COPPER-BASED MIXED POWDER FOR POWDER METALLURGY

• Main Author: SHINOHARA SHO
• Format: Patent
• Language: English; Japanese
• Published: 18.05.2022
• Subjects: ALLOYS; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

To provide a copper-based mixed powder for powder metallurgy, which contains Si and Ni and/or Co, exhibits high sinterability in an inert atmosphere, can produce a Cu-(Ni, Co)-Si based alloy sintered compact by a general sintering method, and can be adjusted to desired strength and conductivity by an aging treatment after sintering.SOLUTION: A copper-based mixed powder for powder metallurgy is obtained by mixing an alloy powder (powder A) containing 0.2 wt.% or more and 6.0 wt.% or less of Si, the balance being Cu and inevitable impurities, and an alloy powder, a mixed powder or a simple powder (powder B) containing 30.0 wt.% or more of Ni and/or Co in total, and the balance being Cu and inevitable impurities. The mixed powder has a total content of Si of 0.2 wt.% or more and 6.0 wt.% or less, and a total content of Ni and/or Co of 0.8 wt.% or more and 40.0 wt.% or less.SELECTED DRAWING: None 【課題】Ｓｉと、Ｎｉ及び／又はＣｏを含有するが不活性雰囲気中で高い焼結性を示し、一般的な焼結方法によってＣｕ－（Ｎｉ,Ｃｏ）－Ｓｉ系合金焼結体を製造でき、また、焼結後の時効処理によって所望の強度や導電性に調整できる粉末冶金用銅系混合粉末に関する。【解決手段】Ｓｉを０．２重量％以上、かつ、６．０重量％以下含有し、残部がＣｕ及び不可避不純物からなる合金粉末（甲粉末）とＮｉ及び／又はＣｏを総計で３０．０重量％以上含有し、残部がＣｕ及び不可避不純物からなる合金粉末又は混合粉末又は単体粉末（乙粉末）とを混合してなり、Ｓｉの含有量が総計で０．２重量％以上、かつ、６．０重量％以下、Ｎｉ及び／又はＣｏの含有量が総計で０．８重量％以上、かつ、４０．０重量％以下である粉末冶金用銅系混合粉末。【選択図】なし