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COMPOSITE ARTICLE HAVING SILICATE BARRIER LAYER AND METHOD THEREFOR

2025-06-20 06:553040下载
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A method of processing a composite article includes controlling a preheat temperature of a workpiece to be less than 700° C./1292° F. The workpiece includes a substrate and a bond coat that is disposed on the substrate. With the workpiece at the preheat temperature, deposition of a barrier layer onto the bond coat is commenced. The barrier layer includes a rare earth silicate material having a rare earth element selected from lanthanide series elements, yttrium, scandium and combinations thereof.


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