| 摘要 |
An inorganic-organic composite film is formed by coating a application liquid containing an inorganic component and an organic resin on a surface of a steel sheet, and baking the application liquid on the surface of the steel sheet. The application liquid contains phosphate as the inorganic component, and further contains an inorganic powder having a BET specific surface area of 10 m 2 /g or more and exhibiting a particle size distribution with a 50% cumulative particle size of 5 µm or less and with a 90% cumulative particle size of 15 µm or less when measured by a laser diffraction particle size analyzer, the powder being contained at a ratio of no less than 1 mass%, nor more than 50 mass% with respect to a solid content of the phosphate. |
