| 摘要 |
PCT No. PCT/JP95/00856 Sec. 371 Date Dec. 18, 1996 Sec. 102(e) Date Dec. 18, 1996 PCT Filed Apr. 28, 1995 PCT Pub. No. WO95/30029 PCT Pub. Date Nov. 9, 1995This invention provides a self-lubricating composite material which has excellent strength and oxidation resistnce at a high temperature and can be used in air and in vacuum, and a production method thereof, the composite material is a Cu-Ni-Sn type composite sintered body containing 20 to 70 vol % of mixed particles of graphite and WS2 as the solid lubricant components and having a porosity of not greater than 25 vol %, and a matrix is a two-phase alloy comprising Cu-Ni alloy particles and an Sn single phase or an Sn-Ni intermetallic compound dispersed uniformly in the grain boundary of the alloy particles and firmly bonding them, and this matrix encompasses the solid lubricant particles. The matrix consists of 5 to 40 wt % of Ni, 4 to 15 wt % of Sn and the balance of Cu and unavoidable impurities as the alloy composition.
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