| 摘要 |
PURPOSE:To improve the stripping resistance of the titanium compound layer of a sliding member having a plated hard layer and the titanium compound layer laminated on the surface of the base material by interposing a titanium layer whose coefft. of thermal expansion is between the coeffts. of thermal expansion of the laminated layers between the layers. CONSTITUTION:A plated hard layer 2 such as a plated hard chromium layer is formed on the surface 1a of a base material 1 of alloy cast iron or the like, and the surface 2a of the layer 2 is degreased, washed, and activated by ion bombardment. A titanium layer 3 is formed on the activated surface 2a by ion plating, and a layer 4 of a titanium compound such as titanium nitride is formed on the layer 3 by ion plating to obtain a sliding member whose sliding face is the surface 4a of the layer 4. In this method, the coefft. of thermal expansion of the layer 3 is set at a value between the coeffts. of thermal expansion of the layers 2, 4, and the thickness of the layer 3 is preferably adjusted to 0.5- 10mum. |
