现代技术陶瓷2026，Vol.47Issue(3)：187-215,29.DOI:10.16253/j.cnki.37-1226/tq.2026.03.001
面向航空发动机热端部件的SiCf/SiC复合材料CVI+PIP组合致密化工艺研究进展
Research Progress on the Combined CVI+PIP Densification Process for SiCf/SiC Composites for Aero-Engine Hot-Section Components
李威 1刘烨锟 1邱海鹏 1关星宇 1崔恒 1崔明皓 2陈芳芳 2陈明伟1
作者信息
- 1. 中国航空制造技术研究院,北京 100130
- 2. 中国航发南方工业有限公司,湖南 株洲 412002
- 折叠
摘要
Abstract
The next-generation aero-engines impose increasingly stringent demands on the high-temperature resistance,lightweight nature,and long service life of hot-section components.Continuous silicon carbide fiber-reinforced silicon carbide(SiCf/SiC)ceramic matrix composites have emerged as core candidate materials owing to their excellent comprehensive performance.However,the efficient densification of complex-shaped components remains a critical bottleneck restricting their engineering applications.The combined chemical vapor infiltration(CVI)and precursor infiltration and pyrolysis(PIP)process,by synergistically leveraging the advantages of CVI in fabricating a SiC matrix with high crystallinity and few defects and the characteristics of PIP in efficient pore filling and near-net shaping,provides an optimal technical pathway to address the issues of low densification efficiency,high cost,and unbalanced performance associated with single processes.This paper focuses on the synergistic mechanism of the CVI+PIP combined process.It systematically analyzes the parameter optimization strategies for key processing steps,including fiber preform fabrication,interphase tailoring,initial CVI densification,deep PIP filling,and post-treatment.The core advantages of this combined process in enhancing material density,optimizing microstructure,shortening the fabrication cycle,and reducing cost are elaborated in depth.Furthermore,the application examples and performance of the process in typical hot-section components such as combustor liners,turbine guide vanes,and exhaust nozzles are reviewed in detail.Finally,considering current technical challenges including process optimization,precise microstructural control,and the development of durable environmental barrier coatings,future research directions are proposed.This paper provides important theoretical support and technical references for the scale-up fabrication of high-performance SiCf/SiC composite hot-section components and the performance leap of aero-engines.关键词
SiCf/SiC复合材料/组合制备工艺/航空发动机Key words
SiCf/SiC composites/Combined preparation process/Aero engine分类
化学化工引用本文复制引用
李威,刘烨锟,邱海鹏,关星宇,崔恒,崔明皓,陈芳芳,陈明伟..面向航空发动机热端部件的SiCf/SiC复合材料CVI+PIP组合致密化工艺研究进展[J].现代技术陶瓷,2026,47(3):187-215,29.
