潜在高熵陶瓷热障涂层材料的研究进展  

Research progress in potential high-entropy ceramic thermal barrier coating materials

作　　者：赖丽萍 汪俊 种晓宇 鲁楠 张志彬 梁秀兵 冯晶[1] LAI Liping;WANG Jun;CHONG Xiaoyu;LU Nan;ZHANG Zhibin;LIANG Xiubing;FENG Jing(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China;National Innovation Institute of Defense Technology,Academy of Military Sciences of PLA,Beijing 100071,China)

机构地区：[1]昆明理工大学材料科学与工程学院,昆明650093 [2]中国人民解放军军事科学院国防科技创新研究院,北京100071

出　　处：《材料工程》2023年第7期61-77,共17页Journal of Materials Engineering

基　　金：云南省重大科技专项-稀贵金属材料基因工程(202102AB 080019-1);云南省基础研究计划项目(202101AW070011,202101BE 070001-015)。

摘　　要：热障涂层(TBC)材料是为航空发动机及燃气轮机提供热防护,延长其使用寿命的一种重要材料。近年对新型热障涂层材料的探索中出现各类高熵稀土氧化物,以期通过热力学上的高熵效应、动力学上的迟滞扩散效应、结构上的晶格畸变效应以及性能上的“鸡尾酒”效应获得优于单主元稀土氧化物的热学、力学、高温相稳定性及抗烧结腐蚀等性能。本文总结归纳了高熵稀土锆酸盐、铈酸盐、铪酸盐、钽酸盐及铌酸盐等五种高熵稀土氧化物的热学性质、力学性质及其他性质,着重强调了热导率和热膨胀系数,同时与相应单组分稀土氧化物的性能进行对比分析,探究影响其性能优劣的多种因素。最后指出未来或可将实验与第一性原理计算相结合,筛选出综合性能更加优异的高熵陶瓷热障涂层材料;同时,将高熵延伸至复杂组分或中熵陶瓷热障涂层材料也成为重要的拓展方向。Thermal barrier coating(TBC)materials are an important method to provide thermal protection and prolong service life for aero-engines and gas turbines.In recent years,various kinds of high-entropy(HE)rare earth oxides have emerged in the exploration of novel thermal barrier coating materials,in order to obtain thermal,mechanical,high temperature phase stability,sintering corrosion resistance and other properties better than single principal rare earth oxides through HE effect on the thermodynamics and kinetics of hysteresis diffusion effect,the structure of the lattice distortion effect and“cocktail”effect on the performance.The thermal,mechanical and other performances of HE rare-earth zirconates,cerates,hafnates,phosphates,tantalates,niobates,etc.were summarized and analyzed in comparison with the performance of the corresponding single phases to investigate the various factors affecting the performance.Finally,it was pointed out that in the future,it may be possible to combine experiments with first-principles calculations to select high-entropy ceramic thermal barrier coating materials with superior comprehensive performance;at the same time,extending high-entropy to complex components or medium-entropy ceramic thermal barrier coating materials is also an important development direction.

关 键 词：热障涂层材料 高熵稀土氧化物 热导率 热膨胀系数 力学性能 高温相稳定性 

分 类 号：TQ174[化学工程—陶瓷工业]