镀铜——Mil-C-1 4550这是一种由无光泽变为十分光亮的光制,当镀铜层作为底层时具有良好的抗蚀性。有几种有效的镀铜方法:(1)光亮镀铜(不需用软皮擦光);(2)高速镀铜(电成形用);(3)细粒镀铜(防止硬化)。用途:第一种,防止渗碳:保护铜焊。第二种,用作镀镍和镀其他金属的底层。第三种和第四种,防止基体金属迁入锡。 Copper Plating - Mil-C-1 4550 This is a glossy, matte finish that has good corrosion resistance when used as a base. There are several effective methods for copper plating: (1) bright copper plating (no need for buffing); (2) high speed copper plating (for electroforming); (3) fine copper plating (to prevent hardening). Uses: The first, to prevent carburizing: protection of brazing. The second, used as a base layer for nickel plating and other metal plating. The third and fourth, to prevent the base metal to move into the tin.