【摘要】 采用传统电容器陶瓷制备工艺,研究了CeO2加入量对Ba(Zr,Ti)O3(BTZ)基电容器陶瓷性能的影响,得到了CeO2影响其性能的规律 ,当w(CeO2)为1.0%时相对介电常数最大(7193),当w(CeO2)为0.5%时介质损耗最小(0.0351)。CeO2有降低居里温度及展宽介电常数-温度峰和减小介电常数温度变化率的作用。利用SEM研究了CeO2对BTZ基陶瓷微观结构的影响,探讨了影响性能的机制,结果表明:CeO2是通过与BTZ形成缺陷固溶体、移峰、偏析晶界及抑制晶粒生长等来影响瓷料性能和结构的。更多还原

【Abstract】 The influence of additive amount of CeO2 on the properties of Ba(Ti,Zr)O3(BTZ) series capacitor ceramics was investigated by means of conventional capacitor ceramic preparation technology,and the law of the influence on the BTZ series capacitor ceramics was obtained,i.e. the diclectric constant is maximum(7193) while w(CeO2)=1.0%,the dielectric losses is minimum(0.0351) while w(CeO2)=0.5%. CeO2 can decrease the Curie temperature and widen the εr-T peak for BTZ ceramics . The influence of CeO2 additive amount on the microstructure of BTZ ceramics by means of SEM was studied. The influence mechanism of CeO2 additive on the properties of the BTZ ceramics was discussed . The results show that CeO2 additive influences the properties of BTZ ceramics by means of forming defect solid solution, shifting Curie temperature peak effect, segregation in crystal boundary, stop grain growth , and so on .更多还原