Abstract An oxidation protective SiC-ZrB2-ZrSi2 coating with mosaic structure was designed to improve the oxidation resistance of carbon/carbon composites by a combined method of hydrothermal electrophoretic deposition and pack cementation. The phase composition, microstructure, thermal shock resistance and oxidation protective ability of the coating were investigated. Results show that the as-prepared SiC-ZrB2-ZrSi2 coating was dense and crack-free. After 50 thermal cycles between 1773 K and room temperature, the weight gain of the coated samples was 15.2 g m−2. The weight loss of the coated samples was only 15.6 g m−2 after oxidation in air at 1773 K for 580 h. The good thermal shock resistance and oxidation protective ability of the coated samples were attributed to the synergetic effect of the glass layer protection, compressive stress restraint and pinning role of ZrSiO4 inlaid phase.

中文翻译：

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一种用于碳/碳复合材料的具有镶嵌结构的新型氧化保护SiC-ZrB 2 -ZrSi 2 涂层

摘要 为了提高碳/碳复合材料的抗氧化性，采用水热电泳沉积和填充胶结相结合的方法，设计了一种具有马赛克结构的氧化保护SiC-ZrB2-ZrSi2涂层。研究了涂层的相组成、微观结构、抗热震性和抗氧化能力。结果表明，所制备的 SiC-ZrB2-ZrSi2 涂层致密且无裂纹。在 1773 K 和室温之间进行 50 次热循环后，涂层样品的重量增加为 15.2 g m-2。在 1773 K 空气中氧化 580 小时后，涂层样品的重量损失仅为 15.6 g m-2。涂层样品良好的抗热震性和抗氧化能力归因于玻璃层保护的协同作用，