Method for treating titanium objects with a surface layer of mixed tantalum and titanium oxides
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United States of America Patent
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Apr 30, 2013
Grant Date -
Mar 4, 2010
app pub date -
Jul 13, 2007
filing date -
Jul 14, 2006
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Abstract
This invention introduces a method for treating a surface of an electrically conductive object with a refractory metal. In one embodiment, the refractory metal is tantalum and the object is a titanium substrate. A surface layer of mixed tantalum and titanium oxides is created by first heating the object and tantalum chloride in a reaction chamber and subsequently heat treating the object in an oxygen containing environment. The electrically conductive object can in a non-limiting way be DSA solutions (Dimensionally Stable Anodes), fuel cells or connector plates.
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