CU-PB system alloy composite bearing having overlay

Details CU-PB system alloy composite bearing having overlay CU-PB system alloy composite bearing having overlay

1992-12-02

1994-08-02

Walsh, Donald P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428553, 428554, 428562, 428564, 428565, 428674, 428676, 428677, 75231, 75244, 75246, 75247, B22F 704

Patent

active

053344600

ABSTRACT:
A Cu-Pb system composite bearing has three layers including a backing metal, a bearing alloy layer formed on the backing metal, and an overlay formed on the bearing alloy layer. The Cu-Pb bearing alloy contains 2 to 10% Ni and 0.05 to 1.0% B. An example of the composition of the Cu-Pb system bearing alloy consists of 0.5 to 8% Sn, 15 to 30% Pb, 0.2% or less P, 2 to 10% Ni, 0.05 to 1.0% B and the balance of Cu and unavoidable impurities. The Cu-Pb bearing alloy must have a hardness over HV80. Ni and B contained in the bearing alloy decrease the affinity of the Cu-Pb bearing alloy for tin in the overlay of a tin-containing lead alloy. The corrosion resistance of the bearing is improved by plating the both surfaces of the composite bearing with Sn, Pb or an alloy thereof.

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patent: 5132083 (1992-07-01), Takeda et al.

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