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环境障涂层——挑战与机遇 被引量:4

Environmental Barrier Coatings—Challenges and Opportunities
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摘要 陶瓷基复合材料(CMCs)是新一代高推重比航空发动机高温部件的主要候选材料。然而在应用环境中,陶瓷基复合材料部件却面临着在高温水蒸气环境下存在性能退化(通称水氧腐蚀)及易受CMAS高温熔盐侵蚀的严峻挑战。而采用环境障涂层(EBC)可以使陶瓷基复合材料热端部件有效抵御发动机环境对基底表面的热腐蚀,提高其高温稳定性。本文在综述了环境障涂层研究的进展的基础上,分析了环境障涂层研究面临的挑战和机遇,提出了急需解决的技术问题。设计出多层多组分甚至多尺度结构的EBC涂层并通过选择适宜的涂层工艺得到高性能涂层,虽具有很大的挑战性,却能满足陶瓷基复合材料高温构件对EBC涂层的迫切需求。
出处 《国际航空航天科学》 2018年第3期17-29,共13页 Journal of Aerospace Science and Technology
关键词 环境障涂层 陶瓷基复合材料 高温熔盐侵蚀 水氧腐蚀 稀土硅酸盐 Environmental Barrier Coating Ceramic Matrix Composites High Temperature Molten Salt Corrosion Water Vapor Corrosion Rare Earth Silicate
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