发明名称 |
CHROMATIERTES VERZINKTES STAHLBAND UND VERFAHREN ZUR HERSTELLUNG. |
摘要 |
<p>A chromate-treated steel strip comprising a chromate film on a zinc plated steel strip is improved in corrosion resistance and coating adherence by forming the chromate film of three layer structure consisting of a metallic Cr layer, a Cr<3><+> oxide layer, and an outermost surface layer of SiO2 and Cr<3><+> oxide plus Cr<6><+> oxide. The three layered chromate film is deposited on a zinc plated steel strip by effecting cathodic electrolysis in a bath containing hexavalent chromium, colloidal silica, optional alumina sol, and a fluoride, by supplying electricity at a specific current density to a controlled quantity.</p> |
申请公布号 |
DE3778968(D1) |
申请公布日期 |
1992.06.17 |
申请号 |
DE19873778968 |
申请日期 |
1987.02.24 |
申请人 |
KAWASAKI STEEL CORP., KOBE, HYOGO, JP |
发明人 |
TAKEUCHI, YUKO C/O TECHNICAL RESEARCH DIVISIO;NAKAHARA., YUKI C/O TECHNICAL RESEARCH DIVISION;KIMURA, HAJIME C/O TECHNICAL RESEARCH DIVIS;OKANO, SHINOBU C/O TECHNICAL RESEARCH DIVI, CHIBA-SHI CHIBA, JP |
分类号 |
C25D11/38;C23C28/00;C25D5/10;C25D15/00;(IPC1-7):B32B15/18 |
主分类号 |
C25D11/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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