Metal deficient AlB2-type(Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)1-6B2 high-entropy diborides with high hardness

被引：1
|
作者：
Yang, Wuzhang [1 ,2 ,3 ]
Zhu, Qinqing [1 ,2 ,3 ]
Xiao, Guorui [2 ,3 ,4 ]
Ren, Zhi [2 ,3 ]
机构：
[1] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China
[2] Westlake Univ, Sch Sci, Dept Phys, 18 Shilongshan Rd, Hangzhou 310024, Peoples R China
[3] Westlake Inst Adv Study, Inst Nat Sci, 18 Shilongshan Rd, Hangzhou 310024, Peoples R China
[4] Zhejiang Univ, Sch Phys, Hangzhou 310058, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2023年 / 49卷 / 03期
关键词：
High entropy diborides; AlB2-type; Metal deficiency; Vickers hardness; ZR;
D O I：
10.1016/j.ceramint.2022.11.100
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We report the synthesis and characterization of metal deficient (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)1-6B2 high-entropy diborides (HEBs). A single homogeneous AlB2-type phase is successfully obtained over the 6 range of 0.03 <= 6 <= 0.18. With increasing 6, the unit-cell volume exhibits a nonmonotonic variation with a maximum at 6 = 0.07. These metal-deficient HEBs possess high Vickers hardness of 16.6-18.9 GPa at a load of 9.8 N and their phase stability is attributed to the increased mixing entropy. Our results not only present the first series of metal-deficient AlB2-type HEBs, but also suggest the existence of similar multicomponent diborides.
引用
收藏
页码：5522 / 5526
页数：5
相关论文
共 50 条
  • [41] (Ti0.2V0.2Cr0.2Nb0.2Ta0.2)2AlC-(Ti0.2V0.2Cr0.2Nb0.2Ta0.2)C high-entropy ceramics with low thermal conductivity
    Liu, Chao
    Yang, Yue-yang
    Zhou, Zhi-fang
    Nan, Ce-wen
    Lin, Yuan-hua
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2022, 105 (04) : 2764 - 2771
  • [42] Influence of novel carbon sources on microstructure and properties of (Ti0.2Zr0.2Hf0.2Ta0.2Nb0.2)C high-entropy carbide ceramic
    Li, Saisai
    Wu, Qianfang
    Zhan, Jie
    Chen, Ruoyu
    Mao, Aiqin
    Zheng, Cuihong
    Wen, Haiming
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2024, 44 (04) : 1890 - 1897
  • [43] Oxidation behavior of (Hf0.2Zr0.2Ta0.2Nb0.2Ti0.2)C high-entropy ceramics at 1073-1473 K in air
    Ye, Beilin
    Wen, Tongqi
    Liu, Da
    Chu, Yanhui
    CORROSION SCIENCE, 2019, 153 : 327 - 332
  • [44] Mechanical, Thermal Properties, and Extreme Phase Stability of High-Entropy Diborides (V0.2Nb0.2Ta0.2Cr0.2W0.2)B2
    Long, Haidong
    Guan, Shixue
    Zhang, Zhengang
    Wang, Yipeng
    Liang, Wenjia
    Chen, Jie
    Zhang, Ruike
    He, Peihong
    Ran, Ling
    Yang, Peng
    Peng, Fang
    INORGANIC CHEMISTRY, 2024, : 12721 - 12729
  • [45] SiC-(Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)B2 composite ceramics prepared by fast hot-press sintering
    Duan, Mantang
    Bogomol, Iurii
    JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY, 2025,
  • [46] Oxidation behavior of Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2C-MxC(M=Ti,Zr,Hf,Nb,Ta) composite ceramic at high temperature
    徐帅
    王韬
    王新刚
    吴璐
    方忠强
    葛芳芳
    蒙萱
    廖庆
    魏金春
    李炳生
    Chinese Physics B, 2023, (06) : 726 - 734
  • [47] Improved damage tolerance and oxidation resistance of (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)B2-SiC by introducing chopped carbon fibers
    Huang, Feilong
    Wang, Hailong
    Fang, Cheng
    Li, Mingliang
    Shao, Gang
    Zhu, Jinpeng
    Zhou, Yanchun
    JOURNAL OF ADVANCED CERAMICS, 2024, 13 (01): : 101 - 112
  • [48] Pressure-driven grain fusion and mechanical properties improvement of high-entropy (Ti0.2Zr0.2Nb0.2Hf0.2Ta0.2)C ceramics
    Chen, Wang
    Shen, Pengfei
    Li, Wei
    Ma, Shuailing
    Lian, Min
    Wei, Xinmiao
    Dan, Yaqian
    Zhao, Xingbin
    Qi, Mengyao
    Cui, Tian
    Riedel, Ralf
    MATERIALS & DESIGN, 2025, 253
  • [49] Mechanical properties and deformation mechanisms of (Ti0.2Zr0.2Nb0.2Hf0.2Ta0.2)C high-entropy ceramics characterized by nanoindentation and scratch tests
    Jin, Xiaochao
    Hou, Cheng
    Zhao, Yuxiang
    Wang, Zhuoran
    Wang, Jierui
    Fan, Xueling
    CERAMICS INTERNATIONAL, 2022, 48 (23) : 35445 - 35451
  • [50] Exploring radiation damage in (Hf0.2Zr0.2Ta0.2Ti0.2Nb0.2)C high-entropy carbide ceramic: Integrating experimental and atomistic investigations
    Zhang, Gaowei
    Daghbouj, Nabil
    Almotasem, A. T.
    Fang, Zhongqiang
    Wang, Tao
    Zhang, Jian
    Zhang, Tongming
    Li, Jun
    Zhou, Junjun
    Xu, Shuai
    Wang, Renda
    Wu, Lu
    Ge, Fangfang
    Polcar, Tomas
    Han, Wentuo
    Li, Bingsheng
    INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2024, 123
12345