发明名称 |
Self-deposited coatings on magnesium alloys |
摘要 |
Some articles such as automobile components that have been constructed from steel and/or aluminum alloy parts are now being fitted with magnesium parts whose surfaces may need to be protected against corrosion. To do this an e-coating pre-film may be formed on the part's magnesium surfaces by exposing it to a conventional e-coating emulsion. And there is no need to supply a current or potential to the part or component. Magnesium's high reactivity with acidic or neutral aqueous mediums is itself a sufficient driving force to facilitate the deposition of an e-coating pre-film. At the same time any steel or aluminum alloy parts will remain unaffected. The article with a protective e-coating pre-film formed solely on its magnesium surfaces may now be advanced through a paint-line that includes conventional processes aimed at treating the component's steel and aluminum alloy parts. The process may be practiced where the magnesium surface comprises a magnesium-containing conversion or anodized coating. |
申请公布号 |
US8192801(B2) |
申请公布日期 |
2012.06.05 |
申请号 |
US20090362499 |
申请日期 |
2009.01.30 |
申请人 |
SONG GUANGLING;WANG YAR-MING;KUO HONG-HSIANG;GM GLOBAL TECHNOLOGY OPERATIONS LLC |
发明人 |
SONG GUANGLING;WANG YAR-MING;KUO HONG-HSIANG |
分类号 |
C25D13/00 |
主分类号 |
C25D13/00 |
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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