| 摘要 |
PURPOSE:To obtain a reflection mirror causing no cracking in the protective oxide film even at high temp. by successively forming a heat resistant resin underlayer made of a specified heat resistant resin, a bright metallic film and a protective oxide film on a substrate in a contact state. CONSTITUTION:A heat resistant resin underlayer, a bright metallic film and a protective oxide film are successively formed on a substrate in a contact state to obtain a reflection mirror. The heat resistant resin of the heat resistant resin underlayer has 20-50kg/mm.<2> Young's modulus and <1.5X10<-4>/ deg.C expansion coefft. The substrate is formed by finishing a platelike material made of Al, an Al alloy, Fe or an Fe alloy to the prescribed shape of a reflection mirror by press forming, spinning or other method. SiO2 is used most practically as the bright metal of the bright metallic film from the viewpoint of transparency, safety and economical efficiency. |
