| 摘要 |
PROBLEM TO BE SOLVED: To provide an inorganic/organic-composite-treated galvanized steel sheet which has a treatment film not containing a harmful chromate and is excellent in corrosion resistance and coating film adhesiveness after alkali degreasing. SOLUTION: The inorganic/organic-composite-treated galvanized steel sheet comprises a galvanized steel sheet, a zinc phosphate treatment film formed on the surface of the galvanized steel sheet and having a film weight of 0.3-5 g/m<SP>2</SP>, and a post-treatment film formed on the zinc phosphate treatment film, having a film weight of 0.01-1 g/m<SP>2</SP>, and containing an organic resin (A), a zirconium compound (B), an inorganic rust-preventive agent (C) and an organic rust-preventive agent (D). COPYRIGHT: (C)2004,JPO&NCIPI
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