Method of producing fine coated tungsten carbide particles
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United States of America Patent
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Nov 4, 2003
Grant Date -
N/A
app pub date -
May 30, 2000
filing date -
Jun 3, 1999
priority date (Note) -
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Abstract
Geldhart class C tungsten carbide particles are provided with a discontinuous coating of grain growth inhibitor. Further, the fine tungsten carbide coatings are preferably provided with a continuous coating of another discreet phase material, such as, for example, a continuous coating of cobalt. Compacts produced using such materials are particularly useful as WC--Co hardmetals wherein the compacts are extremely fine grained.
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