Title:
METAL ALLOY POWDER AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2019/039773
Kind Code:
A1
Abstract:
The aim of the embodiments of the present invention is to provide a high purity metal alloy powder having a polygonal shape and a method for producing the same by using intergranular corrosion caused by sensitization. A method for producing a high purity metal alloy powder having a polygonal shape, according to one embodiment of the present invention, comprises the steps of: processing a metal alloy, which comprises, in percentage by weight, 0.001 to 5% of carbon (C), 50% or less (excluding 0) of chromium (Cr), and the balance being iron (Fe) and other unavoidable impurities, to have grains of an aspect ratio of 0.5 to 2.0; heat treating the metal alloy to form a sensitized structure; causing intergranular corrosion in the sensitized structure; and processing the sensitized structure affected by intergranular corrosion into powder.
Inventors:
LEE KYE-MAN (KR)
LEE JAE-HWA (KR)
KANG HYUNG-GU (KR)
PARK SOO-HO (KR)
KIM JONG-HEE (KR)
LEE JAE-HWA (KR)
KANG HYUNG-GU (KR)
PARK SOO-HO (KR)
KIM JONG-HEE (KR)
Application Number:
PCT/KR2018/008967
Publication Date:
February 28, 2019
Filing Date:
August 07, 2018
Export Citation:
Assignee:
POSCO (KR)
International Classes:
B22F1/00; B22F1/06; B22F1/142; B22F9/16; C22C38/18; C22C38/30; C22C38/40
Foreign References:
| JPH0368921B2 | 1991-10-30 | |||
| KR880002598A | 1988-05-10 | |||
| JPS53141157A | 1978-12-08 | |||
| JP2009542915A | 2009-12-03 | |||
| JP2010516896A | 2010-05-20 |
Attorney, Agent or Firm:
SELIM INTELLECTUAL PROPERTY LAW FIRM (KR)
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