GYSZ-NiCr_(2)O_(4)复相陶瓷材料的高温稳定性及隔热能力研究  

Study on High Temperature Stability and Thermal Insulation Ability of GYSZ-NiCr_(2)O_(4)Composites

作　　者：张琦[1,2] 马壮 王森源[1,2] 刘玲 柳彦博 高祥[3] 王冬 Zhang Qi;Ma Zhuang;Wang Senyuan;Liu Ling;Liu Yanbo;Gao Xiang;Wang Dong(Beijing Institute of Technology,Beijing 100081,China;Beijing Institute of Technology Chongqing Innovation Center,Chongqing 401120,China;Xi’an North Qinghua Electromechanical Co.,Ltd,Xi’an 710000,China;The Second Military Representative Office of the Air Force Equipment Department in Beijing,Beijing 100037,China)

机构地区：[1]北京理工大学,北京100081 [2]北京理工大学重庆创新中心,重庆401120 [3]西安北方庆华机电有限公司,陕西西安710000 [4]空装驻北京地区第二军事代表室,北京100037

出　　处：《稀有金属材料与工程》2023年第4期1432-1438,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(52073029)。

摘　　要：针对目前热障涂层光子导热较高的问题,设计了Gd掺杂YSZ-NiCr_(2)O_(4)复相陶瓷材料(GYSZ-NCO),并对其烧结参数、热稳定性及热导率进行了分析。结果表明,在烧结温度为1600℃时可获得四方相GYSZ材料,且GYSZ-NCO系列材料在1500℃下具有较高的热稳定性,保温300 h无相变发生,加入NiCr_(2)O_(4)后,GYSZ材料热导率在高温下无明显回升,表现出了优良的抗光子导热能力,GYSZ-5%NCO材料热导率最低,在1200℃时仅为2.23 W/(m·K)。In view of the high photonic thermal conductivity of thermal barrier coatings,a Gd-doped YSZ-NiCr_(2)O_(4)composite(GYSZ-NCO)was designed,and its sintering parameters,thermal stability and thermal conductivity were analyzed.The results show that tetragonal GYSZ can be obtained when the sintering temperature is 1600℃.The GYSZ-NCO series materials have high thermal stability at 1500℃,and no phase transition occurs after holding for 300 h.After adding NiCr_(2)O_(4),the thermal conductivity of GYSZ does not rebound significantly at high temperature,showing excellent thermal conductivity against photons.GYSZ-5%NCO material has the lowest thermal conductivity,which is only 2.23 W/(m·K)at 1200℃.

关 键 词：热障涂层 光子导热 高温稳定性 

分 类 号：TQ174.1[化学工程—陶瓷工业]