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Synthesis, Microstructure and Wear Resistance of High-Entropy (Ti1/6V1/6Nb1/6Ta1/6Mo1/3)C Ceramics
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Hao CHEN1, Zihao WU1, Shubo ZHANG1, Meiling LIU1, 2, Wanxiu HAI1, 2, Yuhong CHEN1, 2, Wenzhou SUN1, 2
Journal of the Chinese Ceramic Society | 2022, 50(6) : 1504 - 1511
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Journal of the Chinese Ceramic Society | 2022, 50(6): 1504-1511
• Research Articles •
Synthesis, Microstructure and Wear Resistance of High-Entropy (Ti1/6V1/6Nb1/6Ta1/6Mo1/3)C Ceramics
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Hao CHEN1, Zihao WU1, Shubo ZHANG1, Meiling LIU1, 2, Wanxiu HAI1, 2, Yuhong CHEN1, 2, Wenzhou SUN1, 2
Affiliations
  • 1.College of Materials Science and Engineering, North Minzu University, Yinchuan 750021, China
  • 2.Key Laboratory of Powder Materials & Advanced Ceramics, North Minzu University, Yinchuan 750021, China

    • CHEN Hao (1995-), male, Master candidate. E-mail:

About Author:

CHEN Hao (1995-), male, Master candidate. E-mail:

Published: 2022-06-20 doi: 10.14062/j.issn.0454-5648.20211150
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Transition metal carbide ceramics are typical representatives of ultra-high temperature ceramics with extremely high melting point and hardness. However, the toughness and wear resistance need to be improved. Based on the high-entropy theory, a multi-carbides solid solution, i.e., high-entropy carbides, has a higher melting point, a good toughness and superior friction/wear characteristics. In this paper, (Ti1/6V1/6Nb1/6Ta1/6Mo1/3)C high-entropy ceramics were prepared via spark plasma sintering (SPS) at 1 600-2 100 ℃, and the densification behavior, phase composition, microstructure, mechanical properties and wear resistance were investigated. The results show that (Ti1/6V1/6Nb1/6Ta1/6Mo1/3)C high-entropy ceramics with a single-phase face-centered cubic structure can be obtained by sintering at 1 700 ℃. The relative density of the high-entropy ceramics is greater than 98% at ≥1 900 ℃. The grain size increases and the elemental distribution becomes uniform as the sintering temperature increases from 1 700 ℃ to 2 100 ℃. The grain boundary sliding and oxide impurities (TiO2) aggregation occur at grain boundaries. The dislocations appear in grains. The optimal mechanical properties of the high-entropy ceramics prepared by sintering at 2 100 ℃ can be obtained, i.e., the Vickers hardness of 20 GPa, elastic modulus of 431 GPa and fracture toughness of 4.46 MPa·m1/2, respectively, and the average specific wear rate is 5×10-7 mm3/(N·m), showing a superior wear resistance.

high-entropy ceramic  /  spark plasma sintering  /  microstructure  /  wear resistance
陈浩, 伍子豪, 张舒博, 刘美玲, 海万秀, 陈宇红, 孙文周. (Ti1/6V1/6Nb1/6Ta1/6Mo1/3)C高熵陶瓷的制备、微观结构与抗磨损性能. 硅酸盐学报, 2022 , 50 (6) : 1504 -1511 . DOI: 10.14062/j.issn.0454-5648.20211150
Hao CHEN, Zihao WU, Shubo ZHANG, Meiling LIU, Wanxiu HAI, Yuhong CHEN, Wenzhou SUN. Synthesis, Microstructure and Wear Resistance of High-Entropy (Ti1/6V1/6Nb1/6Ta1/6Mo1/3)C Ceramics[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (6) : 1504 -1511 . DOI: 10.14062/j.issn.0454-5648.20211150
Appendix
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Year 2022 volume 50 Issue 6
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Article Info
doi: 10.14062/j.issn.0454-5648.20211150
  • Receive Date：2021-12-27
  • Online Date：2026-10-22
  • Published：2022-06-20
Article Data
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History
  • Received：2021-12-27
  • Revised：2022-01-21
Funding
Affiliations
    1.College of Materials Science and Engineering, North Minzu University, Yinchuan 750021, China
    2.Key Laboratory of Powder Materials & Advanced Ceramics, North Minzu University, Yinchuan 750021, China

Corresponding:

HAI Wanxiu (1983-), female, Ph.D., Associate Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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