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Title:
COPPER ALLOY MATERIAL, COMMUTATOR SEGMENT, AND ELECTRODE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2020/170956
Kind Code:
A1
Abstract:
The present invention provides a composition characterized by containing 0.3-0.7 mass% of Cr, 0.025-0.15 mass% of Zr, 0.005-0.04 mass% of Sn, 0.005-0.03 mass% of P, and the remainder comprising Cu and inevitable impurities, wherein Vickers hardness at 20°C is at least 149 Hv.

Inventors:
KUMAGAI SATOSHI (JP)
YANO SHOICHIRO (JP)
AKIYAMA YOSHIYUKI (JP)
Application Number:
PCT/JP2020/005731
Publication Date:
August 27, 2020
Filing Date:
February 14, 2020
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Assignee:
MITSUBISHI MATERIALS CORP (JP)
International Classes:
C22C9/00; C22F1/00; C22F1/08
Foreign References:
JPH0593230A1993-04-16
JPS6141751A1986-02-28
JP2019094530A2019-06-20
JP2017088949A2017-05-25
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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