氧化钙含量对3-1型多孔压电陶瓷性能的影响  

Effect of CaO Content on Properities of 3-1 Type Porous Lead Zirconate Titanate Ceramics

作　　者：徐静[1] 刘炜[1] 吕瑞芳[1] 王延忠[1] 常青[1] 杨金龙[1,2] 

机构地区：[1]中北大学材料科学与工程学院,太原030051 [2]清华大学材料科学与工程学院新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《硅酸盐通报》2014年第2期231-235,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51172120)

摘　　要：利用海藻酸钠特殊的螯合性能,以CaCl2为固化剂,制备出了内部具有高度定向孔道的3-1型多孔PZT陶瓷。本实验配制固含量为10wt%的PZT陶瓷浆料,可以制备出孔径为200μm,孔隙率高达85%的多孔PZT陶瓷。研究了CaO含量对多孔PZT陶瓷电学性能和显微硬度的影响规律。当CaO含量为0.62wt%时,其纵向压电系数(d33)为120,介电常数(ε)可达820,较CaO含量为2.02wt%时,分别提高了84%和51%。随着CaO含量的增大,多孔PZT陶瓷的显微硬度明显提高,当CaO含量为2.02wt%时达到最大值0.98 GPa。By the special chelating properties of sodium alginate and CaC12, the 3-1 type porous PZT ceramic with 85% porosity and 200 p,m characterized by highly ordered and unidirectional oriented pores in the micrometer was made with a 10wt% solid loading. In this paper, we studied the influence of CaO content on the electrical properities and vickers hardness of porous PZT ceramics. When the CaO content was 0.62wt% ,the d33 and e reached 120 and 820 respectively, which was 84% and 51% greater than that of the 2.02wt% CaO content porous PZT ceramics. With the increase of CaO content the vickers hardness of the porous PZT ceramic magnified significantly and reached the peak （0.98 GPa）when the CaO content was 2wt%.

关 键 词：海藻酸钠 多孔PZT陶瓷 氧化钙 显微硬度 

分 类 号：TQ174[化学工程—陶瓷工业]