一种降低PZT预烧温度的方法  

A method for reducing PZT pre-sintering temperature

作　　者：宋海深 周沁[1] 向超[1] 叶卫忠 黄宝坤 

机构地区：[1]桂林电子科技大学材料科学与工程学院,广西桂林541004 [2]佛山市南海科日超声电子有限公司,广东佛山528000 [3]佛山市科日压电器件有限公司,广东佛山528000

出　　处：《桂林电子科技大学学报》2017年第1期68-72,共5页Journal of Guilin University of Electronic Technology

基　　金：国家自然科学基金(612610012)

摘　　要：为了降低PZT合成时PbO的挥发,以保证PZT化学计量比的准确性,并改善PZT压电陶瓷的生产环境,提出了一种降低PZT合成温度的方法。利用DSC-TGA测试混料后PZT原材料的理论预烧温度,对预烧后的粉末进行XRD衍射分析,并测试了烧结后的PZT压电陶瓷片的烧结密度及其电性能。测试结果表明:采用干压小圆块的方式,能够将预烧温度降至710℃;采用1250℃进行烧结,能够获得烧结密度较好、介电性能和压电性能较优异的陶瓷片。A method to pre-sintering PZT powders is proposed,in which not only volatilization of PbO can be reduced but also the accuracy of the formula of stoichiometric ratio can be improved.And the PZT ceramics production environment can be improved.The pre-sintering temperature of PZT ceramics is investigated by using X-ray diffraction（XRD）,DSC-TGA curves,besides,testing the sintered density and electric properties of PZT ceramics.The result shows that the PZT raw material powder which is pressed into block before per-sintering can reduce the pre-sintering temperature to 710 ℃ and,the better sintered density and excellent dielectric properties and piezoelectric properties will be obtained when sintering temperature is 1250 ℃.

关 键 词：PZT压电陶瓷片 预烧温度 压电性能 

分 类 号：TB32[一般工业技术—材料科学与工程]