| 等离子喷涂制备ZrB2/SiC/Ta2O5涂层抗烧蚀性能研究 |
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| 引用本文： | 柳彦博,郭嘉仪,马 壮,孙世杰,栾兴涛. 等离子喷涂制备ZrB2/SiC/Ta2O5涂层抗烧蚀性能研究[J]. 稀有金属材料与工程, 2018, 47(S1): 72-77 |
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| 作者姓名： | 柳彦博 郭嘉仪 马 壮 孙世杰 栾兴涛 |
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| 作者单位： | 北京理工大学 冲击环境材料技术重点实验室,北京理工大学 冲击环境材料技术重点实验室,北京理工大学 冲击环境材料技术重点实验室,北京理工大学 冲击环境材料技术重点实验室,111111 |
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| 摘 要： | 为了提高C/C复合材料的抗烧蚀性能,通过等离子喷涂法在C/C表面制备了SiC/Al2O3内层和ZrB2/SiC/Ta2O5外层的双层涂层,通过XRD,SEM和EDS分析了涂层烧蚀前后的物相组成、微观结构和成分分布。烧蚀前涂层表面没有裂纹并且内层与基体、内层与外层之间结合良好。元素Zr、Si、Ta在涂层表面的分布相近,涂层表面成分分布均匀性良好。通过氧乙炔火焰在1800 ℃下对涂层的抗烧蚀性能进行考核。烧蚀过程中形成的镶嵌结构有利于阻挡氧气的渗入,Ta-Si-O玻璃层的形成封填了涂层孔隙,对基体有良好的保护效果,涂层表现出了较好的抗烧蚀性能。
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| 关 键 词： | C/C 烧蚀 镶嵌结构 Ta-Si-O玻璃层 |
| 收稿时间： | 2018-10-22 |
| 修稿时间： | 2018-10-22 |
Anti-ablation Property of ZrB2/SiC/Ta2O5 Coatings Prepared by Atmosphere Plasma Spraying |
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| Liu Yanbo,Guo Jiayi,Ma Zhuang,Sun Shijie and Luan Xingtao. Anti-ablation Property of ZrB2/SiC/Ta2O5 Coatings Prepared by Atmosphere Plasma Spraying[J]. Rare Metal Materials and Engineering, 2018, 47(S1): 72-77 |
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| Authors: | Liu Yanbo Guo Jiayi Ma Zhuang Sun Shijie Luan Xingtao |
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| Affiliation: | National Key Laboratory of Science and Technology on Materials under Shock and Impact,Beijing Institute of Technology,National Key Laboratory of Science and Technology on Materials under Shock and Impact,Beijing Institute of Technology,National Key Laboratory of Science and Technology on Materials under Shock and Impact,Beijing Institute of Technology,National Key Laboratory of Science and Technology on Materials under Shock and Impact,Beijing Institute of Technology,China Ordnance Industrial Standardization Research Institute |
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| Abstract: | To improve the anti-ablation property of carbon/carbon (C/C) composites, the double-layer coatings with SiC/Al2O3 as an inner layer and ZrB2/SiC/Ta2O5 as an outer layer were prepared by atmosphere plasma spraying. The phase composition, microstructure and element distribution of the coatings before and after ablation were analyzed using X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy, respectively. There are no cracks on the surface coating and the connection of two coatings and the SiC/Al2O3 coating with substrate is well. The distribution of elements Zr, Si and Ta on the coating are similar, which indicates the good homogeneity of coating. Ablation resistance of coated C/C was tested by the oxyacetylene flame at 1800 °C. The mosaic structure formed during the ablation process is conducive to prevent the diffusion of O2, and the Ta-Si-O glassy layer formed on the surface coating has a protective effect. The coating exhibits a good anti-ablation ability. |
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| Keywords: | C/C ablation mosaic structure Ta-Si-O glassy layer |
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