Environmental and thermal barrier coating for ceramic components

   
   

A component comprises a silicon-based substrate; and a protective coating for the substrate. The protective coating includes tantalum oxide (Ta.sub.2 O.sub.5) and an additive for suppressing transformation from beta Ta.sub.2 O.sub.5 to alpha Ta.sub.2 O.sub.5.

Un componente abarca un substrato silicio-basado; y una capa protectora para el substrato. La capa protectora incluye el óxido del tantalio (Ta.sub.2 O.sub.5) y un añadido para suprimir la transformación de Ta.sub.2 beta O.sub.5 a la alfa Ta.sub.2 O.sub.5.

 
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