CHEMICAL CONVERSION COATING AGENT AND SURFACE-TREATED METAL

摘要

It is an object of the present invention to provide a chemical conversion coating agent whit. places a less burden on the environment and can apply good chemical conversion treatment to all metals such as iron, zinc and aluminum. A chemical conversion coating agent comprising: at least one kind selected from the group consisting of zirconium, titanium and hafnium; fluorine; and an adhesion and corrosion resistance imparting agent, wherein said adhesion and corrosion resistance imparting agent is at least one kind selected from the group consisting of: 1 to 5000 ppm (metal ion concentration) of at least one kind of metal ion (A) selected from the group consisting of zinc ion, manganese ion and cobalt ions; 1 to 5000 ppm (metal ion concentration) of alkaline earth metal ion (B); 1 to 5000 ppm (metal ion concentration) of metal ion (C) of Group III in the periodic tables; 0.5 to 100 ppm (metal ion concentration) of copper ion (D) ; and 1 to 5000 ppm (as a silicon component) of a silicon-containing compound (E). 30