COPPER-BASED SINTERED SLIDING MEMBER

WIPO Patent Application WO/2011/024941

A2

Provided is a copper-based sintered sliding member that can be used in high-load usage environments. The provided copper-based sintered member, which is age-hardened, comprises 5-30% nickel, 5-20% tin, and 0.1-1.2% phosphorus by mass, with the remainder comprising copper and unavoidable impurities. Abrasion resistance is excellent due to the existence of an alloy phase, at grain boundaries, having higher nickel, phosphorus, and tin concentrations than the mean nickel, phosphorus, and tin concentrations across the entire sintered alloy. This results in reduced cost, as expensive hard particles are not needed, and allows a copper-based sintered sliding member that can be used in high-load usage environments. Even better abrasion resistance can be obtained by including 0.3-10% by mass of at least one of the following solid lubricants: graphite, graphite fluoride, molybdenum disulfide, tungsten disulfide, boron nitride, calcium fluoride, talc, and magnesium silicate mineral powder.

ISHII YOSHINARI (JP)
MARUYAMA TSUNEO (JP)
TAMURA YOSHIKI (JP)

PCT/JP2010/064565

March 03, 2011

August 27, 2010

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DIAMET CORP (JP)
ISHII YOSHINARI (JP)
MARUYAMA TSUNEO (JP)
TAMURA YOSHIKI (JP)

C22C9/06; B22F1/105; C22C1/04; C22C1/05; C22C9/02; C22C32/00; F16C33/10; F16C33/12

JP2008007796A	2008-01-17
JP2008019929A	2008-01-31
JP2004143580A	2004-05-20
JP2008007794A	2008-01-17
JPH03232905A	1991-10-16
JPS55145107A	1980-11-12
JPH05195117A	1993-08-03
JPS62156240A	1987-07-11
JP2009143772A	2009-07-02
JPH04183805A	1992-06-30

USHIKI, Mamoru (JP)
牛木 護 (JP)

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