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Title:
METHOD FOR PRODUCING METAL POWDER
Document Type and Number:
WIPO Patent Application WO/2018/092664
Kind Code:
A1
Abstract:
The purpose of this invention is to provide a method with which it is easy to produce, using atomized spray pyrolysis, a metal powder having a uniform and homogeneous vitreous thin film over the entire surface of the metal powder, without only part of the metal powder being coated with the vitreous thin film, regardless of the type of metal used. This method for producing metal powder is a method for producing a metal powder in which a vitreous substance is generated near the surface of the metal powder by subjecting, to atomized spray pyrolysis, a liquid solution comprising a heat-decomposable metal compound and a glass precursor that generates a vitreous substance which does not dissolve with the metal generated from the metal compound when the metal powder undergoes pyrolysis to produce a metal powder provided with a vitreous thin film on the surface thereof. The glass precursor is prepared in such a manner that the melting point TmM of the metal and the liquidus temperature TmG of the vitreous composite oxide satisfy formula (1). Formula (1): -100(°C)≤(TmM–TmG)≤500(°C)

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Inventors:
IWASAKI MINETO (JP)
KIMURA TETSUYA (JP)
Application Number:
PCT/JP2017/040351
Publication Date:
May 24, 2018
Filing Date:
November 09, 2017
Export Citation:
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Assignee:
SHOEI CHEMICAL IND CO (JP)
International Classes:
B22F9/30; B22F1/16; B22F1/065
Domestic Patent References:
WO2005015581A12005-02-17
Foreign References:
JPH10330802A1998-12-15
JPH11124602A1999-05-11
JPH1171601A1999-03-16
JP2007126750A2007-05-24
JP4452240B22010-04-21
JP2014192454A2014-10-06
JPH09256005A1997-09-30
JP2003049203A2003-02-21
JPS6331522B21988-06-24
JPH06172802A1994-06-21
JPH06279816A1994-10-04
JPH10330802A1998-12-15
JP3206496B22001-09-10
Other References:
See also references of EP 3542932A4
Attorney, Agent or Firm:
SAKAI, Masami et al. (JP)
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