Abstract ZrB2–SiC composite coating with HfB2-WC as additives was successfully manufactured on graphite substrate by spark plasma sintering method. The effect of HfB2 and WC on coating properties was investigated. The microstructure, phase changes and ablation resistance of the coatings were studied. Results showed that composite coatings with the thickness of 500 μm and penetration depth of 250 μm were obtained for all samples. Results of the oxyacetylene flame test showed that the ablation resistance of the coated graphite was significantly increased. The minimum ablation weight percentage and rate of 2% and 3 mg s−1 were obtained for the composite coating with 3.75% of each additive.

中文翻译：

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HfB2和WC添加剂对SPS制备ZrB2-SiC复合涂层耐烧蚀性的影响

摘要 采用放电等离子烧结法在石墨基体上成功制备出以HfB2-WC为添加剂的ZrB2-SiC复合涂层。研究了 HfB2 和 WC 对涂层性能的影响。研究了涂层的微观结构、相变和抗烧蚀性。结果表明，所有样品均获得了厚度为 500 μm、穿透深度为 250 μm 的复合涂层。氧乙炔火焰试验结果表明，涂​​层石墨的抗烧蚀性显着提高。对于具有 3.75% 的每种添加剂的复合涂层，获得了 2% 和 3 mg s-1 的最小烧蚀重量百分比和比率。