摘要
采用固相烧结工艺制备了(Pb1-xBax)1.05(Nb0.95Ti0.05)2O6(简称PBNT)高温压电陶瓷,研究不同Ba掺杂量对PBNT陶瓷的相结构、居里温度、介电性能的影响。XRD测试结果表明:随Ba掺杂量增加,材料的晶体结构均为钨青铜型结构。介电温谱测试表明:PBNT陶瓷具有高居里温度(Tc≥550℃),可在高温(500℃)环境下使用;当x(Ba)=0.02时居里温度Tc达最大值660℃,x(Ba)=0.04时介电常数ε3T/ε0达最大值181,x(Ba)=0.06时介电损耗tgδ达最小值0.0023。
（Pbl xBax）l.0s（Nb0.9sTi005）206 piezoelectric ceramics with high curie temperature were prepared by solid phase sintering ceramic technology. The effects of Ba composition on the phase structure,curie temperature and dielectric properties were investigated.The X1KD results indicate that the crystalline structure of the material are tungsten bronze type structure as the amount of Ba increasing.The dielectric temperature spectrum showed that the PBNT ceramics had high Curie temperature（TC 〉 550℃ ）.The ceramic samples are suitable for the application at high temperatures（500℃ ）. When x（Ba）=0.02,the the values of Tc have reached to l＂ /,~o have reached to 181.When x（Ba）=0.06,the the values of tg 8 have reached to 640^（2; .When x（Ba）=0.04,the the values of 3 0.0023.
出处
《中国建材科技》
2013年第2期51-53,共3页
China Building Materials Science & Technology
关键词
高温压电陶瓷
PBNT
居里温度
high temperature piezoelectric ceramics
PBNT
curie temperature
