硅酸盐学报2020，Vol.38Issue(6)：849-854,6.DOI:10.14062/j.issn.0454-5648.20190648
A位阳离子缺位对(NaBi)0.47Ba0.06TiO3无铅压电陶瓷结构和性能的影响
Impact of Deficiency of A-site Cations on Structure and Piezoelectric Properties of Lead-free (NaBi)0.47Ba0.06TiO3 Ceramics
摘要
Abstract
A series of nonstoichiometric (NaBi)0.47Ba0.06TiO3 (NBT–6BT) ceramics were prepared by the conventional solid-state method. The impact of A-site nonstoichiometry on the structural and electrical properties of the prepared ceramics was investigated. The room temperature diffraction patterns and Raman spectra revealed the coexistence of the Cc and P4bm phases for all samples. The experimental results in the present work showed that a deficiency in the Bi3+ and Na+ contents could lead to a transformation from the Cc to P4bm phase in addition to a variation in the piezoelectric coefficient d33 with the Cc phase fraction. Favorable thermostability for the piezoelectric properties of the ceramics was observed by testing the depolarization temperature (Td). Among them, the d33 of the N0.32B0.32T–6BT ceramics still had a value of 23 pC/N at 160 ℃ . These results showed that adeficiency in the Na+ and Bi3+ contents can significantly enhance Td and extend the temperature region for the application of NBT–6BT ceramics.关键词
无铅压电陶瓷/钛酸铋钠/相结构/退极化温度Key words
lead-free ceramic/sodium bismuth titanate/structure/depolarization temperature分类
化学化工引用本文复制引用
苏春阳,江向平,陈超,刘俊明,夏翔,聂鑫,黄枭坤,庄俊生..A位阳离子缺位对(NaBi)0.47Ba0.06TiO3无铅压电陶瓷结构和性能的影响[J].硅酸盐学报,2020,38(6):849-854,6.基金项目
国家自然科学基金(51562014 , 51602135 , 51862016 , 51762024) （51562014 , 51602135 , 51862016 , 51762024）
江西省自然科学基金(20171BAB216012) （20171BAB216012）
江西省教育厅科技项目(GJJ170789,GJJ170794,GJJ180718, GJJ170804). （GJJ170789,GJJ170794,GJJ180718, GJJ170804）
