中国物理B ›› 2025, Vol. 34 ›› Issue (8): 86105-086105.doi: 10.1088/1674-1056/add00c

所属专题： SPECIAL TOPIC — Structures and properties of materials under high pressure

• • 上一篇    下一篇

Synergistic improvements in mechanical and thermal performance of TiB2 solid-solution-based composites

Zhuang Li(李壮), Cun You(由存), Zhihui Li(李志慧), Xuepeng Li(李雪鹏), Guiqian Sun(孙贵乾), Xinglin Wang(王星淋), Qi Jia(贾琪), Qiang Tao(陶强)†, and Pinwen Zhu(朱品文)‡   

  1. Synergetic Extreme Condition High-Pressure Science Center, State Key Laboratory of High Pressure and Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
  • 收稿日期:2025-02-26 修回日期:2025-04-08 接受日期:2025-04-24 出版日期:2025-07-17 发布日期:2025-08-05
  • 通讯作者: Qiang Tao, Pinwen Zhu E-mail:qiangtao@jlu.edu.cn;zhupw@jlu.edu.cn
  • 基金资助:
    The high-pressure experiments were conducted at the B1 station, Synergetic Extreme Condition User Facility (SECUF). The authors acknowledge funding support from the Program for the Development of Science and Technology of Jilin Province (Grant No. SKL202402004), the Jilin Province Major Science and Technology Program (Grant No. 20240211002GX), and the Open Research Fund of the Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education (Jilin Normal University, Grant No. 202405).

Synergistic improvements in mechanical and thermal performance of TiB2 solid-solution-based composites

Zhuang Li(李壮), Cun You(由存), Zhihui Li(李志慧), Xuepeng Li(李雪鹏), Guiqian Sun(孙贵乾), Xinglin Wang(王星淋), Qi Jia(贾琪), Qiang Tao(陶强)†, and Pinwen Zhu(朱品文)‡   

  1. Synergetic Extreme Condition High-Pressure Science Center, State Key Laboratory of High Pressure and Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
  • Received:2025-02-26 Revised:2025-04-08 Accepted:2025-04-24 Online:2025-07-17 Published:2025-08-05
  • Contact: Qiang Tao, Pinwen Zhu E-mail:qiangtao@jlu.edu.cn;zhupw@jlu.edu.cn
  • Supported by:
    The high-pressure experiments were conducted at the B1 station, Synergetic Extreme Condition User Facility (SECUF). The authors acknowledge funding support from the Program for the Development of Science and Technology of Jilin Province (Grant No. SKL202402004), the Jilin Province Major Science and Technology Program (Grant No. 20240211002GX), and the Open Research Fund of the Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education (Jilin Normal University, Grant No. 202405).

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摘要： Continuously improving the mechanical properties of ultra-high-temperature ceramics (UHTCs) is a key requirement for their future applications. However, the mechanical properties of conventional UHTCs, HfB$_{2}$ and ZrB$_{2}$, remain unsatisfactory among transition metal light-element (TMLE) compounds. TiB$_{2}$ has superior mechanical properties compared to both HfB$_{2}$ and ZrB$_{2}$, but suffers from inherent brittleness and limited oxidation resistance. In this work, low-content solid-solution strengthening was used to fabricate dense samples of Ti$_{x}$(Hf/Zr)$_{1-x}$B$_{2}$ (THZ) under high pressure and high temperature (HPHT). Compared to pure TiB$_{2}$, Ti$_{0.94}$(Hf/Zr)$_{0.06}$B$_{2}$ exhibits a significant 38.8% increase in oxidation resistance temperature (950 $^\circ$C), while Ti$_{0.91}$(Hf/Zr)$_{0.09}$B$_{2}$ shows a notable 28% enhancement in fracture toughness (5.8 MPa$\cdot$m$^{1/2}$). The synergistic effect of a dual-atom solid-solution results in local internal stress and anomalous lattice contraction. This lattice contraction helps resist oxygen invasion, thereby elevating the oxidation resistance threshold. Additionally, the internal stress induces crack deflection within individual grains, enhancing toughness through energy dissipation. This work provides a new strategy for fabricating robust UHTCs within TMLE systems, demonstrating significant potential for future high-temperature applications.

关键词: high pressure and high temperature, solid-solution strengthening, fracture toughness, oxidation resistance

Abstract: Continuously improving the mechanical properties of ultra-high-temperature ceramics (UHTCs) is a key requirement for their future applications. However, the mechanical properties of conventional UHTCs, HfB$_{2}$ and ZrB$_{2}$, remain unsatisfactory among transition metal light-element (TMLE) compounds. TiB$_{2}$ has superior mechanical properties compared to both HfB$_{2}$ and ZrB$_{2}$, but suffers from inherent brittleness and limited oxidation resistance. In this work, low-content solid-solution strengthening was used to fabricate dense samples of Ti$_{x}$(Hf/Zr)$_{1-x}$B$_{2}$ (THZ) under high pressure and high temperature (HPHT). Compared to pure TiB$_{2}$, Ti$_{0.94}$(Hf/Zr)$_{0.06}$B$_{2}$ exhibits a significant 38.8% increase in oxidation resistance temperature (950 $^\circ$C), while Ti$_{0.91}$(Hf/Zr)$_{0.09}$B$_{2}$ shows a notable 28% enhancement in fracture toughness (5.8 MPa$\cdot$m$^{1/2}$). The synergistic effect of a dual-atom solid-solution results in local internal stress and anomalous lattice contraction. This lattice contraction helps resist oxygen invasion, thereby elevating the oxidation resistance threshold. Additionally, the internal stress induces crack deflection within individual grains, enhancing toughness through energy dissipation. This work provides a new strategy for fabricating robust UHTCs within TMLE systems, demonstrating significant potential for future high-temperature applications.

Key words: high pressure and high temperature, solid-solution strengthening, fracture toughness, oxidation resistance

中图分类号:  (Structure of bulk crystals)

  • 61.50.-f
61.72.U- (Doping and impurity implantation) 62.20.-x (Mechanical properties of solids) 65.40.-b (Thermal properties of crystalline solids)