HOT DUST RESISTANT ENVIRONMENTAL BARRIER COATINGS

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An environmental barrier coating system (300) for a component (400) of a gas turbine includes at least one rare earth disilicate layer (340) and at least one rare earth monosilicate layer (350). At least one of the at least one rare earth disilicate layer (340) or the at least one rare earth monosilicate layer (350) includes an alkaline earth oxide dopant.