Turbine entrance temperatures in the latest high-efficiency jet engines rise to more than 1773 K, which significantly raises the bar for thermal barrier coatings (TBCs). This paper describes a ternary coating system consisting of a vacuum plasma sprayed NiCrAlY bond coat, an atmospheric plasma sprayed ZrO2 top coat, and a MoSi2 middle coat. The middle layer inhibits oxidation of the nickel-chromium bond coat, thus extending the service life of the TBC system. Paper includes a German-language abstract.

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