基于场致应变的钛酸铋钠基压电纤维复合材料性能研究  

Study on properties of bismuth sodium titanate based piezoelectric fiber composites based on field induced strain

作　　者：陈宇龙 汤林 袁晰[2] 罗行 张斗 CHEN Yulong;TANG Lin;YUAN Xi;LUO Hang;ZHANG Dou(Powder Metallurgy Research Institute,Central South University,Changsha 410083,China;School of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China)

机构地区：[1]中南大学粉末冶金研究院,湖南长沙410083 [2]中南大学化学化工学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2024年第8期2857-2866,共10页Journal of Central South University:Science and Technology

基　　金：国家重点研发计划项目(2020YFA0711702);湖南省青年科技人才项目(2022RC1029);中南大学前沿交叉项目(2023QYJC036)。

摘　　要：基于钛酸铋钠基无铅陶瓷制备压电纤维复合材料,并研究BNT基压电陶瓷纤维体积分数对复合材料的影响。研究结果表明:随压电陶瓷体积分数的增加,自由应变和顶端位移增大;当压电陶瓷体积分数为81.40%时,在0~1500 V正弦电压激励下,自由应变和顶端位移最大分别达到543×10^(-6)和14.92 mm;在循环寿命实验中,经历1.0×10^(6)次循环后性能依然稳定,具有优异的耐疲劳性能,作为柔性驱动器应用前景广阔。The piezoelectric fiber composites were prepared based on bismuth sodium titanate lead-free ceramics,and the effect of BNT-based piezoelectric ceramic fiber volume fraction on the composites was studied.The results show that the free strain and tip displacement increased with the increase of piezoelectric ceramic volume fraction,and the maximum longitudinal free strain and tip displacement are 543×10^(−6) and 14.92 mm,respectively,under sinusoidal piezoelectric excitation from 0 to 1500 V when the piezoelectric ceramic volume fraction is 81.40%.After 1.0×10^(6) cycles in the cycle life experiment,the performance is still stable and has excellent fatigue resistance,which has wide application prospects as a flexible driver.

关 键 词：压电纤维复合材料 钛酸铋钠 场致应变 驱动性能 

分 类 号：TB332[一般工业技术—材料科学与工程]