摘要
TiAl合金因其低密度、高比强度及高温性能优异等特点,是航空发动机镍基高温合金最具优势的替代材料之一,但其700~800℃以上抗氧化性能不足,严重制约着部件的可靠性与寿命。本文从涂层材料体系、制备方法、失效形式等方面综述了TiAl合金表面防护研究现状,并基于航空发动机部件性能持续提升对材料综合性能的应用需求,提出TiAl合金防护涂层从“屏障保护”演进为“功能集成”的研究趋势。
TiAl alloys represent among the most advantageous alternative materials to nickel-based high-temperature alloys for aeroengine applications because of their low density,high specific strength,and superior high-temperature performance.However,their oxidation resistance above 700~800℃is inadequate,severely restricting component reliability and service life.This paper reviews and discusses recent advances in surface protection technologies for TiAl alloys,organized by coating material systems,preparation methods,and failure mechanisms.In response to the growing demands for comprehensive material performance in aerospace engine components,a research trend in which protective coatings for TiAl alloys are evolving from barrier protection toward functional integration solutions has been identified.
作者
张宜键
周晓俊
徐文朝
陈思凡
王永胜
ZHANG Yijian;ZHOU Xiaojun;XU Wenchao;CHEN Sifan;WANG Yongsheng(College of Materials Science and Engineering,Taiyuan University ofTechnology,Taiyuan 030024,China)
出处
《铸造技术》
2026年第3期234-248,共15页
Foundry Technology
基金
国家自然科学基金重点项目(52531004)
山西省归国留学人员科研基金(2024-057)。
关键词
TIAL合金
表面改性
涂层
抗氧化性能
TiAl alloys
surface modification
coatings
antioxidant properties
