University of Oulu

Qiannan Li, Xiandong Hao, Yuxi Gui, Hongju Qiu, Yeqing Ling, Hewen Zheng, Mamdouh Omran, Lei Gao, Jin Chen, Guo Chen, Controlled sintering and phase transformation of yttria-doped tetragonal zirconia polycrystal material, Ceramics International, Volume 47, Issue 19, 2021, Pages 27188-27194, ISSN 0272-8842, https://doi.org/10.1016/j.ceramint.2021.06.139

Controlled sintering and phase transformation of yttria-doped tetragonal zirconia polycrystal material

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Author: Li, Qiannan1; Hao, Xiandong1; Gui, Yuxi1;
Organizations: 1Kunming Key Laboratory of Energy Materials Chemistry, Key Laboratory of Green-Chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming, 650500, PR China
2Faculty of Technology, University of Oulu, Finland
3Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming, 650500, PR China
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe2021081843613
Language: English
Published: Elsevier, 2021
Publish Date: 2023-06-21
Description:

Abstract

In this paper, 3 mol% yttria-doped tetragonal zirconia polycrystal material (3 mol% Y₂O₃–ZrO₂) was prepared using an optimised pressureless sintering process. The phase change and particle size distribution of Y₂O₃–ZrO₂ during sintering were studied, and the effect of sintering temperature on the properties of Y₂O₃–ZrO₂ was analysed. The raw materials and prepared samples were analysed using XRD, Raman spectroscopy, SEM, and Gaussian mathematical fitting. The results show that sintering encourages the transformation of the monoclinic phase into the tetragonal phase, thus improving the crystallinity of the sample. The relative content of the tetragonal phase in the sample increased from 57.43% to 99.80% after sintering at 1200 °C for 1 h. In the range of sintering temperatures studied in this paper (800–1200 °C), the zirconia material sintered at 1000 °C presented the lowest porosity and the best density.

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Series: Ceramics international
ISSN: 0272-8842
ISSN-E: 1873-3956
ISSN-L: 0272-8842
Volume: 47
Issue: 19
Pages: 27188 - 27194
DOI: 10.1016/j.ceramint.2021.06.139
OADOI: https://oadoi.org/10.1016/j.ceramint.2021.06.139
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Subjects:
Funding: Financial supports from the National Natural Science Foundation of China (No: 51764052), the scientific research foundation of Yunnan Education Department (No: 2021Y657) and Innovative Research Team (in Science and Technology) in University of Yunnan Province were sincerely acknowledged.
Copyright information: © 2021 Elsevier Ltd and Techna Group S.r.l. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
  https://creativecommons.org/licenses/by-nc-nd/4.0/