种晓宇,汪俊,蒋业华,冯晶.GdTaO4陶瓷的制备、力学性质和热导率研究[J].稀有金属材料与工程,2019,48(4):1179~1182.[Chong XiaoYu,Wang Jun,Jiang YeHua,Feng Jing.Synthesis, mechanical properties and thermal conductivity of GdTaO4[J].Rare Metal Materials and Engineering,2019,48(4):1179~1182.]
GdTaO4陶瓷的制备、力学性质和热导率研究
投稿时间:2017-08-26  修订日期:2017-10-19
中文关键词:  热障涂层  稀土钽酸盐  热导率  力学各向异性
基金项目:昆明理工大学青年拔尖人才培养项目资助(项目号11504146);国家自然科学基金资助(项目号51762028)
中文摘要:
      为寻找性能更为优异的陶瓷热障涂层材料,本文采用固相反应法合成了单斜结构的GdTaO4陶瓷材料,分析了其微观组织形貌。第一性原理计算结果表明其沿[100]晶向的杨氏模量值约为[010]和[001]方向上的3倍。实验测得800℃下其热导率约为1.70 W.m-1. K-1,明显低于7-8YSZ在800℃下的热导率(2.37-2.47 W.m-1. K-1),是一种潜在的低热导陶瓷热障涂层材料。
Synthesis, mechanical properties and thermal conductivity of GdTaO4
英文关键词:Thermal barrier coatings  rare-earth tantalite  thermal conductivity  anisopropy of mechanical properties
英文摘要:
      In order to search the more excellent thermal barrier coating materials, the monoclinic GdTaO4 ceramics are synthesized by solid-phase reaction. The microstructure is analyzed. The results of first-principles calculations indicate that the Young’s modulus along [100] crystallographic orientation is triple as large as that along [010] and [001] crystallographic orientation. The measured thermal conductivity is 1.70 W.m-1.K-1at 800℃ in experiment, which is lower than the thermal conductivities of 7-8YSZ (2.37-2.47 W.m-1.K-1). The GdTaO4 is a promising thermal barrier coating material.
作者单位E-mail
种晓宇 昆明理工大学材料科学与工程学院 chongxiaoyu007@163.com 
汪俊 昆明理工大学材料科学与工程学院  
蒋业华 昆明理工大学材料科学与工程学院  
冯晶 昆明理工大学材料科学与工程学院  
摘要点击次数: 79
全文下载次数: 43
查看全文  查看/发表评论  
关闭