Enhanced electrical properties and Vickers hardness of calcium bismuth niobate ceramics by W/Co substituted at B-site

Fei Wang; Jia Yang; Qing Yang; Ning Chen; Xinji Yang; Mingyue Mo; Jie Xing; Zhi Tan; Zhongqing Tian; Fancheng Meng; Yuheng Guo; Huixing Lin; Jianguo Zhu

doi:10.1142/S2010135X24400198

Journal of Advanced Dielectrics (Aug 2024)

Enhanced electrical properties and Vickers hardness of calcium bismuth niobate ceramics by W/Co substituted at B-site

Fei Wang,
Jia Yang,
Qing Yang,
Ning Chen,
Xinji Yang,
Mingyue Mo,
Jie Xing,
Zhi Tan,
Zhongqing Tian,
Fancheng Meng,
Yuheng Guo,
Huixing Lin,
Jianguo Zhu

Affiliations

Fei Wang: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, P. R. China
Jia Yang: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, P. R. China
Qing Yang: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, P. R. China
Ning Chen: College of Materials Science and Engineering, Sichuan University, Chengdu 610064, P. R. China
Xinji Yang: College of Materials Science and Engineering, Sichuan University, Chengdu 610064, P. R. China
Mingyue Mo: College of Materials Science and Engineering, Sichuan University, Chengdu 610064, P. R. China
Jie Xing: College of Materials Science and Engineering, Sichuan University, Chengdu 610064, P. R. China
Zhi Tan: College of Materials Science and Engineering, Sichuan University, Chengdu 610064, P. R. China
Zhongqing Tian: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, P. R. China
Fancheng Meng: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, P. R. China
Yuheng Guo: School of Electronic Engineering, Chengdu Technological University, Chengdu 611730, P. R. China
Huixing Lin: Key Laboratory of Inorganic Functional Material and Device, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, P. R. China
Jianguo Zhu: College of Materials Science and Engineering, Sichuan University, Chengdu 610064, P. R. China

DOI: https://doi.org/10.1142/S2010135X24400198
Journal volume & issue: Vol. 14, no. 04

Abstract

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Calcium bismuth niobate (CBN) ceramic, as a core element of high-temperature piezoelectric sensors, has attracted widespread attention due to its high Curie temperature within the class of Aurivillius compounds. However, CBN usually faces two shortcomings: poor piezoelectric constant and low resistivity. In this work, CBN-based ceramics with donor–acceptor ions (W/Co) co-substituted at B-site were prepared by solid-state reaction method, and structure–property relationship of ceramics was studied in detail. Co-substitution of W/Co ions effectively improved the electrical property and hardness of CBN ceramics. CaBi2Nb[Formula: see text](W[Formula: see text]Co[Formula: see text]O9 exhibits enhanced electrical and mechanical properties including high resistivity of [Formula: see text]cm at 500°C, piezoelectric constant of [Formula: see text] pC/N and hardness value of [Formula: see text][Formula: see text]GPa. These values are two orders of magnitude, over two times, and 1.36 times higher than those of pure CBN ceramic, respectively. This work provides a reference for exploring other bismuth-layered structural ceramics.

Published in Journal of Advanced Dielectrics

ISSN: 2010-135X (Print); 2010-1368 (Online)
Publisher: World Scientific Publishing
Country of publisher: Singapore
LCC subjects: Science: Physics: Electricity and magnetism: Electricity
Website: http://www.worldscientific.com/worldscinet/jad

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