Preparation and ablation properties of Hf(Ta)C co-deposition coating for carbon/carbon composites
Preparation and ablation properties of Hf(Ta)C co-deposition coating for carbon/carbon composites
复制标题
DOI：
10.1016/j.corsci.2012.09.016
复制
发表时间：
2013
影响因子：
8.3
通讯作者：
Wang Yalei;X. Xiong;Guo-dong Li;Huaifei Liu;Z. Chen;Wei Sun;Xue-jia Zhao
中科院分区：
文献类型：
--
作者：
Wang Yalei;X. Xiong;Guo-dong Li;Huaifei Liu;Z. Chen;Wei Sun;Xue-jia Zhao
采用化学气相沉积法在碳/碳复合材料表面共沉积了连续、均匀的Hf（Ta）C涂层。研究了Hf（Ta）C涂层的相组成、显微结构和烧蚀性能。结果表明，所制备的涂层是由HfC和HfTaC 2组成的双相涂层。这种颗粒堆积结构可有效地制备无裂纹的Hf（Ta）C涂层，并使涂层与C/C复合材料之间具有良好的结合力。Hf（Ta）C涂层能有效地保护C/C复合材料免受烧蚀。60 s烧蚀后，涂层样品的质量烧蚀率和线烧蚀率分别为0.01 ± 0.02 mg cm-2s-1和0.46 ± 0.02 μm s-1。
Continuous, uniform Hf(Ta)C coating was co-deposited on carbon/carbon composites by chemical vapor deposition. The phase composition, microstructure and ablation properties of the Hf(Ta)C coating are investigated. Results show that the as-prepared coating is a biphasic coating consisting of HfC and HfTaC2. The particle-stacked structure is effective to produce a crack free Hf(Ta)C coating and good adhesion between the coating and C/C composites. The Hf(Ta)C coating can effectively protect C/C composites from ablation. After 60 s ablation, the mass and linear ablation rates of coated sample are 0.01 ± 0.02 mg cm−2s−1and 0.46 ± 0.02 μm s−1, respectively.