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首页> 外文期刊>Journal of Materials Engineering and Performance >ZrB2-SiC-Ta4HfC5/Ta4HfC5 Oxidation-Resistant Dual-Layer Coating Fabricated by Spark Plasma Sintering for C/C Composites
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ZrB2-SiC-Ta4HfC5/Ta4HfC5 Oxidation-Resistant Dual-Layer Coating Fabricated by Spark Plasma Sintering for C/C Composites

机译：ZRB2-SiC-TA4HFC5 / TA4HFC5通过火花等离子体烧结为C / C复合材料制造的耐氧化双层涂层

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摘要

In this work, a ZrB2-SiC-Ta4HfC5/Ta4HfC5 oxidation-resistant dual-layer coating was fabricated to improve the oxidation resistance of carbon-carbon (C/C) composites. The coating was prepared by pack cementation combined with the slurry paste method. Spark plasma sintering was used in the procedure. The as-prepared dual-layer coating was approximately 110m, and no distinct interface was observed between the coating and the matrix. The isothermal oxidation test results showed that the dual coating effectively prevented C/C composites from oxidizing. The weight loss of the coated samples was only 3.3 and 9.5% after oxidation at 1773K for 20h and ten thermal shock cycles between 1773K and room temperature in air, respectively. The pores and microcracks were the main reason for the failure of the coating.
机译：在这项工作中，制备ZRB2-SiC-TA4HFC5 / TA4HFC5抗氧化双层涂层，以改善碳 - 碳（C / C）复合材料的抗氧化性。 通过包装胶结加上浆料浆料法制备涂层。 在程序中使用火花血浆烧结。 制备的双层涂层约110m，在涂层和基质之间没有观察到不同的界面。 等温氧化试验结果表明，双涂层有效地防止了C / C复合材料氧化。 在1773K氧化下氧化在1773K的氧化下仅为3.3和9.5％，分别在1773k和室温下的10个热冲击循环中仅为3.3和9.5％。 毛孔和微裂纹是涂层失效的主要原因。

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