Invention Grant
- Patent Title: Coated, fine metal particles comprising titanium oxide and silicon oxide coating, and their production method
- Patent Title (中): 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
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Application No.: US12934589Application Date: 2009-03-26
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Publication No.: US08481115B2Publication Date: 2013-07-09
- Inventor: Hisato Tokoro , Takashi Nakabayashi , Shigeo Fujii
- Applicant: Hisato Tokoro , Takashi Nakabayashi , Shigeo Fujii
- Applicant Address: JP Tokyo
- Assignee: Hitachi Metals, Ltd.
- Current Assignee: Hitachi Metals, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2008-082668 20080327; JP2008-323827 20081219
- International Application: PCT/JP2009/056160 WO 20090326
- International Announcement: WO2009/119757 WO 20091001
- Main IPC: B32B5/16
- IPC: B32B5/16 ; B05D7/00 ; B05D7/14 ; B05D3/10

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.
Public/Granted literature
- US20110293940A1 COATED, FINE METAL PARTICLES AND THEIR PRODUCTION METHOD Public/Granted day:2011-12-01
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