초록 ▼

There are disclosed copper-base and/or iron-base contact materials which contain a Pb intermetallic compound dispersedly precipitated therein and which have highly improved sliding properties. Double layered contact elements improved in oil impregnation and lubricity are formed by sinter bonding the

There are disclosed copper-base and/or iron-base contact materials which contain a Pb intermetallic compound dispersedly precipitated therein and which have highly improved sliding properties. Double layered contact elements improved in oil impregnation and lubricity are formed by sinter bonding the above contact materials to an iron-base metal backing, respectively. Economical producing methods for such double layered contact materials are also disclosed. In the copper-base and/or iron-base contact materials, one or more kinds of Pb intermetallic compounds are dispersedly precipitated.

대표청구항 ▼

1. A method for producing a copper-base contact element by casting a copper-base contact material or by sintering a metal powder and/or alloy powder of the copper-base contact material under a reducing, neutral and/or vacuum atmosphere,said copper-base contact material being a Cu alloy containing 1

1. A method for producing a copper-base contact element by casting a copper-base contact material or by sintering a metal powder and/or alloy powder of the copper-base contact material under a reducing, neutral and/or vacuum atmosphere,said copper-base contact material being a Cu alloy containing 1 to 30 wt % Pb and at least 0.5 to 10 wt % of one or more elements selected from Ti and Mg which form a Pb intermetallic compound when reacting with Pb; and said copper-base contact material containing one or more alloy elements selected from Sn, Pb, Zn, Al, Si, P, Fe, Be, Ag, Mn and Cr.