Title:
COBALT-BASED ALLOY POWDER, COBALT-BASED ALLOY SINTERED BODY, AND METHOD FOR PRODUCING COBALT-BASED ALLOY SINTERED BODY
Document Type and Number:
WIPO Patent Application WO/2020/179082
Kind Code:
A1
Abstract:
Provided are: a Co-based alloy powder that can provide a Co-based alloy material having mechanical properties at least equal to those of precipitation-strengthened Ni-based alloy materials; a Co-based alloy sintered body; and a method for producing a Co-based alloy sintered body. A Co-based alloy powder according to the present invention is characterized by containing 0.08 mass% to 0.25 mass% carbon, not more than 0.1 mass% boron, 10 mass% to 30 mass% chromium, not more than 5 mass% iron, and not more than 30 mass% nickel, wherein the sum of the iron and nickel is not more than 30 mass%; containing at least one of tungsten and molybdenum such that the sum thereof is 5 mass% to 12 mass%; containing at least one of titanium, zirconium, niobium, and tantalum such that the sum thereof is 0.5 mass% to 2 mass%; containing not more than 0.5 mass% silicon, not more than 0.5 mass% manganese, and 0.003 mass% to 0.04 mass% nitrogen; and containing cobalt and impurities for the balance.
Inventors:
WANG YUTING (JP)
IMANO SHINYA (JP)
IMANO SHINYA (JP)
Application Number:
PCT/JP2019/009207
Publication Date:
September 10, 2020
Filing Date:
March 07, 2019
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
C22C19/07; B22F1/05; C22F1/10; F28F21/08; C22F1/00
Domestic Patent References:
| WO2019031577A1 | 2019-02-14 |
Foreign References:
| JP2017186620A | 2017-10-12 | |||
| JP2016102229A | 2016-06-02 | |||
| CN107513642A | 2017-12-26 | |||
| JP2019049022A | 2019-03-28 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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