COMPOSITION AND METHOD FOR FLAME SPRAYING OF AIRTIGHT RARE-EARTH ENVIRONMENTAL-RESISTANT COATING

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PROBLEM TO BE SOLVED : To provide a rare-earth silicate-based airtight layer. SOLUTION : A rare-earth silicate-based airtight layer includes a flame-sprayed coating including rare-earth silicate having an airtight microstructure. An environmental-resistant coating includes a bond coating layer including silicon and at least one rare-earth silicate-based airtight layer deposited on the bond coating layer through flame spraying. The rare-earth silicate-based airtight layer includes a flame-sprayed coating including the rare-earth silicate having the airtight microstructure. An article for use in an extreme environment may have such an environment-resistant coating. Also, there is provided a flame spraying raw material for manufacturing the rare-earth silicate-based airtight layer. COPYRIGHT : (C)2016, JPO&INPIT