无机材料学报2025，Vol.40Issue(10)：1119-1128,10.DOI:10.15541/jim20240538
SiC过渡层对SiC/SiC陶瓷基复合材料表面MoSi2-SABB涂层结合性能的影响
Effect of SiC Transition Layer on Bonding Properties of MoSi2-SABB Coating on SiC/SiC Ceramic Matrix Composites
曹路涵 1孟佳 2薛玉冬 3盛晓晨 2崔苑苑 4乐军 2宋力昕1
作者信息
- 1. 中国科学院上海硅酸盐研究所,中国科学院特种无机涂层重点实验室,上海 200050||中国科学院大学材料科学与光电工程中心,北京 100049
- 2. 中国科学院上海硅酸盐研究所,中国科学院特种无机涂层重点实验室,上海 200050
- 3. 中国科学院上海硅酸盐研究所,关键陶瓷材料全国重点实验室,上海 200050||中国科学院上海硅酸盐研究所,结构陶瓷与复合材料工程研究中心 上海 200050
- 4. 上海大学材料科学与工程学院,上海 200444
- 折叠
摘要
Abstract
SiC/SiC ceramic matrix composites(SiC/SiC CMCs)are expected to be used in the thermal protection system of reusable aerospace vehicles due to their advantages of high temperature resistance,low density and high strength.Given the complex and harsh working environment of aerospace vehicles,it is urgent to develop a high-temperature anti-oxidation sealing coating on the surface of SiC/SiC CMCs to meet the requirements for reusability.In this work,a SiC transition layer was designed and prepared on the surface of SiC/SiC CMCs by chemical vapor deposition(CVD),which is supposed to solve the cracking and spalling problems of the MoSi2-doped SiO2-Al2O3-BaO-B2O3(MoSi2-SABB)glass-ceramic composite coating,and enable the coating to exhibit excellent thermal shock resistance.Finite element analysis showed that the SiC transition layer could effectively reduce the residual stress at the interface between the MoSi2-SABB coating and the substrate,alleviate anisotropy of the residual stress,and significantly improve bonding performance of the coating.This binding mechanism of SiC transition layer with different crystal structures and polarities and MoSi2-SABB coating was investigated by the first principles calculation.The results showed that crystal structure and polarity of SiC transition layer were key factors affecting the coating bonding performance,providing a basis for design and optimization of bonding performance for surface sealing coating of SiC/SiC CMCs.关键词
SiC/SiC陶瓷基复合材料/SiC过渡层/玻璃陶瓷复合涂层/结合性能Key words
SiC/SiC ceramic matrix composite/SiC transition layer/glass-ceramic composite coating/bonding performance分类
化学工程引用本文复制引用
曹路涵,孟佳,薛玉冬,盛晓晨,崔苑苑,乐军,宋力昕..SiC过渡层对SiC/SiC陶瓷基复合材料表面MoSi2-SABB涂层结合性能的影响[J].无机材料学报,2025,40(10):1119-1128,10.
