Add time:08/04/2019         Source:sciencedirect.com

The oxidation resistance of ZrB2–SiC-based ultrahigh-temperature ceramic (UHTC) is remarkably enhanced by the addition of lanthanum hexaboride, which has demonstrated outstanding oxidation resistance to temperatures up to 2400 °C. The improved oxidation resistance is attributed to the formation of a coherent compact scale, which acts as an effective barrier against the inward diffusion of oxygen.

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