Title:
METHOD FOR IMPROVING FLOWABILITY OF POWDER, AND METHOD FOR PRODUCING POWDER HAVING IMPROVED FLOWABILITY
Document Type and Number:
WIPO Patent Application WO/2021/167205
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a method for improving the flowability of a powder, in particular a metal or alloy powder produced through gas atomization; a method for producing a powder having improved flowability; and a powder having improved flowability produced thereby. To this end, the present invention provides a method for improving the flowability of a powder, the method comprising the steps of: preparing a powder by gas atomization using, as a raw material, a metal having a diffusion coefficient greater than that of nickel (Ni), or an alloy based on said metal; and heat-treating the prepared powder in a temperature range of 20-70% of the melting point of the raw material. According to the present invention, there are advantages in that a powder can be produced in large quantities through gas atomization, and powders of various metals can be produced. In addition, there is an effect that the produced powder has improved flowability despite being produced through gas atomization, and thus can be applied to various applications such as 3D printing.
Inventors:
CHOE JUNG-HO (KR)
KIM KYUNG-TAE (KR)
YANG SANG-SUN (KR)
YU JI-HUN (KR)
KIM KYUNG-TAE (KR)
YANG SANG-SUN (KR)
YU JI-HUN (KR)
Application Number:
PCT/KR2020/015711
Publication Date:
August 26, 2021
Filing Date:
November 10, 2020
Export Citation:
Assignee:
KOREA INSTITUTE OF MAT SCIENCE (KR)
International Classes:
B22F1/00; B22F1/142; B22F9/08
Foreign References:
| KR20190105371A | 2019-09-17 | |||
| JPH06264115A | 1994-09-20 | |||
| KR101517583B1 | 2015-05-07 | |||
| KR20080074638A | 2008-08-13 | |||
| KR20130078560A | 2013-07-10 |
Attorney, Agent or Firm:
LEE, Won Hee (KR)
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