The coating corrosion was pitting corrosion in HCl solution and crevice corrosion in H_2SO_4,H_3PO4 and FeCl_3 solutions.

• 镀层在HCl溶液中的腐蚀属于点蚀,在H2SO4、H3PO4和FeCl3溶液中的腐蚀属于缝隙腐蚀。