| 摘要 |
A method for processing a metal surface is disclosed, in which two layered coatings consisting of a prime thin hard coating selected from chromium nitride,titanium nitride or titanium carbide and of a secondary thin coating selected from elemental metals and their corresponding alloys capable of dry-plating are provided on a metal material by an ion-plating process. An essential feature of the invention is to provide the secondary thin coating by means of the ion-plating process in the absence of an inert gas, such as an argon or helium gas, which is different from the conventional method for ion-plating the elemental metal in the presence of such inert gas. <IMAGE> |
