Corrosion Resistance of SPCC, SPFC590, SPFC780 Steel by Organic/Inorganic Hybrid Solution (Case of different SiO2 polysilicate under a constant melamin)

: This study has developed an organic/inorganic hybrid solution according to amount of SiO 2 polysilicate, and the amount of melamine is constant. The three types of cold rolled steel were evaluated a corrosion resistance properties by using these solutions. US 3 M 3 and US 11 M 3 solutions were generate a lot of corrosion. US 7 M 3 solution was excellent in corrosion resistance, regardless of the steel type. The appearance of coating by US 3 M 3 and US 11 M 3 solutions were bumpy surface, and were a lot of fine defects. US 7 M 3 solution was made a sophisticated molecular cross-linking structure inside the coating, it was a slick surface. Other characteristics are exhibited the excellent property for all solutions.