Thermally-stabilized thermal barrier coating and process therefor
A thermal barrier coating (TBC 26 ) 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 c...
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| creator | Movchan, Boris Rudoy, Yuriy Nerodenko, Leonella Darolia, Ramgopal Spitsberg, Irene Thompson, Anthony Johnson, Curtis Wortman, David |
| description | A thermal barrier coating (TBC
26
) 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
). |
| format | Patent |
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26
) 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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26
) 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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26
) 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
).</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_uspatents_applications_20030129378 |
| source | USPTO Published Applications |
| title | Thermally-stabilized thermal barrier coating and process therefor |
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