微波辅助溶胶-凝胶-水热合成粉末制备的BCZT陶瓷的结构与电学性能

Structure and electrical properties of BCZT ceramics derived from microwave-assisted sol-gel-hydrothermal synthesized powders.

作者信息

Ji Xiang, Wang Chuanbin, Harumoto Takashi, Zhang Song, Tu Rong, Shen Qiang, Shi Ji

机构信息

School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, 221116, China.

State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China.

出版信息

Sci Rep. 2020 Nov 23;10(1):20352. doi: 10.1038/s41598-020-73784-9.

DOI:10.1038/s41598-020-73784-9

PMID:33230165

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7684282/

Abstract

A novel microwave-assisted sol-gel-hydrothermal method was employed to rapidly synthesize BaCaZrTiO (BCZT) powders. The effects of reaction time on the structure, crystallinity, purity and morphology of the products were investigated. The results of XRD, FTIR, SEM and TEM indicated that BCZT powders could be obtained in even 60 min at a low synthesis temperature of 180 °C, which were well-crystallized with stoichiometric composition and uniform grain size (~ 85 nm). BCZT ceramic derived from the rapidly-synthesized powders had a dense microstructure and good electrical properties (ε = 9579, d = 496 pC/N, 2P = 25.22 µC/cm, 2E = 7.52 kV/cm). The significant electrical properties were closely related to the high activity of the BCZT powders, resulting from the rapid microwave-assisted sol-gel-hydrothermal process.

摘要

采用一种新型的微波辅助溶胶-凝胶-水热法快速合成了BaCaZrTiO（BCZT）粉末。研究了反应时间对产物结构、结晶度、纯度和形貌的影响。X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）的结果表明，在180℃的低合成温度下，即使在60分钟内也能获得BCZT粉末，这些粉末结晶良好，化学计量组成均匀，晶粒尺寸约为85纳米。由快速合成的粉末制备的BCZT陶瓷具有致密的微观结构和良好的电学性能（ε=9579，d=496 pC/N，2P=25.22µC/cm²，2E=7.52 kV/cm）。这些优异的电学性能与BCZT粉末的高活性密切相关，这是由快速的微波辅助溶胶-凝胶-水热过程导致的。