航空发动机SiCf/SiC复合材料与环境障涂层系统及制备技术研究进展

doi:10.19936/j.cnki.2096-8000.20220928.016

摘要/Abstract

摘要： 轻质耐高温的碳化硅纤维增韧的碳化硅基复合材料及其环境障涂层(SiC_f/SiC CMCs+EBCs)系统在航空发动机不断攀升的涡轮前温度面前展现出了极大潜力,经过20多年的研发,CMC/EBC部件已成功用于现役航空发动机高温端,新的研究也层出不穷。SiC_f/SiC CMCs+EBCs系统的关键制备工艺包括纤维制备、预制体编织、界面层制备、基体增密和涂层。纤维质量、预制体结构和界面层性能决定了CMC的力学性能,而基体和EBC左右了系统的抗氧化性和环境稳定性。在新型先驱体/新工艺/新涂层材料开发、编织结构优化、原材料利用率和工艺稳定性等方面,CMC/EBC制备技术还有进一步提高的空间。

关键词: SiC_f/SiC复合材料, SiC纤维, 纤维预制体, 界面层, EBC, 航空发动机

Abstract: Light and high temperature resistant silicon carbide fiber toughened silicon carbide matrix composites and the environmental barrier coatings (SiC_f/SiC CMCs+EBCs) system show great potential in the rising turbine inlet temperature of aeroengines. With over 20 years of research and development, CMC/EBC components have been successfully used in the high temperature end of aeroengines, and new research is emerging one after another. The key preparation technology of SiC_f/SiC CMCs+EBCs system includes fiber preparation, preform preparation, interphase preparation, matrix densification and coating. Fiber quality, preform structure and interface layer properties determine the mechanical properties of CMC, while matrix and EBC affect the oxidation resistance and environmental stability of the system. There is still room for further improvement of CMC/EBC preparation technology in the development of new precursors, new processes, new coating materials, optimization of weaving structure, utilization of raw materials and process stability.

Key words: SiC_f/SiC composites, SiC fiber, fiber preform, interphase, EBC, aeroengine

中图分类号:

TB332

王瀚艺, 卢嘉铮, 贺强. 航空发动机SiC_f/SiC复合材料与环境障涂层系统及制备技术研究进展[J]. 复合材料科学与工程, 2022, 0(9): 109-123.

WANG Han-yi, LU Jia-zheng, HE Qiang. Research progress on SiC_f/SiC composite and environmental barrier coating system and preparation technology for aeroengine[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(9): 109-123.

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