| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-chromate electrogalvanized steel sheet excellent in stain resistance, and a production method thereof. <P>SOLUTION: The electrogalvanized steel sheet has an electrogalvanized layer and a resin coating film which is formed on the electrogalvanized layer and contains substantially no Cr and 0.05-5 mass% Na. The electrogalvanized layer comprises, in terms of atom, (A) 60-3,000 ppm Fe and (B) at least one element chosen from the group consisting of Ni, Cr, Mo, Sn, Cu, Cd, Ag, Si, Co, In, Ir and W, wherein elements in (B) comprise 60-6,000 ppm Ni, 0.5-5 ppm Cr, 5-500 ppm Mo, 0.6-20 ppm Sn, 8-3,000 ppm Cu, 0.0001-0.02 ppm Cd, 1.0-400 ppm Ag, 30-2,000 ppm Si, 0.0003-0.3 ppm Co, 0.1-30 ppm In, 0.01-10 ppm Ir and 0.1-50 ppm W. <P>COPYRIGHT: (C)2009,JPO&INPIT |
