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Weiwei Huang, Jiajia Lu, Yanqiong Zhang, Mamdouh Omran, Lei Gao, Jin Chen, Guo Chen, Research on the tetragonal phase content and microstructure of microwave-assisted sintering Y-PSZ system doped Bi2O3, Journal of Materials Research and Technology, Volume 23, 2023, Pages 2136-2146, ISSN 2238-7854,

Research on the tetragonal phase content and microstructure of microwave-assisted sintering Y-PSZ system doped Bi₂O₃

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Author: Huang, Weiwei1; Lu, Jiajia1; Zhang, Yanqiong1;
Organizations: 1Kunming Key Laboratory of Energy Materials Chemistry, Yunnan Minzu University, Kunming 650500, Yunnan, PR China
2Process Metallurgy Research Group, Faculty of Technology, University of Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 3.2 MB)
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Language: English
Published: Elsevier, 2023
Publish Date: 2023-03-23


Partially stabilized Y₂O₃–ZrO₂ (Y-PSZ) is often used as a material in the field of oxygen sensors and batteries. However, the presence of a tetragonal phase will seriously reduce the conductivity of Y-PSZ materials. As a sintering aid, Bi₂O₃ can be used to sinter materials with high oxygen ion conductivity at low temperatures. It is the first choice for the Y-PSZ doped system. A new microwave sintering technique prepared Bi₂O₃–Y-PSZ powders. The effects of doping amount of Bi₂O₃ on the microstructure, phase transition, and tetragonal phase content of Y-PSZ during sintering were researched. The results displayed that doping Bi₂O₃ improved the tetragonal phase content of the ZrO₂. The tetragonal phase content of the samples increased from 59.72% to 94.69% after sintering at 750 °C for 1 h. After doping Bi₂O₃, the aggregation of the samples reduced gradually, and the particles dispersed evenly. The average particle sizes of raw material and samples doped with different amounts of Bi₂O₃ were 0.0794 μm, 0.0638 μm, 0.0629 μm, 0.0794 μm, 0.1116 μm, respectively. Therefore, in the doping amount (1 mol%-4 mol%), the Bi₂O₃ doped Y-PSZ system with 2 mol% has the highest tetragonal phase content, the best dispersion, the smallest average particle size, and the most uniform particle distribution.

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Series: Journal of materials research and technology
ISSN: 2238-7854
ISSN-E: 2214-0697
ISSN-L: 2238-7854
Volume: 23
Pages: 2136 - 2146
DOI: 10.1016/j.jmrt.2023.01.157
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: Financial supports from the National Natural Science Foundation of China (No: 51764052) and the Innovative Research Team (in Science and Technology) in University of Yunnan Province were sincerely acknowledged.
Copyright information: © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (