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1. (WO2018034551) METHOD FOR PREPARING METAL COMPOSITE AND METAL COMPOSITE PREPARED THEREBY

Pub. No.:    WO/2018/034551    International Application No.:    PCT/KR2017/009063
Publication Date: Fri Feb 23 00:59:59 CET 2018 International Filing Date: Sat Aug 19 01:59:59 CEST 2017
IPC: B22F 7/00
B22F 3/11
B22F 3/24
Applicants: RESEARCH COOPERATION FOUNDATION OF YEUNGNAM UNIVERSITY
영남대학교산학협력단
Inventors: HAN, Kwan Hee
한관희
PARK, Chang Geun
박창근
PARK, Kwang Deok
박광덕
PARK, Sung Min
박성민
HEO, Sung Ho
허성호
Title: METHOD FOR PREPARING METAL COMPOSITE AND METAL COMPOSITE PREPARED THEREBY
Abstract:
According to an embodiment of the present invention, provided is a method for preparing a metal composite, the method comprising: a mixing step for preparing a mixed powder containing a high-alloy steel powder having an average particle diameter of equal to or greater than 3 µm and equal to or smaller than 20 µm and a copper-containing powder having an average particle diameter of equal to or more than 1/10 to equal to or less than 1/2 the average particle diameter of the high-alloy steel powder; a kneading step for kneading the mixed powder and a thermoplastic organic binder to prepare a supply raw material; a molding step for molding the supply raw material to manufacture a molded body; a debindering step for removing the organic binder from the molded body; and a sintering step for, after the debindering step, sintering the molded body to manufacture a densified sintered body, wherein the carbon content in the high-alloy steel powder is equal to or more than 0.4 wt% and equal to or less than 2 wt%, and the weight ratio of the high-alloy steel powder and the copper-containing powder is 8:2 to 6:4.