High-performance multifunctional (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C high-entropy ceramic reinforced with low-loading 3D hybrid graphene–carbon nanotube
There has been growing interest in the high-entropy ceramic (HEC) recently owing to its tailorable compositions and microstructures, versatile properties, together with promising structural and functional applications. However, inferior fracture toughness (KIC) and damage tolerance restricted many p...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2023-02-01
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| Series: | Journal of Advanced Ceramics |
| Subjects: | |
| Online Access: | https://www.sciopen.com/article/10.26599/JAC.2023.9220688 |
| _version_ | 1797858539567316992 |
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| author | Jialin Sun Jun Zhao Yonghui Zhou Peng Zhai Xialun Yun Zhifu Huang Hui Zhang Guohua Zhang |
| author_facet | Jialin Sun Jun Zhao Yonghui Zhou Peng Zhai Xialun Yun Zhifu Huang Hui Zhang Guohua Zhang |
| author_sort | Jialin Sun |
| collection | DOAJ |
| description | There has been growing interest in the high-entropy ceramic (HEC) recently owing to its tailorable compositions and microstructures, versatile properties, together with promising structural and functional applications. However, inferior fracture toughness (KIC) and damage tolerance restricted many practical applications of the HEC. Herein, we addressed this challenge by incorporating a three-dimensional graphene–carbon nanotube (3D G–CNT) as toughening agent in (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C. The resulting enhanced 3D G–CNT/(Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C featured an outstanding toughness of 8.23 MPa·m1/2, while remaining superior strength (763 MPa) and hardness (24.7 GPa). An ultralow friction coefficient (0.15) coupled with an ultralow wear rate (w, 2.6×10−7 mm3/(N·m)) in the 3D G–CNT/(Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C was obtained primarily as a function of lubricating scrolls, in which two-dimensional (2D) graphene acted as a tribolayer, and one-dimensional (1D) carbon nanotubes acted as nano ball bearings embedded inside. Strikingly, the 3D G–CNT/(Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C exhibited rather low thermal conductivity (κ) yet excellent electrical conductivity (σ, 1.3×106 S/m) in comparison with the pure (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C. This study provided great potential for maximizing the physical and functional properties of the HEC for various applications. |
| first_indexed | 2024-04-09T21:16:09Z |
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| id | doaj.art-4799f340b66f4607b8a1a14a2060cdd3 |
| institution | Directory Open Access Journal |
| issn | 2226-4108 2227-8508 |
| language | English |
| last_indexed | 2024-04-09T21:16:09Z |
| publishDate | 2023-02-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj.art-4799f340b66f4607b8a1a14a2060cdd32023-03-28T09:05:19ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082023-02-0112234135610.26599/JAC.2023.9220688High-performance multifunctional (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C high-entropy ceramic reinforced with low-loading 3D hybrid graphene–carbon nanotubeJialin Sun0Jun Zhao1Yonghui Zhou2Peng Zhai3Xialun Yun4Zhifu Huang5Hui Zhang6Guohua Zhang7School of Mechanical, Electrical & Information Engineering, Shandong University (Weihai), Weihai 264209, ChinaKey Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, ChinaKey Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, ChinaSchool of Mechanical, Electrical & Information Engineering, Shandong University (Weihai), Weihai 264209, ChinaState Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, ChinaState Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, ChinaThere has been growing interest in the high-entropy ceramic (HEC) recently owing to its tailorable compositions and microstructures, versatile properties, together with promising structural and functional applications. However, inferior fracture toughness (KIC) and damage tolerance restricted many practical applications of the HEC. Herein, we addressed this challenge by incorporating a three-dimensional graphene–carbon nanotube (3D G–CNT) as toughening agent in (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C. The resulting enhanced 3D G–CNT/(Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C featured an outstanding toughness of 8.23 MPa·m1/2, while remaining superior strength (763 MPa) and hardness (24.7 GPa). An ultralow friction coefficient (0.15) coupled with an ultralow wear rate (w, 2.6×10−7 mm3/(N·m)) in the 3D G–CNT/(Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C was obtained primarily as a function of lubricating scrolls, in which two-dimensional (2D) graphene acted as a tribolayer, and one-dimensional (1D) carbon nanotubes acted as nano ball bearings embedded inside. Strikingly, the 3D G–CNT/(Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C exhibited rather low thermal conductivity (κ) yet excellent electrical conductivity (σ, 1.3×106 S/m) in comparison with the pure (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C. This study provided great potential for maximizing the physical and functional properties of the HEC for various applications.https://www.sciopen.com/article/10.26599/JAC.2023.9220688high-entropy ceramic (hec)three-dimensional graphene–carbon nanotube (3d g–cnt)tougheninglubricatingthermal conductivity (κ)/electrical conductivity (σ) |
| spellingShingle | Jialin Sun Jun Zhao Yonghui Zhou Peng Zhai Xialun Yun Zhifu Huang Hui Zhang Guohua Zhang High-performance multifunctional (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C high-entropy ceramic reinforced with low-loading 3D hybrid graphene–carbon nanotube Journal of Advanced Ceramics high-entropy ceramic (hec) three-dimensional graphene–carbon nanotube (3d g–cnt) toughening lubricating thermal conductivity (κ)/electrical conductivity (σ) |
| title | High-performance multifunctional (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C high-entropy ceramic reinforced with low-loading 3D hybrid graphene–carbon nanotube |
| title_full | High-performance multifunctional (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C high-entropy ceramic reinforced with low-loading 3D hybrid graphene–carbon nanotube |
| title_fullStr | High-performance multifunctional (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C high-entropy ceramic reinforced with low-loading 3D hybrid graphene–carbon nanotube |
| title_full_unstemmed | High-performance multifunctional (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C high-entropy ceramic reinforced with low-loading 3D hybrid graphene–carbon nanotube |
| title_short | High-performance multifunctional (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)C high-entropy ceramic reinforced with low-loading 3D hybrid graphene–carbon nanotube |
| title_sort | high performance multifunctional hf0 2nb0 2ta0 2ti0 2zr0 2 c high entropy ceramic reinforced with low loading 3d hybrid graphene carbon nanotube |
| topic | high-entropy ceramic (hec) three-dimensional graphene–carbon nanotube (3d g–cnt) toughening lubricating thermal conductivity (κ)/electrical conductivity (σ) |
| url | https://www.sciopen.com/article/10.26599/JAC.2023.9220688 |
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