航空发动机环境障涂层：材料及性能  

Environmental Barrier Coating for Aeroengines:Materials and Properties

作　　者：马壮[1,2] 刘玲 郑伟[1,2] MA Zhuang;LIU Ling;ZHENG Wei(School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China;National Key Laboratory of Science and Technology on Materials under Shock and Impact,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学材料学院,北京100081 [2]冲击环境材料技术国家重点实验室,北京100081

出　　处：《现代技术陶瓷》2019年第5期331-344,共14页Advanced Ceramics

基　　金：国家自然科学基金(51772027)

摘　　要：硅基非氧化物陶瓷及其复合材料具有优异的物理性能和高温力学性能,在航空发动机高温热端部件上展现出了巨大的应用潜力。但在发动机工作环境下,硅基非氧化物陶瓷易与水蒸气反应生成挥发性的Si(OH)4,导致其性能退化。在航空发动机上应用需解决其燃气腐蚀问题,必须使用环境障涂层的保护以提高陶瓷基体的表面稳定性。因此,对环境障涂层的抗高温水氧腐蚀性能的研究近年来得到了广泛关注。本文在介绍传统环境障涂层抗水氧腐蚀现状的基础上,明确了水蒸气侵蚀涂层的化学反应过程,总结了传统环境障涂层的失效机制,并阐述了新型环境障涂层材料系列性能的研究进展,以期为未来航空发动机用环境障涂层材料的选择和高温水氧腐蚀的防护提供有益参考。Silicon-based non-oxide ceramics and their composites have excellent physical and mechanical properties at high temperature,demonstrating a huge potential for application in the aero-engine at high temperature.However,when exposes to combustion environment containing water vapor,it is easily oxidized and reacts with water vapor to generate Si(OH)4,which causes weight loss and failure of ceramic components.In order to successfully apply silicon based ceramics in combustion environment at high temperature,an environmental barrier coating(EBC)was developed to protect it from water vapor corrosion and to improve the temperature and durability of hot section in combustion environment.In this paper,based on the introduction of the current status of water-oxygen corrosion resistance of traditional environmental barrier coatings,the chemical reaction process of water vapor corrosion coatings is defined,the failure mechanism of traditional environmental barrier coatings is summarized and a new environmental barrier coating material series is described.The research progress of performance is expected to provide a useful reference for future selection of environmental barrier coating materials for aero-engines and protection against water and oxygen corrosion at high temperature.

关 键 词：环境障涂层 硅基结构陶瓷 水氧腐蚀 表面稳定性 

分 类 号：V23[航空宇航科学与技术—航空宇航推进理论与工程]