发明名称 |
TREATMENT LIQUID FOR BLACK TRIVALENT CHROMIUM CONVERSION COATING, TRIVALENT CHROMIUM-CONTAINING WATER-SOLUBLE LIQUID FOR FINISHING TREATMENT, AND METHOD OF TREATMENT OF METAL SUBSTRATE |
摘要 |
Provided are a treatment liquid for a black trivalent chromium conversion coating, and a trivalent chromium-containing water-soluble liquid for finishing treatment, achieving excellent corrosion resistance and scratch resistance without containing a cobalt compound, with high stability and adequate consideration for environmental issues; and a method for treating a metal substrate using the same. The treatment liquid for a black trivalent chromium conversion coating on the surface of a metal substrate contains a trivalent chromium compound, two or more organic acids or organic acid salts, or one or more organic sulfur compounds, and nitrate ions, and contains no cobalt compound. |
申请公布号 |
EP3045564(A1) |
申请公布日期 |
2016.07.20 |
申请号 |
EP20160150099 |
申请日期 |
2016.01.04 |
申请人 |
NIPPON HYOMEN KAGAKU KABUSHIKI KAISHA |
发明人 |
SHINOZAKI, KAZUYUKI;KATORI, MITSUOMI;KANETA, HIROYUKI |
分类号 |
C23C22/53;C23C22/17;C23C22/40;C23C22/46;C23C22/83 |
主分类号 |
C23C22/53 |
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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