Process for surface treating aluminum or aluminum alloy and article made with same
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United States of America Patent
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Oct 7, 2014
Grant Date -
Jul 5, 2012
app pub date -
Jul 27, 2011
filing date -
Dec 30, 2010
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Abstract
A process for surface treating aluminum or aluminum alloy comprises the following steps. Providing a substrate made of aluminum or aluminum alloy. The substrate is treated with a chemical conversion treatment solution containing molybdate as the main film forming agent, to form a molybdate conversion film on the substrate. Then, a ceramic coating comprising refractory compound is formed on the molybdate conversion film by physical vapor deposition.
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