中国建材科技
中國建材科技
중국건재과기
CHINA BUILDING MATERIALS SCIENCE & TECHNOLOGY
2013年
2期
51-53
,共3页
高温压电陶瓷%PBNT%居里温度
高溫壓電陶瓷%PBNT%居裏溫度
고온압전도자%PBNT%거리온도
high temperature piezoelectric ceramics%PBNT%curie temperature
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εT 3/ε0达最大值181,x(Ba)=0.06时介电损耗tgδ达最小值0.0023.
採用固相燒結工藝製備瞭(Pb1-xBax)1.05(Nb0.95Ti0.05)2O6(簡稱PBNT)高溫壓電陶瓷,研究不同Ba摻雜量對PBNT陶瓷的相結構、居裏溫度、介電性能的影響.XRD 測試結果錶明:隨Ba摻雜量增加,材料的晶體結構均為鎢青銅型結構.介電溫譜測試錶明:PBNT陶瓷具有高居裏溫度(Tc≥550℃),可在高溫(500℃)環境下使用;噹x(Ba)=0.02時居裏溫度Tc達最大值660℃,x(Ba)=0.04時介電常數εT 3/ε0達最大值181,x(Ba)=0.06時介電損耗tgδ達最小值0.0023.
채용고상소결공예제비료(Pb1-xBax)1.05(Nb0.95Ti0.05)2O6(간칭PBNT)고온압전도자,연구불동Ba참잡량대PBNT도자적상결구、거리온도、개전성능적영향.XRD 측시결과표명:수Ba참잡량증가,재료적정체결구균위오청동형결구.개전온보측시표명:PBNT도자구유고거리온도(Tc≥550℃),가재고온(500℃)배경하사용;당x(Ba)=0.02시거리온도Tc체최대치660℃,x(Ba)=0.04시개전상수εT 3/ε0체최대치181,x(Ba)=0.06시개전손모tgδ체최소치0.0023.
(Pb1-xBax)1.05(Nb0.95Ti0.05)2O6 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 XRD 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 640℃.When x(Ba)=0.04,the the values ofεT 3 /ε0 have reached to 181.When x(Ba)=0.06,the the values of tgδ have reached to 0.0023.
