硅酸盐学报2017，Vol.45Issue(9)：1280-1287,8.DOI:10.14062/j.issn.0454-5648.2017.09.08
BCZT无铅压电陶瓷的水热法制备及其性能
Preparation of BCZT Lead-Free Piezoelectric Ceramics via Hydrothermal Method and Their Performance
摘要
Abstract
Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) lead-free piezoelectric ceramics were prepared via a hydrothermal method and low-temperature sintering. The effects of sintering temperature and time on the crystal structure and electrical properties of the BCZT ceramics were investigated. Compared to a solid-state reaction method, the BCZT ceramics can be synthesized at low sintering temperatures due to the higher sintering capability of the BCZT precursor prepared by the hydrothermal method. The low-temperature sintered BCZT ceramics exhibit a pure perovskite structure, rather homogenous microstructural morphology, smaller grain sizes (i.e.,<10 μm), and higher relative density. The BCZT ceramics prepared via the hydrothermal method exhibit excellent electrical properties, in which their dielectric response behavior approaches normal ferroelectrics, and presents a slight dielectric frequency dispersion as well. The BCZT ceramic sintered at 1340 ℃ for 18 h presents the maximum remnant polarization (i.e., Pr=6.84 μC/cm2).The BCZT ceramic sintered at 1320 ℃ for 18 h exhibits the maximum piezoelectric constant (i.e., 213 pC/N).关键词
水热反应法/锆钛酸钡钙/钙钛矿结构/电学性能Key words
hydrothermal method/barium calcium zirconate titanate/perovskite structure/electrical properties分类
动力与电气工程引用本文复制引用
卢晓羽,方必军,姜彦,丁建宁,赵祥永,罗豪甦..BCZT无铅压电陶瓷的水热法制备及其性能[J].硅酸盐学报,2017,45(9):1280-1287,8.基金项目
国家自然科学基金(51577015) （51577015）
江苏省产学研合作前瞻性联合研究项目(BY2015027-220) （BY2015027-220）
江苏高校优势学科建设工程资助. （）
