PROCESS AND MECHANISM OF PHOSPHATING FOR GRAY CAST IRON
灰铸铁磷化过程及其机理研究

The regulation of nucleation and growth of phosphate film on gray cast iron was studied for the phosphating process with a bath of Zn-Ca system. The results indicate that phosphate film forms at first at the boundaries between ferrite and graphite. This phosphating process is a non-homogenous nucleation process, which needs an inocubation period.