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COMPOSITIONS AND METHODS FOR THERMAL SPRA YING A HERMETIC RARE EARTH ENVIRONMENTAL BARRIER COATING
COMPOSITIONS AND METHODS FOR THERMAL SPRA YING A HERMETIC RARE EARTH ENVIRONMENTAL BARRIER COATING
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机译:热喷涂稀土环境屏障涂层的组合物和方法
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摘要
A rare earth silicate-based hermetic layer includes a thermal sprayed coating including a rare earth silicate having a hermetic microstructure. An environmental barrier coating includes a bond coat layer including silicon; and at least one rare earth silicate-based hermetic layer deposited on the bond coat layer by thermal spraying. The rare earth silicate-based hermetic layer includes a thermal sprayed coating including a rare earth silicate having a hermetic microstructure. An article for service in extreme environme nts may be provided with such an environmental barrier coating. A thermal spray feedstock for producing a rare earth silicate-based hermetic layer. Fig.2
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