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Henri PASTOR: Ugicarb Morgon and Eurotungstène Poudres Laboratory Manager
INTRODUCTION
As tungsten is the most refractory of metals, consolidation techniques using arc melting or electron beam are relatively recent and limited to laboratories. Unfortunately, they result in a highly recrystallized metal that is exceptionally brittle at grain boundaries. As a result, current commercial production of wrought tungsten essentially relies on powder metallurgy techniques, a path brilliantly opened up for this metal by Coolidge in 1910.
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Properties of tungsten and its alloys
Extractive metallurgy
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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