环境障涂层材料及结构优化研究进展  

Research Progress on Material and Structure Optimization of Environmental Barrier Coatings

作　　者：任明泽 董琳 杨冠军[1] REN Mingze;DONG Lin;YANG Guanjun(State Key Laboratory for Mechanical Behavior of Materials,School of Materials Science and Engineering,Xi'an 710049,China)

机构地区：[1]西安交通大学材料科学与工程学院,金属材料国家重点实验室,西安710049

出　　处：《中国腐蚀与防护学报》2025年第1期33-45,共13页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金(52301102);中国博士后科学基金(2024M752571)。

摘　　要：环境障涂层(EBC)为碳化硅陶瓷基复合材料(SiC-CMC)提供了有效的高温水蒸气防护,成为新一代航空发动机高温部件的关键材料。本文综述了稀土硅酸盐/Si粘结层EBC的制备技术与典型结构特征,探讨了在富含水氧、CMAS熔盐的高温发动机环境下的服役失效机理,进一步针对涂层热失配、高温水氧腐蚀、CMAS腐蚀、粘结层氧化等问题,从材料和结构角度总结了硅酸盐面层和Si粘结层的设计及优化方法,同时,面对更高温度的服役需求,介绍了超高温面层结构设计和新型耐高温粘结层材料设计研究进展,最后展望了高性能环境障涂层的未来研究方向。Environment barrier coatings(EBC)provide effective protection from high-temperature water vapor corrosion for silicon carbide ceramic matrix composites(SiC-CMC),serving as a key material for the next-generation high-temperature components of aircraft engines.This paper reviews the preparation technology and typical structural characteristics for EBC of rare earth silicate/Si bond layer,and discusses the service failure mechanisms in high-temperature engine environments rich in water vapor and deposits CaO-MgO-Al_(2)O_(3)-SiO_(2)(CMAS).Furthermore,addressing issues such as thermal mismatch of coatings,high-temperature water vapor corrosion,CMAS corrosion,and bond coat oxidation,the design and optimization methods of silicate top coats and Si bond coats are summarized from the perspectives of materials and structures.In response to the demand for even higher operating temperatures,advancements in ultra-high-temperature surface layer structure design and the development of new high-temperature-resistant bond coat materials are introduced.Finally,future research directions for high-performance environment barrier coatings are discussed.

关 键 词：环境障涂层(EBC) 稀土硅酸盐 热喷涂 腐蚀 氧化 

分 类 号：TG174.4[金属学及工艺—金属表面处理]