Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Reexamination Certificate
2006-02-14
2006-02-14
Vo, Hai (Department: 1771)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
C428S307300, C428S307700, C428S314400, C428S319100, C428S689000, C428S697000, C428S698000, C428S699000
Reexamination Certificate
active
06998172
ABSTRACT:
A thermal barrier coating (TBC26) and method for forming the TBC (26) on a component (10) characterized by a stabilized microstructure that resists grain growth, sintering and pore coarsening or coalescence during high temperature excursions. The TBC (26) contains elemental carbon and/or a carbon-containing gas that increase the amount of porosity (32) initially within the TBC (26) and form additional fine closed porosity (32) within the TBC (26) during subsequent exposures to high temperatures. A first method involves incorporating elemental carbon precipitates by evaporation into the TBC microstructure. A second method is to directly incorporate an insoluble gas, such as a carbon-containing gas, into an as-deposited TBC (26) and then partially sinter the TBC (26) to entrap the gas and produce fine stable porosity within the TBC (26).
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Translation of JP 02-301550, Jiro Harada, “HIP treatment Method of Plasma-Flame Sprayed Ceramic Films,” Dec. 13, 1990. 6 pages.
Darolia Ramgopal
Johnson Curtis Alan
Movchan Boris A.
Nerodenko Leonella M.
Rudoy Yuriy E.
Hartman Domenica N.S.
Hartman Gary M.
Narcisco David L.
Vo Hai
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