Most ceramic matrix composites (CMC’s) require a fiber interface coating in order to exhibit the desirable properties that make them potentially useful high temperature structural materials.6,9 Although interface coatings are widely recognized as a key to these properties, fiber coating technology has received relatively little attention, hindering successful application of CMC’s. Additionally, in today’s search for new oxidation resistant interfaces, the inability to deposit coatings of controlled chemistry, thickness, and morphology is a significant problem.5

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