IMPACT AND EROSION RESISTANT THERMAL AND ENVIRONMENTAL BARRIER COATINGS
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United States of America Patent
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Issued Date -
Apr 18, 2013
app pub date -
Oct 17, 2012
filing date -
Oct 17, 2011
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Abandoned
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Abstract
The present invention provides a process for the application of high temperature coating that provide enhanced impact resistance and erosion damage for the coatings. For high temperature coating systems that provide environmental protection to silicon based ceramics, the process provides the deposition of a silicon-based bond coat on the substrate using the directed vapor deposition with plasma activation and at least one supersonic gas jet nozzle. The process provides the deposition of an EBC layer using the directed vapor deposition with the gas jet nozzle. In one embodiment, the thermal barrier layer may also contain one or more dense embedded layers which further promote impact resistance. Within the process, the particular layers, silicon bond coat, EBC layer and/or TBC layer may be deposited together or specific novel layers applied in combination with other layers deposited using prior known deposition techniques.
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