发明授权
- 专利标题： Process for treating metal surfaces
- 专利标题（中）： 处理金属表面的方法
-
申请号： US12029729申请日： 2008-02-12
-
公开(公告)号： US09234283B2公开(公告)日： 2016-01-12
- 发明人: Todd R. Bryden , Jeng-Li Liang , Jianping Liu , John Zimmerman , Edis Kapic , Bruce Goodreau
- 申请人： Todd R. Bryden , Jeng-Li Liang , Jianping Liu , John Zimmerman , Edis Kapic , Bruce Goodreau
- 申请人地址： DE Duesseldorf
- 专利权人： Henkel AG & Co. KGaA
- 当前专利权人： Henkel AG & Co. KGaA
- 当前专利权人地址： DE Duesseldorf
- 代理商 Mary K. Cameron
- 主分类号： C23C22/06
- IPC分类号： C23C22/06 ; C23C22/34 ; C23C22/50 ; C23C22/73
摘要：
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.
公开/授权文献
- US20080280046A1 PROCESS FOR TREATING METAL SURFACES 公开/授权日：2008-11-13