USING THE CHANGES OF CORROSION POTENTIAL AND CURRENT TO STUDY THE GROWING PROCESS OF PHOSPHATING COATING
利用电流和电压的变化研究磷化膜的生长过程

It is a simple, quick convenient method to measeure the corrosion potential or/ and current changes in phosphating solutions for studying the growing process of the phosphating films.This method can be used to detect easily the behaviour of metal workpieces in various phosphating solutions during the whole process, so that to determine the optimum processing bine conveniently.