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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (6): 2104-2112.DOI: 10.16552/j.cnki.issn1001-1625.2025.1200

• 陶瓷 • 上一篇    下一篇

不同烧结温度下TiO2掺杂对YSZ陶瓷强度的影响

张宏佳1(), 冯晋阳1(), 程凯新1, 张强1, 郝小勇2   

  1. 1.武汉理工大学硅酸盐科学与先进建材全国重点实验室,武汉 430070
    2.福瑞思(旌德)精细新材料有限公司,宣城 242699
  • 收稿日期:2025-12-01 修订日期:2026-01-26 出版日期:2026-06-15 发布日期:2026-07-14
  • 通信作者: 冯晋阳,博士,副研究员。E-mail:fjy@whut.edu.cn
  • 作者简介:张宏佳(1990—),男,硕士研究生。主要从事复合陶瓷材料方面的研究。E-mail:982922328@qq.com
  • 基金资助:
    湖北省重点研发项目(2020BAB061);国家自然科学基金(22075221);国家自然科学基金(52472248)

Effect of TiO2 Doping on Strength of YSZ Ceramics at Different Sintering Temperatures

ZHANG Hongjia1(), FENG Jinyang1(), CHENG Kaixin1, ZHANG Qiang1, HAO Xiaoyong2   

  1. 1.State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China
    2.Freds (Jingde) Fine New Materials Limited Company,Xuancheng 242699,China
  • Received:2025-12-01 Revised:2026-01-26 Published:2026-06-15 Online:2026-07-14

摘要:

氧化钇稳定氧化锆(YSZ)陶瓷因高强度、耐高温和生物相容性优异而成为机械、电子等领域的重要材料,但其烧结温度过高导致能耗与成本攀升,在保证性能前提下降低烧结温度已成为当前研究的热点。本文采取常压烧结法在不同烧结温度下制备了不同TiO2掺量的YSZ陶瓷,系统研究了在不同烧结温度下TiO2掺量对YSZ陶瓷致密性、相组成和力学性能的影响。结果表明,TiO2的掺入可以降低YSZ陶瓷的烧结温度,促进晶粒生长和烧结致密化,有利于四方相氧化锆的稳定。在较低烧结温度(1 350、1 400 ℃)时,YSZ陶瓷的抗折强度随TiO2掺量(0.5%~0.7%,摩尔分数)的提高呈先降低后增强趋势,7.0%TiO2掺量的YSZ陶瓷的抗折强度最高,分别为530.4和576.3 MPa。在较高烧结温度(1 450、1 500 ℃)时,微量TiO2(0.5%~1.0%)的掺入可提高YSZ陶瓷的抗折强度,而随着TiO2掺量的提高,YSZ陶瓷的抗折强度总体呈逐渐下降的趋势。其中1 450 ℃下1.0% TiO2掺量的YSZ陶瓷抗折强度为660.7 MPa,1 500 ℃下0.5% TiO2掺量的YSZ陶瓷抗折强度为633.1 MPa。

关键词: TiO2, YSZ, 相对密度, 抗折强度, 相组成, 晶粒尺寸

Abstract:

Yttria stabilized zirconia (YSZ) ceramics have emerged as an important material in mechanical and electronic applications owing to their high strength, excellent high-temperature resistance and good biocompatibility. However, the excessively high sintering temperature results in high energy consumption and costs. Therefore, the current research focus on finding ways to lower the sintering temperature while maintaining performance. YSZ ceramics with varying TiO2 content were prepared by atmospheric pressure sintering at different temperatures. The effect of TiO2 content on the densification, phase composition and mechanical properties of YSZ ceramics at different sintering temperatures was systematically studied. The results show that the doping of TiO2 can reduce the sintering temperature of YSZ ceramics, promote grain growth and sintering densification, and is beneficial to stabilize tetragonal phase zirconia. At lower sintering temperatures (1 350, 1 400 ℃), the flexural strength of YSZ ceramics decreases first and then increases with increasing TiO2 content (0.5%~7.0%, mole fraction). The flexural strength of YSZ ceramics with 7.0% TiO2 is the highest, reaching 530.4 and 576.3 MPa, respectively. At higher sintering temperatures (1 450, 1 500 ℃), flexural strength generally declines with increasing TiO2 content, and only trace content (0.5%~1.0%) exhibiting a strengthening effect. Specifically, the flexural strength of YSZ ceramics doping with 1.0% TiO2 at 1 450 ℃ is 660.7 MPa, and that of YSZ ceramics doping with 0.5% TiO2 at 1 500 ℃ is 633.1 MPa.

Key words: TiO2, YSZ, relative density, flexural strength, phase composition, grain size

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