电子元件与材料
電子元件與材料
전자원건여재료
ELECTRONIC COMPONENTS & MATERIALS
2015年
3期
4-7
,共4页
陶瓷电容器%铁电体%CaTiO3掺杂%钛酸钡锶%介电性能%微观结构
陶瓷電容器%鐵電體%CaTiO3摻雜%鈦痠鋇鍶%介電性能%微觀結構
도자전용기%철전체%CaTiO3참잡%태산패송%개전성능%미관결구
ceramic capacitor%ferroelectric%CaTiO3 doping%barium and strontium titanate%dielectric properties%microstructure
采用固相法制备了CaTiO3掺杂的(Ba0.65Sr0.35)TiO3(BST)陶瓷，研究了CaTiO3掺杂量对BST电容器陶瓷介电性能和微观结构的影响。结果表明：随着CaTiO3掺杂量的增加, BST陶瓷的相对介电常数（εr）先增大然后减小然后增大，介质损耗（tanδ）和交流耐压强度（Eb）先增大然后减小。当CaTiO3掺杂量为摩尔分数10%时，BST陶瓷的综合介电性能较好：εr为4480，tanδ为0.022，Eb为5.8×103 V/mm(AC)，容温特性符合Y5U特性。
採用固相法製備瞭CaTiO3摻雜的(Ba0.65Sr0.35)TiO3(BST)陶瓷，研究瞭CaTiO3摻雜量對BST電容器陶瓷介電性能和微觀結構的影響。結果錶明：隨著CaTiO3摻雜量的增加, BST陶瓷的相對介電常數（εr）先增大然後減小然後增大，介質損耗（tanδ）和交流耐壓彊度（Eb）先增大然後減小。噹CaTiO3摻雜量為摩爾分數10%時，BST陶瓷的綜閤介電性能較好：εr為4480，tanδ為0.022，Eb為5.8×103 V/mm(AC)，容溫特性符閤Y5U特性。
채용고상법제비료CaTiO3참잡적(Ba0.65Sr0.35)TiO3(BST)도자，연구료CaTiO3참잡량대BST전용기도자개전성능화미관결구적영향。결과표명：수착CaTiO3참잡량적증가, BST도자적상대개전상수（εr）선증대연후감소연후증대，개질손모（tanδ）화교류내압강도（Eb）선증대연후감소。당CaTiO3참잡량위마이분수10%시，BST도자적종합개전성능교호：εr위4480，tanδ위0.022，Eb위5.8×103 V/mm(AC)，용온특성부합Y5U특성。
CaTiO3 doped (Ba0.65Sr0.35)TiO3 (BST) ceramics were prepared by solid state method. Influences of CaTiO3 doping amount on the dielectric properties and microstructure of BST capacitor ceramics were investigated. The results show that the relative permittivity(εr) of BST ceramics increases firstly and then decreases and then increases, the dielectric loss(tanδ)and the alternating current(AC) withstand voltage strength(Eb) increase firstly and then decrease, when the CaTiO3 doping amount increases. When the mole fraction of CaTiO3 doping amount is 10%, the BST ceramics possess good comprehensive properties:εr of 4 480, tanδof 0.022, Eb of 5.8×103 V/mm (AC),and the capacitance temperature property is suited for Y5U.
