Invention Grant
US08481115B2 Coated, fine metal particles comprising titanium oxide and silicon oxide coating, and their production method 有权
涂布的包含氧化钛和氧化硅涂层的金属微粒及其制造方法

Coated, fine metal particles comprising titanium oxide and silicon oxide coating, and their production method
Abstract:
A method for producing coated, fine metal particles each having a Ti oxide coating and a silicon oxide coating formed in this order on a metal core particle by mixing powder comprising TiC and TiN with oxide powder of a metal M meeting the relation of ΔGM-O>ΔGTiO2, wherein ΔGM-O represents the standard free energy of forming an oxide of the metal M; heat-treating the resultant mixed powder in a non-oxidizing atmosphere to reduce the oxide of the metal M with the powder comprising TiC and TiN, while coating the resultant metal M particles with Ti oxide; coating the Ti-oxide-coated surface with silicon oxide; and classifying the resultant particles such that they have a median diameter d50 of 0.4-0.7 μm, and a variation coefficient (=standard deviation/average particle size) of 35% or less, which indicates a particle size distribution range. Coated, fine metal particles each having a Ti oxide coating and a silicon oxide coating formed in this order on a metal core particle, which has a median diameter d50 of 0.4-0.7 μm, and a variation coefficient (=standard deviation/average particle size) of 35% or less, which indicates a particle size distribution range.
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