| 摘要 |
PURPOSE:To fulfill the function as a reflector for a long term, by depositing an alloy film mainly composed of nickel and phosphorus on the surface of the metallic mirror body by electroless plating. CONSTITUTION:An alloy film 12 chiefly composed of nickel and phosphorus is deposited on the metallic plate 11 such as a steel plate or a stainless steel plate by electroless plating to make a mirror body 1. In this case, one of the fabrication of the alloy plate 11 and the plating work may be done before the other. And a backing plate is fitted to the rearface of the mirror body 1. The alloy film 12 precipitates a nickel metal containing phosphorus by the reducing agent such as sodium hypophosphite from nickel ion by the electroless nickel plating. In this way, the reflectance of the mirror face is secured well and the corrosion resistance can be increased. |
