Gas carburizing of tungsten carbide (WC) powder
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United States of America Patent
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Sep 10, 2002
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N/A
app pub date -
Dec 14, 1999
filing date -
Dec 28, 1998
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Expired
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Abstract
The invention concerns a gas carburizing method for production of fine-grained tungsten carbide (WC) powder in installations for fluidized bed reaction starting from free-flowing tungsten or tungsten oxide-containing powder with an average particle size d.sub.50 >10 .mu.m in a single process step with a specific process temperature and process gas mixture with a carbon activity <1 and as close as possible to 1. The method is suitable for particularly economical WC production on an industrial scale.
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