| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a surface treatment composition for forming a surface treatment film superior in corrosion resistance, thermal discoloration resistance, blackening resistance, scratch resistance and adhesiveness with an organic resin layer which is formed on the treatment film as the upper layer, after forming, and to provide a surface-treated steel sheet. <P>SOLUTION: This surface treatment composition includes a titanium-containing aqueous liquid (A) which is obtained by mixing at least one titanium compound selected from the group consisting of a hydrolyzable titanium compound, a low condensate of a hydrolyzable titanium compound, titanium hydroxide, and a low condensate of titanium hydroxide, with hydrogen peroxide water, a zirconium carbonate compound (B), an organophosphate compound (C), a metal phosphate (D), silicon oxide (E), and a water-soluble organic resin and/or a water-dispersible organic resin (F), at a predetermined ratio. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
