties
References
Standardization
United States
American Society for Testing and Materials ASTM
- Test method for apparent density of powders of refractory metals and compounds by the Scott volumeter. - B 329-81 -
- Test method for average particle size of powders of refractory metals and compounds by the Fisher sub-sieve sizer. - B 330-82 -
- Test method for particle size distribution of refractory metal-type powders by turbidimetry....
Manufacturers. Suppliers
France
Tungsten powders and tungstic products
Eurotungstène Powders.
Heavy alloys and wrought tungsten
Cime BocuzeTungsten division.
Germany (Federal Republic of)
Tungsten powders and tungstic products
Starck Berlin Hermann C.
Austria
Tungsten powders and tungstic products
Wolfram...
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