| 摘要 |
PROBLEM TO BE SOLVED: To provide a plating film which has high hardness in a wide temperature range between room temperature and a high-temperature region, is superior in slidability and toughness and can be formed at a high speed, and to provide a machine component of which the sliding part is coated with the plating film, has the high hardness in the wide temperature range and is superior in the slidability. SOLUTION: The electroless-plated nickel film includes 1-50 mass% Co, 1-20 mass% W and 1-5 mass% P. The machine component has a sliding part. At least, the sliding part is coated with the film. The electroless plating bath includes Ni ions of 0.03 to 0.1 mol/L, Co ions of 0.01 to 0.05 mol/L, WO<SB>4</SB>ions of 0.01 to 0.05 mol/L and a phosphorus compound of 0.15 to 0.30 mol/L. COPYRIGHT: (C)2007,JPO&INPIT
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