C60 filling-enabled tribological improvement of graphene in conformal contact with a rough substrate
Graphene has great potential in the field of solid lubricity due to its superlow friction and high wear resistance. However, the excellent tribological performance of graphene is degraded when it conformally contacts with a rough substrate. This work proposes a novel method to improve the tribologic...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Online Access: | https://hdl.handle.net/10356/170628 |
| _version_ | 1826120618233298944 |
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| author | Li, Jiahao Bai, Lichun Liu, Bo Tang, Xianqiong Peng, Jinfeng Zhou, Runhua Tan, Liming Peng, Yong |
| author2 | Energy Research Institute @ NTU (ERI@N) |
| author_facet | Energy Research Institute @ NTU (ERI@N) Li, Jiahao Bai, Lichun Liu, Bo Tang, Xianqiong Peng, Jinfeng Zhou, Runhua Tan, Liming Peng, Yong |
| author_sort | Li, Jiahao |
| collection | NTU |
| description | Graphene has great potential in the field of solid lubricity due to its superlow friction and high wear resistance. However, the excellent tribological performance of graphene is degraded when it conformally contacts with a rough substrate. This work proposes a novel method to improve the tribological performance of graphene on a rough Si/SiO2 substrate by filling grooves on the substrate surface with C60 molecules. When C60 filling is not performed, the friction force on the graphene surface increases rapidly at the groove edges where graphene presents large out-of-plane deformation due to its conformal contact with the substrate. Inspiringly, such high friction force is reduced by one order of magnitude when C60 filling is introduced to provide out-of-plane support to graphene for preventing its conformal contact with the substrate. Meanwhile, the high mechanical strength of C60 molecules enables a greater than 5-fold strengthening of the load-carrying capacity of graphene, which greatly improves its wear resistance on the rough substrate. These observations are helpful in promoting the tribological application of graphene by diminishing its conformal contact with the rough substrate. |
| first_indexed | 2024-10-01T05:19:23Z |
| format | Journal Article |
| id | ntu-10356/170628 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:19:23Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1706282023-09-25T01:16:32Z C60 filling-enabled tribological improvement of graphene in conformal contact with a rough substrate Li, Jiahao Bai, Lichun Liu, Bo Tang, Xianqiong Peng, Jinfeng Zhou, Runhua Tan, Liming Peng, Yong Energy Research Institute @ NTU (ERI@N) Engineering::Materials Graphene Tribological Improvement Graphene has great potential in the field of solid lubricity due to its superlow friction and high wear resistance. However, the excellent tribological performance of graphene is degraded when it conformally contacts with a rough substrate. This work proposes a novel method to improve the tribological performance of graphene on a rough Si/SiO2 substrate by filling grooves on the substrate surface with C60 molecules. When C60 filling is not performed, the friction force on the graphene surface increases rapidly at the groove edges where graphene presents large out-of-plane deformation due to its conformal contact with the substrate. Inspiringly, such high friction force is reduced by one order of magnitude when C60 filling is introduced to provide out-of-plane support to graphene for preventing its conformal contact with the substrate. Meanwhile, the high mechanical strength of C60 molecules enables a greater than 5-fold strengthening of the load-carrying capacity of graphene, which greatly improves its wear resistance on the rough substrate. These observations are helpful in promoting the tribological application of graphene by diminishing its conformal contact with the rough substrate. We acknowledge financial support of the Hunan Science Foundation for Distinguished Young Scholars of China (2021JJ10059), the Postgraduate Scientific Research Innovation Project of Hunan Province (CX20210233), the Engineering Research Center for Complex Trajectory Processing Technology and Equipment of Xiangtan University (FZGJ2020-009) and the National Natural Science Foundation of China (52075553, 12002295, 11802087). This work was supported in part by the High Performance Computing Center of Central South University. 2023-09-25T01:16:31Z 2023-09-25T01:16:31Z 2023 Journal Article Li, J., Bai, L., Liu, B., Tang, X., Peng, J., Zhou, R., Tan, L. & Peng, Y. (2023). C60 filling-enabled tribological improvement of graphene in conformal contact with a rough substrate. Carbon, 206, 157-165. https://dx.doi.org/10.1016/j.carbon.2023.02.016 0008-6223 https://hdl.handle.net/10356/170628 10.1016/j.carbon.2023.02.016 2-s2.0-85148326478 206 157 165 en Carbon © 2023 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Materials Graphene Tribological Improvement Li, Jiahao Bai, Lichun Liu, Bo Tang, Xianqiong Peng, Jinfeng Zhou, Runhua Tan, Liming Peng, Yong C60 filling-enabled tribological improvement of graphene in conformal contact with a rough substrate |
| title | C60 filling-enabled tribological improvement of graphene in conformal contact with a rough substrate |
| title_full | C60 filling-enabled tribological improvement of graphene in conformal contact with a rough substrate |
| title_fullStr | C60 filling-enabled tribological improvement of graphene in conformal contact with a rough substrate |
| title_full_unstemmed | C60 filling-enabled tribological improvement of graphene in conformal contact with a rough substrate |
| title_short | C60 filling-enabled tribological improvement of graphene in conformal contact with a rough substrate |
| title_sort | c60 filling enabled tribological improvement of graphene in conformal contact with a rough substrate |
| topic | Engineering::Materials Graphene Tribological Improvement |
| url | https://hdl.handle.net/10356/170628 |
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