| 摘要 |
PURPOSE:To prevent an allergic reaction at the time of wear of personal ornaments without deteriorating the adhesion or corrosion resistance at all as compared with the case of Pd-Ni plating by substituting Cu for Ni in conventional Pd alloy plating. CONSTITUTION:When Pd alloy plating having white appearance is formed on each of personal ornaments, the compsn. of the plating is composed of 50-95% Pd and 2-50% Cu. The Cu content. is preferably regulated to <=30%. The Pd-Cu alloy plating may have a metal and/or Cu alloy plating layer as an underlayer and a plating layer for protection and ornamentation may further be formed on the top of the Pd-Cu alloy plating. |
