| abstract |
[PROBLEMS] A non-chromium surface treatment that is environmentally friendly, can be applied to a variety of materials, has excellent discoloration resistance even when used on tin-plated steel sheets, and has adhesion, adhesion, corrosion resistance, and dent resistance to organic resin coatings. A surface-treated metal plate excellent in various properties such as the above, and a surface treatment method for such a surface-treated metal plate are provided. A surface-treated metal plate 5 having an inorganic surface-treated layer 52 formed on the surface of a metal substrate 51 by depositing by cathodic electrolysis from an aqueous solution, wherein the inorganic surface-treated layer 52 is made of Al, It contains aluminum hydroxide or oxyhydroxide mainly composed of O and F. [Selection] Figure 5 |