Influence of graphene and multi-walled carbon nanotube additives on tribological behaviour of lubricants

IF 1 4区工程技术 Q4 ENGINEERING, MECHANICAL

International Journal of Surface Science and Engineering Pub Date : 2018-09-16 DOI:10.1504/IJSURFSE.2018.094773

R. Singh, A. Dixit, A. Sharma, A. Tiwari, V. Mandal, A. Pramanik

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引用次数: 19

Abstract

In the present study, the tribological performance of water-based emulsion (lubricant) was investigated by blending carbon fillers such as graphene nanoplatelets and multiwall carbon nanotubes using pin-on-disc tribometer. It was noticed that addition of GnP and MWCNT in water-based emulsion (conventional lubricant) increases the thermal conductivity and viscosity as compared to conventional lubricants. The nanolubricants were supplied with minimum quantity lubrication (MQL) technique at a constant flow rate and pressure in the sliding zone. The addition of 0.8 wt.% concentration of GnP showed 58.39% reduction in coefficient of friction and 61.80% reduction in wear depth compared to the conventional lubricant. Similarly, for 0.8 wt.% concentration of MWCNT showed 26.27% reduction in coefficient of friction and 47.35% reduction in wear depth compared to the conventional lubricant. The sliding surface micrographs were also investigated to explain the synergistic effect of nanoparticles.

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石墨烯和多壁碳纳米管添加剂对润滑剂摩擦学性能的影响

在本研究中，利用针盘式摩擦计，通过混合碳填料如石墨烯纳米片和多壁碳纳米管，研究了水基乳液(润滑剂)的摩擦学性能。我们注意到，在水基乳液(常规润滑剂)中加入GnP和MWCNT比常规润滑剂增加了导热性和粘度。在滑动区以恒定的流量和压力对纳米润滑剂进行最小量润滑(MQL)。与常规润滑油相比，添加浓度为0.8 wt.%的GnP可使摩擦系数降低58.39%，磨损深度降低61.80%。同样，当MWCNT浓度为0.8 wt.%时，与传统润滑油相比，摩擦系数降低26.27%，磨损深度降低47.35%。我们还研究了滑动表面显微图来解释纳米颗粒的协同作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Surface Science and Engineering 工程技术-材料科学：膜

CiteScore

1.60

自引率

25.00%

发文量

审稿时长

>12 weeks

期刊介绍： IJSurfSE publishes refereed quality papers in the broad field of surface science and engineering including tribology, but with a special emphasis on the research and development in friction, wear, coatings and surface modification processes such as surface treatment, cladding, machining, polishing and grinding, across multiple scales from nanoscopic to macroscopic dimensions. High-integrity and high-performance surfaces of components have become a central research area in the professional community whose aim is to develop highly reliable ultra-precision devices.