ENVIRONMENTAL BARRIER COATING, ENVIRONMENTAL BARRIER COMPONENT WITH THE SAME, AND METHOD OF MANUFACTURING ENVIRONMENTAL BARRIER COATING

摘要

To provide an environmental barrier coating capable of maintaining excellent environmental barrier performance for a long period.SOLUTION: The present invention relates to an environmental barrier coating 10 which is formed on a base material 1 including a ceramic base composite material as a main component, and includes an outermost surface layer 2 and at least one intermediate layer 2 arranged between the base material 1 and outermost surface layer 2, wherein the outermost surface layer 2 is made of rare earth stabilized zirconia, and includes 95 mass% or more of ytterbia stabilized zirconia, and a first intermediate layer 3a in contact with the outermost surface layer 2 includes a rare earth compound which is at least one of rare earths stabilized zirconia and rare earth silicate, the content of ytterbium of the first intermediate layer 3a being 90 mol% or more for the whole rare earth in the first intermediate layer 3a.SELECTED DRAWING: Figure 1