热障涂层高熵合金粘结层材料研究进展  

Research Progress in High-Entropy Alloy Bond Coat Material for Thermal Barrier Coatings

作　　者：赵晓峰 李玲 张晗 陆杰 ZHAO Xiaofeng;LI Ling;ZHANG Han;LU Jie(Shanghai Key Laboratory of Advanced High-Temperature Materials and Precision Forming,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学材料科学与工程学院上海市先进高温材料及精密成型重点研究室,上海200240

出　　处：《金属学报》2022年第4期503-512,共10页Acta Metallurgica Sinica

基　　金：国家自然科学基金项目No.52102072。

摘　　要：热障涂层是现代高性能航空发动机的关键材料和技术,能够显著提升热端部件(比如涡轮叶片)的工作温度,同时保护热端部件不受高温氧化和腐蚀。金属粘结层作为热障涂层的关键组成部分,直接决定了热障涂层体系的服役性能和寿命。然而,传统MCrAlY粘结层因为存在抗氧化性能不足、粘结层-基体互扩散严重以及高温强度不足等问题,导致服役温度不足1100℃,无法满足下一代超高温热障涂层的应用温度要求。基于传统MCrAlY粘结层中存在的关键问题,本团队提出高熵合金粘结层的设计思路,旨在突破传统粘结层的应用温度局限。本文重点介绍了Y/Hf-NiCoCrAlFe高熵合金的抗氧化与抗热腐蚀性能,同时也对此高熵合金粉体与粘结层的抗氧化性能进行了阐述,最后对高性能高熵合金粘结层的发展方向进行了展望。Thermal barrier coatings(TBCs)are essential material and technology for modern highperformance aeroengines.They can promote the service temperature of hot components(such as turbine blades)while protecting them from oxidation and corrosion.A key component of TBCs is the metallic bond coat,which directly governs the service performance and lifetime of TBCs.However,due to its low oxidation resistance,severe bond coat-substrate interdiffusion,and low high-temperature strength,the MCrAlY bond coat cannot meet the temperature requirement of next-generation ultrahigh temperature TBCs because its service temperature is lower than 1100℃.This study proposes a high-entropy alloy bond coat design strategy to address critical issues,aiming to break the temperature limitation of conventional bond coats.Herein,the oxidation and thermal corrosion resistance of Y/Hf-NiCoCrAlFe highentropy alloy as well as the oxidation resistance of high-entropy alloy powder and bond coat are introduced and elaborated.Finally,the development trend of high-performance high-entropy alloy bond coat is summarized.

关 键 词：热障涂层 金属粘结层 高熵合金 抗氧化性能 抗热腐蚀性能 

分 类 号：TG141[一般工业技术—材料科学与工程]