| 摘要 |
PURPOSE:To develop a gold color which is different from the color of titanium nitride or titanium carbonitride by coating titanium nitride or titanium carbonitride by an ion plating method and forming a zirconium nitride or zirconium carbonitride film. CONSTITUTION:A titanium nitride or titanium carbonitride layer of about 1mum thickness is formed on each of external parts for a watch as an underlayer by a reactive ion plating method. A zirconium nitride or zirconium carbonitride layer of about 0.1mum thickness is then formed as a finishing layer by said reactive ion plating method. |
