烧绿石结构A_2B_2O_7热障涂层材料热物理性能综述  

Thermophysical Properties of Pyrochlore Structure A_2B_2O_7 Thermal Barrier Coating Materials:A review

作　　者：吴琼[1,2] 张鑫[1,2] 彭浩然[1,2] 冀晓鹃[1,2] 章德铭[1,2] 任先京[1,2] 

机构地区：[1]北京矿冶研究总院,北京100160 [2]北京市工业部件表面强化与修复工程技术研究中心,北京102206

出　　处：《热喷涂技术》2014年第1期1-9,共9页Thermal Spray Technology

基　　金：国家科技支撑项目资助(2012BAE02B00)

摘　　要：烧绿石结构材料由于具有良好的高温相结构稳定性,低热导率等优点,是最为广泛研究且最具有应用前景的新型热障涂层材料系列之一。本文从烧绿石结构材料高温相稳定性、热导率、热膨胀系数、断裂韧性、抗烧结性、与Al2O3化学相容性等几个方面进行了综述,并将成分和掺杂对各性能的影响规律进行了归纳和总结,对新型烧绿石结构热障涂层材料的成分设计、性能研究等具有重要意义。The pyrochlore structure material, due to its excellent high tempe：rature structural stability, low thermal conductivity, etc., is one of the most widely studied and most promising of the new series of thermal barrier coatings. This paper reviews the high-temperature phase stability, thermal conductivity, thermal expansion coefficient, fracture toughness, anti-sintering properties and the chemical compatibility with A1203 of the pyrochlore structure materials. The effects of composition and doping on the properties were also discussed. This review helps in a better understanding of the composition design and application potentialities of the pyrochlore structure materials as thermal barrier coatings materials.

关 键 词：热障涂层 烧绿石结构 热物理性能 热导率 热膨胀系数 断裂韧性 

分 类 号：TG174.4[金属学及工艺—金属表面处理]