【作者】 刘韩星； 郝华； 陈磊； 刘洋； 熊博； 尧中华； 曹明贺；

【Author】 LIU Han-xing,HAO Hua,CHEN Lei,LIU Yang,XIONG Bo,YAO Zhong-hua,CAO Ming-he (School of Material Science and Engineering,State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology Wuhan 430070,China)

【机构】 武汉理工大学材料学院材料复合新技术国家重点实验室；

【摘要】 研究了（1-x）BaTiO₃-xBiScO₃体系不同组分的介电性能,并引入(K_0.5Na_0.5)NbO₃,PbTiO₃组元进一步提高其温度稳定性及介电常数。0.7BT-0.10BS-0.2KNN陶瓷体系,可以满足在-55～200℃温度范围内,容温变化率在±15%之间的要求;PbTiO₃的加入形成了"核-壳"结构,介温曲线形成双峰结构,0.61BT-0.10BS-0.20KNN-0.09PT体系容温变化率在-55～200℃保持±15%以内,室温介电常数875,介电损耗小于1%,绝缘电阻率1.74×10¹²Ω·cm,可以满足宽温稳定型MLCC介质陶瓷的要求。更多还原

【Abstract】 Dielectric properties of（1-x）BaTiO₃-xBiScO₃ system was studied by adding(K_0.5Na_0.5)NbO₃ and PbTiO₃ to improve temperature variation of capacitance and permittivity.0.7BT-0.10BS-0.2KNN meet±15% the temperature variation of capacitance in the temperature range-55～200℃.Core-shell structure can be formed by adding PbTiO₃ and there are double peaks in the permittivity -temperature curve.0.61BT-0.10BS-0. 20KNN -0.09PT meet±15%the temperature variation of capacitance in the temperature range -55～200℃with room tempreature permittivity 875,dielectric loss less than 1%and resistivity 1.74×10¹²Ω·cm.This materials has potential application in MLCC with wide temperature stability.更多还原