Solvent-free carbon sphere nanofluids towards intelligent lubrication regulation
Abstract By simply switching the electrical circuit installed on steel/steel contact, the tribological behaviors of nanofluids (NFs) can be regulated in real time, thereby achieving the desired performance of friction reduction and wear resistance. Herein, solvent-free carbon spherical nanofluids (C...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2023-05-01
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| Series: | Friction |
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| Online Access: | https://doi.org/10.1007/s40544-023-0737-7 |
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| _version_ | 1849686067056214016 |
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| author | Sheng Zhang Wen Li Xiaoliang Ma Xiaoqiang Fan Minhao Zhu |
| author_facet | Sheng Zhang Wen Li Xiaoliang Ma Xiaoqiang Fan Minhao Zhu |
| author_sort | Sheng Zhang |
| collection | DOAJ |
| description | Abstract By simply switching the electrical circuit installed on steel/steel contact, the tribological behaviors of nanofluids (NFs) can be regulated in real time, thereby achieving the desired performance of friction reduction and wear resistance. Herein, solvent-free carbon spherical nanofluids (C-NFs) were successfully prepared for intelligent lubrication regulation. C-NFs with excellent lubrication performance can immediately reduce the coefficient of friction (COF) despite applying a weak electric potential (1.5 V). Moreover, polyethylene glycol 400 (PEG400) containing 5.0 wt% C-NFs remained responsive to electrical stimulation under the intermittent voltage application with an average coefficient of friction (ACOF) reduction of 20.8% over PEG400. Such intelligent lubrication regulation of C-NFs under an external electric field (EEF) mainly depends on the orderly arranged double-electric adsorption film of ion canopy-adsorbed carbon spheres (CSs). The intermittent electrical application can continuously reinforce the adsorption film and its durability for real-time controlling the sliding interfaces. Electrical-stimulation-responsive intelligent lubricants provide a new technical support for realizing intelligent stepless control of devices. |
| format | Article |
| id | doaj-art-bb860ba9e7654e28acf3e5457f541aef |
| institution | DOAJ |
| issn | 2223-7690 2223-7704 |
| language | English |
| publishDate | 2023-05-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Friction |
| spelling | doaj-art-bb860ba9e7654e28acf3e5457f541aef2025-08-20T03:22:50ZengTsinghua University PressFriction2223-76902223-77042023-05-011219510910.1007/s40544-023-0737-7Solvent-free carbon sphere nanofluids towards intelligent lubrication regulationSheng Zhang0Wen Li1Xiaoliang Ma2Xiaoqiang Fan3Minhao Zhu4Tribology Research Institute, School of Mechanical Engineering, Southwest Jiaotong UniversityKey Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong UniversityKey Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong UniversityKey Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong UniversityTribology Research Institute, School of Mechanical Engineering, Southwest Jiaotong UniversityAbstract By simply switching the electrical circuit installed on steel/steel contact, the tribological behaviors of nanofluids (NFs) can be regulated in real time, thereby achieving the desired performance of friction reduction and wear resistance. Herein, solvent-free carbon spherical nanofluids (C-NFs) were successfully prepared for intelligent lubrication regulation. C-NFs with excellent lubrication performance can immediately reduce the coefficient of friction (COF) despite applying a weak electric potential (1.5 V). Moreover, polyethylene glycol 400 (PEG400) containing 5.0 wt% C-NFs remained responsive to electrical stimulation under the intermittent voltage application with an average coefficient of friction (ACOF) reduction of 20.8% over PEG400. Such intelligent lubrication regulation of C-NFs under an external electric field (EEF) mainly depends on the orderly arranged double-electric adsorption film of ion canopy-adsorbed carbon spheres (CSs). The intermittent electrical application can continuously reinforce the adsorption film and its durability for real-time controlling the sliding interfaces. Electrical-stimulation-responsive intelligent lubricants provide a new technical support for realizing intelligent stepless control of devices.https://doi.org/10.1007/s40544-023-0737-7solvent-free carbon spherical nanofluids (C-NFs)intelligent lubrication regulationlubrication performanceadsorption film |
| spellingShingle | Sheng Zhang Wen Li Xiaoliang Ma Xiaoqiang Fan Minhao Zhu Solvent-free carbon sphere nanofluids towards intelligent lubrication regulation Friction solvent-free carbon spherical nanofluids (C-NFs) intelligent lubrication regulation lubrication performance adsorption film |
| title | Solvent-free carbon sphere nanofluids towards intelligent lubrication regulation |
| title_full | Solvent-free carbon sphere nanofluids towards intelligent lubrication regulation |
| title_fullStr | Solvent-free carbon sphere nanofluids towards intelligent lubrication regulation |
| title_full_unstemmed | Solvent-free carbon sphere nanofluids towards intelligent lubrication regulation |
| title_short | Solvent-free carbon sphere nanofluids towards intelligent lubrication regulation |
| title_sort | solvent free carbon sphere nanofluids towards intelligent lubrication regulation |
| topic | solvent-free carbon spherical nanofluids (C-NFs) intelligent lubrication regulation lubrication performance adsorption film |
| url | https://doi.org/10.1007/s40544-023-0737-7 |
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