| 摘要 |
PURPOSE:To obtain a sliding member having superior wear and fusion resistances by plating the sliding surface of a sliding member such as a piston ring with an Ni-W alloy contg. dispersed and coprecipitated fine hard Si3N4 particles. CONSTITUTION:The sliding surface of a piston ring for an internal-combustion engine is plated with an Ni-W alloy contg. 5-35vol.% dispersed and copresipitated fine hard Si3N4 powder of <=3mum particle size. The Ni-W alloy consists of 30-50wt.% W and the balance Ni. The plated piston ring is age- hardened, e.g., at 550 deg.C for 1hr and polished to produce a piston ring with a composite plating layer having superior wear and seizing resistances. |
