Comparative Study of the Friction Behavior of Functionalized Graphene Oxide Additives Under Electric Stimulations
Electro-regulated friction is a widely adopted approach for reducing friction, with graphene oxide (GO) emerging as a promising lubricating additive due to its electro-responsive frictional behaviour. However, with the wide variety of functionalized GO additives available, each exhibiting distinct p...
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MDPI AG
2024-12-01
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| author | Linghao Zhang Qiuyu Shi Xiangyu Ge |
| author_facet | Linghao Zhang Qiuyu Shi Xiangyu Ge |
| author_sort | Linghao Zhang |
| collection | DOAJ |
| description | Electro-regulated friction is a widely adopted approach for reducing friction, with graphene oxide (GO) emerging as a promising lubricating additive due to its electro-responsive frictional behaviour. However, with the wide variety of functionalized GO additives available, each exhibiting distinct properties, it remains unclear which type demonstrates the most effective electro-regulated friction-reducing performance, limiting their broader industrial application. In this study, the frictional behaviour of three functionalized GO additives under electric stimulation was investigated along with an analysis of the corresponding worn surfaces. The findings reveal the role of functional groups in determining the tribological performance of functionalized GO additives and the mechanism of electric stimulation. Notably, the formation of ester groups during the friction process of GO-OH enhances the adsorption of GO additives onto steel surfaces, resulting in superior friction-reducing properties. Under lubrication with GO-OH additives, negative electric stimulation promotes the generation of ester groups and transitions the lubrication regime to mixed lubrication, thereby contributing to friction reduction. This work provides new insights into the tribological performance of functionalized GO additives and the mechanisms underlying their electro-regulated behaviours, laying a foundation for the design of GO additives with superior lubrication performance for practical engineering applications. |
| format | Article |
| id | doaj-art-e64cec31125847feb6b88e3eb9e2fa0c |
| institution | DOAJ |
| issn | 2075-4442 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj-art-e64cec31125847feb6b88e3eb9e2fa0c2025-08-20T02:53:26ZengMDPI AGLubricants2075-44422024-12-01121245510.3390/lubricants12120455Comparative Study of the Friction Behavior of Functionalized Graphene Oxide Additives Under Electric StimulationsLinghao Zhang0Qiuyu Shi1Xiangyu Ge2School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaChina Electric Power Research Institute Co., Ltd., Beijing 102209, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaElectro-regulated friction is a widely adopted approach for reducing friction, with graphene oxide (GO) emerging as a promising lubricating additive due to its electro-responsive frictional behaviour. However, with the wide variety of functionalized GO additives available, each exhibiting distinct properties, it remains unclear which type demonstrates the most effective electro-regulated friction-reducing performance, limiting their broader industrial application. In this study, the frictional behaviour of three functionalized GO additives under electric stimulation was investigated along with an analysis of the corresponding worn surfaces. The findings reveal the role of functional groups in determining the tribological performance of functionalized GO additives and the mechanism of electric stimulation. Notably, the formation of ester groups during the friction process of GO-OH enhances the adsorption of GO additives onto steel surfaces, resulting in superior friction-reducing properties. Under lubrication with GO-OH additives, negative electric stimulation promotes the generation of ester groups and transitions the lubrication regime to mixed lubrication, thereby contributing to friction reduction. This work provides new insights into the tribological performance of functionalized GO additives and the mechanisms underlying their electro-regulated behaviours, laying a foundation for the design of GO additives with superior lubrication performance for practical engineering applications.https://www.mdpi.com/2075-4442/12/12/455graphene oxidefunctional groupselectric stimulationfriction reduction |
| spellingShingle | Linghao Zhang Qiuyu Shi Xiangyu Ge Comparative Study of the Friction Behavior of Functionalized Graphene Oxide Additives Under Electric Stimulations Lubricants graphene oxide functional groups electric stimulation friction reduction |
| title | Comparative Study of the Friction Behavior of Functionalized Graphene Oxide Additives Under Electric Stimulations |
| title_full | Comparative Study of the Friction Behavior of Functionalized Graphene Oxide Additives Under Electric Stimulations |
| title_fullStr | Comparative Study of the Friction Behavior of Functionalized Graphene Oxide Additives Under Electric Stimulations |
| title_full_unstemmed | Comparative Study of the Friction Behavior of Functionalized Graphene Oxide Additives Under Electric Stimulations |
| title_short | Comparative Study of the Friction Behavior of Functionalized Graphene Oxide Additives Under Electric Stimulations |
| title_sort | comparative study of the friction behavior of functionalized graphene oxide additives under electric stimulations |
| topic | graphene oxide functional groups electric stimulation friction reduction |
| url | https://www.mdpi.com/2075-4442/12/12/455 |
| work_keys_str_mv | AT linghaozhang comparativestudyofthefrictionbehavioroffunctionalizedgrapheneoxideadditivesunderelectricstimulations AT qiuyushi comparativestudyofthefrictionbehavioroffunctionalizedgrapheneoxideadditivesunderelectricstimulations AT xiangyuge comparativestudyofthefrictionbehavioroffunctionalizedgrapheneoxideadditivesunderelectricstimulations |