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综述了柠檬酸及其盐作为缓蚀剂,电镀和化学镀镀液添加剂及其在金属防护膜中的应用状况。认为柠檬酸与其他缓蚀剂的缓蚀协同性研究是柠檬酸型缓蚀剂开发的重点,柠檬酸型配位剂是替代氰化物等有毒镀液添加剂的理想选择,在稀土等无铬转化膜中添加柠檬酸盐是改进稀土转化膜耐蚀性研究的一个方向。
The citric acid and its salts were reviewed as corrosion inhibitors, electroplating and electroless plating additives and their application in metal protective films. It is considered that the synergism of corrosion inhibition between citric acid and other corrosion inhibitors is the key point for the development of citric acid type corrosion inhibitor. Citric acid type complexing agent is an ideal alternative to toxic bath additives such as cyanide. Adding citrate into the film is one direction to improve the corrosion resistance of rare earth conversion coating.