Process for producing oxide coated fine metal particles
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United States of America Patent
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Jun 24, 2003
Grant Date -
N/A
app pub date -
Jan 31, 2000
filing date -
Jan 29, 1999
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Abstract
The oxide coated fine metal particles include fine core metal particles that are covered with a coating layer including an oxygen-containing compound of a dissimilar element that do not contain as a main component a metal element which is the main component of the fine core metal particles, or a complex oxide or a complex salt of the oxide, the complex oxide or the oxy-acid salt and an oxide of the metal element. A metal powder material is mixed with an oxide powder material of the oxygen-containing compound to obtain a powder material mixture. The powder material mixture is supplied into a thermal plasma to make a vapor-phase mixture and then the vapor-phase mixture is quenched to form the oxide coated fine metal particles comprising the fine core metal particles that are finer than the metal powder material and which are covered with the coating layer including the oxygen-containing compound.
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