ENVIRONMENTAL BARRIER COATINGS AND METHODS THEREFOR

An article includes a silicon-containing region including surface features on a surface thereof. The surface features include depressions, protuberances, or combinations thereof. At least one outer layer overlies the surface of the silicon-containing region. A constituent layer is provided on the su...

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Bibliographische Detailangaben
Hauptverfasser: LIPKIN, Don, Mark, SUNDARAM, Sairam, WAN, Julin, MESCHTER, Peter, Joel, JOHNSON, Curtis, Alan
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:An article includes a silicon-containing region including surface features on a surface thereof. The surface features include depressions, protuberances, or combinations thereof. At least one outer layer overlies the surface of the silicon-containing region. A constituent layer is provided on the surface of the silicon-containing region and between and contacting the silicon-containing region and the at least one outer layer. The constituent layer is formed by constituents of the silicon-containing region and is susceptible to creep within an operating environment of the article. The surface features physically interlock the at least one outer layer with the silicon-containing region through the constituent layer.