The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2018
Filed:
Apr. 23, 2015
Ngk Insulators, Ltd., Nagoya, JP;
Tohoku University, Sendai, JP;
Takashi Goto, Sendai, JP;
Hisamichi Kimura, Iwanuma, JP;
Akihisa Inoue, Sendai, JP;
Naokuni Muramatsu, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Tohoku University, Sendai-Shi, JP;
Abstract
A copper alloy of the present invention contains 5.00 to 8.00 atomic percent of Zr and includes Cu and a Cu—Zr compound, and two phases of the Cu and the Cu—Zr compound form a mosaic-like structure which includes no eutectic phase and in which when viewed in cross section, crystals having a size of 10 μm or less are dispersed. This copper alloy is formed by a manufacturing method including a sintering step of performing spark plasma sintering on a Cu—Zr binary system alloy powder at a temperature of 0.9 Tm ° C. or less (Tm(° C.): melting point of the alloy powder) by supply of direct-currant pulse electricity, the Cu—Zr binary system alloy powder having an average grain diameter of 30 μm or less and a hypoeutectic composition which contains 5.00 to 8.00 atomic percent of Zr. The Cu—Zr compound may include at least one of CuZr, CuZr, and CuZr.