| 发明名称 |
PROCESS FOR TREATING METAL SURFACES |
| 摘要 |
<p>The corrosion resistance of a metal substrate surface treated with an acidic aqueous composition to form a conversion coating is improved by first contacting the surface with an oxidizing acidic pre-rinse, such as an aqueous solution of nitric acid and hydrogen peroxide, or nitric acid and hydrofluoric acid, or Fe+3 cations and hydrofluoric acid.</p> |
| 申请公布号 |
EP2094880(A4) |
申请公布日期 |
2011.08.17 |
| 申请号 |
EP20080725429 |
申请日期 |
2008.02.11 |
| 申请人 |
HENKEL AG & CO. KGAA |
发明人 |
BRYDEN, TODD, R.;LIANG, JENG-LI;LIU, JIANPING;ZIMMERMAN, JOHN;KAPIC, EDIS;GOODREAU, BRUCE |
| 分类号 |
C23C22/34;C23C22/00 |
主分类号 |
C23C22/34 |
| 代理机构 |
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代理人 |
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