| 摘要 |
PURPOSE:To enhance the wear and seizing resistances by forming a melt-sprayed layer on the surface of the substrate by wire explosion spraying with a wire rod made of carbon steel, alloy steel or Cu alloy and by depositing hard powder, lubricative powder or the like on the surface of the melt-sprayed layer. CONSTITUTION:A melt-sprayed layer having about 5-25mum thickness is formed on the surface of the substrate of a sliding member by wire explosion spraying with a wire rod made of carbon steel, alloy steel or Cu alloy. Powder of a substance enhancing the wear resistance is then deposited on the surface of the sprayed layer. The substance enhancing the wear resistance includes a substance enhancing the wear resistance from the viewpoint of lubricity and a substance enhancing the wear resistance from the viewpoint of hardness. Graphite, activated carbon, lead or the like is used as the former, and Al2O3, SiO, ZrO2 or the like is used as the latter. It is preferable to form a composite melt-sprayed film by repeating said 2 stages. |
