我们在电镀时,常会遇到下列种种问题:例如镀银时溶解硝酸银作为镀银液,则阴极所得镀层是灰黑色且疏松的粒状或针状或叶片状的银晶粒,在硝酸银液中加入过量的氰化钾,使硝酸银溶解后的溶液作为镀银液,则阴极所得的镀层即为色泽洁白结构密致的银晶粒。镀锌时用硫酸锌作为镀液,则阴极所得镀层一 When we electroplating, we often encounter the following problems: For example, when silver is dissolved as a silver plating solution during plating, the resulting coating of the cathode is a gray-black and loose granular or acicular or leaf-like silver crystal grain, In excess potassium cyanide, silver nitrate solution after the solution as a silver plating solution, the cathode resulting coating is white and dense silver crystal structure. Galvanized zinc sulfate as a bath, the cathode obtained a coating