PROCESS TO PRODUCE AN IRON PHOSPHATE CONVERSION COATING ON METALLIC SURFACES AND PROCESS TO PRODUCE AN IRON PHOSPHATE COATING ON FERROUS METAL SURFACE

摘要

A combination of accelerators, including an oxidizing agent such as a chlorate or a bromate, in conjunction with a reducing agent, particularly, hydroxylamine sulfate is used in phosphatizing ferrous metal at low temperature to produce an iron phosphate coating with good salt spray resistance.