| 摘要 |
PROBLEM TO BE SOLVED: To provide a Cr-free tin-plated steel sheet which is capable of suppressing deterioration in appearance or decrease in adhesiveness to a coating material caused by oxidation of a tin-plated surface and can be inexpensively subjected to a chemical conversion treatment, and a method for producing the same. SOLUTION: The tin-plated steel sheet includes: a Sn-containing plating layer, formed on at least one surface of the steel sheet, having 0.05-20 g/m<SP>2</SP>Sn deposited per surface; a first chemical conversion coating film containing P and Sn formed on the Sn-containing plating layer, having 0.3-10 mg/m<SP>2</SP>P deposited per surface; a second chemical conversion coating film containing P and Al formed on the first chemical conversion coating film, having 1.2-10 mg/m<SP>2</SP>P and 0.24-8.7 mg/m<SP>2</SP>Al deposited per surface; and a layer treated by a silane coupling agent formed on the second chemical conversion coating film, having 0.10-100 mg/m<SP>2</SP>Si deposited per surface. COPYRIGHT: (C)2010,JPO&INPIT |
