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公开(公告)号：US11511368B2
公开(公告)日：2022-11-29
申请号：US16884502
申请日：2020-05-27
摘要： An electrically conductive tip member includes: an inner periphery portion including a Cu matrix phase and a second phase that is dispersed in the Cu matrix phase and contains a Cu—Zr-based compound, the inner periphery portion having an alloy composition of Cu-xZr (where x is the atomic percentage of Zr and satisfies 0.5≤x≤16.7); and an outer periphery portion that is present on an outer circumferential side of the inner periphery portion, made of a metal containing Cu, and has higher electrical conductivity than the inner periphery portion.
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公开(公告)号：US10557184B2
公开(公告)日：2020-02-11
申请号：US15356960
申请日：2016-11-21
摘要： A method for manufacturing a copper alloy according to the present invention comprises (a) weighing a copper powder and one of a Cu—Zr master alloy and a ZrH2 powder such that an alloy composition of Cu-xZr (x is the atomic % of Zr, and 0.5≤x≤8.6 is satisfied) is obtained and pulverizing and mixing the copper powder and the one of the Cu—Zr master alloy and the ZrH2 powder in an inert atmosphere until an average particle diameter D50 falls within the range of from 1 μm to 500 μm 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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公开(公告)号：US10017840B2
公开(公告)日：2018-07-10
申请号：US14694038
申请日：2015-04-23
CPC分类号： C22C9/00 , B22F3/105 , B22F3/24 , B22F9/08 , C22C1/0425 , C22C1/0491 , C22F1/08 , H01B1/026 , H01B13/00
摘要： 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 Cu5Zr, Cu9Zr2, and Cu8Zr3.
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公开(公告)号：US11608545B2
公开(公告)日：2023-03-21
申请号：US16394026
申请日：2019-04-25
摘要： 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—Zr compound and that has an alloy composition represented by Cu-xZr (x is atomic % of Zr and 0.5≤x≤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.
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