玻璃掺杂及烧结工艺对BCZT压电陶瓷的影响  

Effect of Glass Doping and Sintering Process on BCZT Piezoelectric Ceramics

作　　者：周源 曾梦诗 曹丽嘉 余洪滔[1] ZHOU Yuan;ZENG Meng-shi;CAO Li-jia;YU Hong-tao(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]西南科技大学材料与化学学院,绵阳621010

出　　处：《中国陶瓷》2024年第2期20-27,35,共9页China Ceramics

基　　金：西南科技大学博士基金(22zx7154)。

摘　　要：采用传统的固相反应法制备了(Ba_(0.85)Ca_(0.15))(Ti_(0.9)Zr_(0.1))O_(3)(BCZT)以及掺杂Al-Mg-Ca玻璃粉的BCZT无铅压电陶瓷。首先研究了预烧温度对BCZT陶瓷粉体的影响,其次研究了掺杂Al-Mg-Ca玻璃粉对BCZT无铅压电陶瓷的烧结性能、介电性能和压电性能的影响。最后通过正交试验确定了其烧结工艺。结果显示BCZT粉体的最佳预烧温度在1100℃。掺杂Al-Mg-Ca玻璃粉能够有效降低BCZT陶瓷的烧结温度。通过烧结工艺正交实验获得了最佳烧结工艺:1100℃预烧,1350℃烧结,升温速度为2℃/min,保温时间为7 h,在110 min降温至800℃。验证正交试验所得到的结果是掺杂Al-Mg-Ca玻璃粉的BCZT陶瓷的居里温度点的介电常数为12228,压电常数d_(33)为425 p C/N。Ba_(0.85)Ca_(0.15))(Ti_(0.9)Zr_(0.1))O_(3)(BCZT) and BCZT lead-free piezoelectric ceramics doped with Al-Mg-Ca glass powder were prepared using the traditional solid-state reaction method.This study first investigated the influence of pre-sintering temperature on BCZT ceramic powder,followed by studying the influence of doping Al-Mg-Ca glass powder on the sintering,dielectric and piezoelectric properties of BCZT lead-free piezoelectric ceramics.Finally,the sintering process was determined by an orthogonal test.The results show that the optimal pre-sintering temperature for BCZT powder was 1100℃.Doping Al-Mg-Ca glass powder effectively reduced the sintering temperature of BCZT ceramics.The optimum sintering process was obtained by an orthogonal experiment:pre-firing at 1100℃,sintering at 1350℃,heating rate of 2℃/min,a holding time of 7 h,cooling to 800℃in 110 min.The results obtained by verifying the orthogonal test are that the dielectric constant at the Curie temperature point of BCZT ceramics doped with Al-Mg-Ca glass powder is 12228,and the piezoelectric constant d_(33) is 425 p C/N.

关 键 词：无铅压电陶瓷 锆钛酸钡钙(BCZT) 正交试验 压电性能 

分 类 号：TQ174.756[化学工程—陶瓷工业]