Ngk Insulators, Inc.

Tohoku University

Hirokazu Katsui

Naokuni Muramatsu

Takashi Goto

Takanari Nakajima

Masaaki Akaiwa

A conductive supporting member includes an outer portion that includes a Cu matrix phase and a second phase dispersed in the Cu matrix phase and containing a Cu&#x2014;Zr compound and that has an alloy composition represented by Cu-xZr (x is atomic % of Zr and 0.5&#x2264;x&#x2264;16.7 is satisfied) and an inner portion that is present on an inner side of the outer portion, is formed of a metal containing Cu, and has higher conductivity than the outer portion.

Conductive supporting member and method for producing the same

A method for manufacturing a copper alloy according to the present invention comprises (a) weighing a copper powder and one of a Cu&#x2014;Zr master alloy and a ZrHpowder such that an alloy composition of Cu-xZr (x is the atomic % of Zr, and 0.5&#x2264;x&#x2264;8.6 is satisfied) is obtained and pulverizing and mixing the copper powder and the one of the Cu&#x2014;Zr master alloy and the ZrHpowder in an inert atmosphere until an average particle diameter D50 falls within the range of from 1 &#x3bc;m to 500 &#x3bc;m to thereby obtain a powder mixture; and (b) subjecting the powder mixture to spark plasma sintering by holding the powder mixture at a prescribed temperature lower than eutectic temperature while the powder mixture is pressurized at a pressure within a prescribed range.

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Sendai, Japan

Hirokazu Katsui