SURFACE TREATED STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AND METHOD FOR PRODUCING THE SAME
摘要
<p>A coated steel sheet having excellent corrosion resistance comprises: a zinc or a zinc alloy plated steel sheet or an aluminum or an aluminum alloy plated steel sheet; a composite oxide coating formed on the surface of the plated steel sheet; and an organic coating formed on the composite oxide coating. The composite oxide coating contains a fine particle oxide and a phosphoric acid and/or a phosphoric acid compound. The organic coating has thickness of from 0.1 to 5 mu m. <IMAGE></p>
