APPARATUS AND METHODS FOR REMOVING TUNGSTEN-CONTAINING COATINGS FROM A METAL COMPONENT
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United States of America Patent
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Issued Date -
Dec 14, 2006
app pub date -
Jun 9, 2006
filing date -
Jun 10, 2005
priority date (Note) -
Abandoned
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Abstract
Apparatus and methods for removing tungsten-containing coatings from metal components, such as metal components used in aircraft and other aerospace vehicles. The metal component is DC coupled with a counter electrode and immersed in an aqueous bath that includes an active oxygen source and a ligand in a composition effective to remove the tungsten-containing coating. The aqueous bath may be maintained at a pH greater than about 7.0 and less than or equal to about 8.0. A sensor may be provided to periodically monitor the oxidation reduction potential of the aqueous bath. Another sensor may be provided to periodically monitor the pH of the aqueous bath.
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