Research progress on silicon carbide and its modified coatings in C/SiC composites  

C/SiC复合材料中碳化硅及其改性涂层的研究进展

作　　者：Wu-bin QI Jia-qi WU Zhuan LI Peng XIAO Jun-jie DUAN Yang-jie LI Liang PANG Zong-long GAO Jia-min ZHU Yang LI 戚武彬;吴佳琦;李专;肖鹏;段俊杰;李阳杰;庞亮;高宗龙;朱佳敏;李杨(中南大学粉末冶金研究院,长沙410083)

机构地区：[1]Powder Metallurgy Research Institute,Central South University,Changsha 410083,China

出　　处：《Transactions of Nonferrous Metals Society of China》2024年第12期3822-3845,共24页中国有色金属学报（英文版）

基　　金：The authors would like to thank the National Key Research and Development Program of China(No.2021YFB3703800);the National Natural Science Foundation of China(No.52075555);the Hunan Provincial Intelligent Agricultural Machinery Equipment Innovation Project in 2023 by Hunan Provincial Department of Agriculture and Rural,China,for their financial support.

摘　　要：Carbon fiber reinforced silicon carbide ceramic composite(C/SiC)has become a key structural material due to its excellent high temperature resistance,corrosion resistance and oxidation resistance.However,C/SiC composites are prone to oxidation under long-term high temperature loading conditions.In this work,the research progress of SiC coating and its modified coating on the surface of C/SiC composite is reviewed.The optimization of these coatings mainly involves two aspects:structure and composition.The focus of structural optimization is to improve the interphase structure by such as SiC nanowires,thereby improving the interfacial bonding strength between the coatings and between the coatings and the substrate.The focus of composition optimization is to improve the performance of the coatings under high temperature loads by rare earth silicates,etc.The modification strategies of various modified coatings are emphatically introduced,which is helpful to guide the preparation of high-performance C/SiC coating materials in the future.碳纤维增强碳化硅陶瓷复合材料(C/SiC)以其优异的耐高温、耐腐蚀和抗氧化等性能成为关键的结构材料,但C/SiC复合材料在长期高温载荷条件下易发生氧化。本文综述了C/SiC复合材料表面SiC涂层及其改性涂层的研究进展,这些涂层的优化主要涉及结构和成分两个方面:结构优化的重点是通过SiC纳米线等改善界面相结构,从而提高涂层之间以及涂层与基体之间的界面结合强度。成分优化的重点是通过稀土硅酸盐等成分来改善涂层在高温载荷下的性能等。重点介绍了各种改性涂层的改性策略,有助于指导未来高性能C/SiC涂层材料的制备。

关 键 词：C/SiC composite COATING coating modification OXIDATION STRENGTH 

分 类 号：TB332[一般工业技术—材料科学与工程]