Copper alloy plate, copper alloy plate with plating film, and methods for producing these

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United States of America Patent

PATENT NO 11926889
APP PUB NO 20220316028A1
SERIAL NO

17630691

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Abstract

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A copper alloy plate containing in a center part of a plate thickness direction more than 2.0% (% by mass) and 32.5% or less of Zn; 0.1% or more and 0.9% or less of Sn; 0.05% or more and less than 1.0% of Ni; 0.001% or more and less than 0.1% of Fe, and 0.005% or more and 0.1% or less of P; and the balance Cu, including a surface layer part in which a surface Zn concentration in a surface is 60% or less of a center Zn concentration in the center part, having a depth from the surface to where Zn concentration is 90% of the center Zn concentration; and in the surface layer, the Zn concentration increases from the surface toward the center part in the plate thickness direction at a concentration gradient of 10% by mass/μm or more and 1000% by mass/μm or less.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI MATERIALS CORPORATION2-3 MARUNOUCHI 3-CHOME CHIYODA-KU TOKYO 1008117 ?1008117

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Funaki, Shinichi Aizuwakamatsu, JP 14 14
Maki, Kazunari Aizuwakamatsu, JP 74 205
Miyashima, Naoki Aizuwakamatsu, JP 7 9
Morikawa, Kenji Aizuwakamatsu, JP 30 175

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