Cleaning and liquid contact with solids – Processes – For metallic – siliceous – or calcareous basework – including...
Patent
1998-07-30
2000-10-17
Warden, Jill
Cleaning and liquid contact with solids
Processes
For metallic, siliceous, or calcareous basework, including...
134 2217, 427331, 427404, 4274192, B08B 900, B05D 140, B05D 136, C03C 2300
Patent
active
061325201
ABSTRACT:
A gas turbine engine component having a thermal barrier coating is immersed in an inorganic hydroxide bath having a high concentration of alkali or alkaline earth hydroxide with the bath at ambient (atmospheric) pressure and elevated temperature for a time sufficient to effect rapid detachment of the thermal barrier coating for removal from the substrate. The component then optionally can be immersed in a water bath to remove any remaining thermal barrier coating. The thermal barrier coating is removed without detectable damage to the substrate or any bondcoat present thereon.
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Cockerill Joel L.
Murphy Kenneth S.
Schilbe John E.
Warnes Bruce M.
Howmet Research Corporation
Timmer Edward J.
Warden Jill
Wilkins Yolanda E.
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