The Performance of Carbon-Based Nanomaterials in Different Base Oils and an Oil Blend

IF 3.1 3区工程技术 Q2 ENGINEERING, MECHANICAL

Lubricants Pub Date : 2024-03-13 DOI:10.3390/lubricants12030090

Jack Nasr, Diana Cursaru

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Abstract

Different carbon-based nanomaterials (fullerenes, graphene, SWCNTs, and SWCNT-COOH) were tested as additives in a base mineral oil, SN150; rapeseed oil (RSO); and a 50/50 by volume blend of the two using an HFRR (high-frequency reciprocating rig) tester for coefficient of friction (COF) and wear scar diameter (WSD) determinations and a four-ball tester for welding point determinations. The concentrations considered for the HFRR tests were 0.1, 0.5, 1, and 2 wt.%, while the concentration considered for the welding point tests was 0.5 wt.%. The results of the welding point tests showed that the addition of different nanoparticles made it so that welding occurred at much lower pressures compared to the pure oils. This is due to the hardness of the nanoparticles, which increases the local temperature and pressure at the contact points between them and the surfaces, causing welding to occur much sooner. The results of the HFRR tests showed a possible synergistic effect between the fullerenes and SWCNT-COOH and the oil blend, which may be attributed to possible interactions that occurred at a molecular level between the nanoparticles and the different molecules of the oil blend.

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碳基纳米材料在不同基础油和混合油中的性能

使用 HFRR（高频往复式钻机）测试仪测定摩擦系数 (COF) 和磨损痕直径 (WSD)，并使用四球测试仪测定焊点。高频往复仪测试的浓度为 0.1、0.5、1 和 2 wt.%，而焊点测试的浓度为 0.5 wt.%。焊点测试结果表明，与纯油相比，添加不同的纳米颗粒可使焊接在更低的压力下进行。这是由于纳米颗粒的硬度增加了其与表面接触点的局部温度和压力，从而使焊接更快发生。HFRR 测试结果表明，富勒烯和 SWCNT-COOH 与混合油之间可能存在协同效应，这可能是由于纳米颗粒与混合油的不同分子之间可能在分子水平上发生了相互作用。

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

Lubricants Engineering-Mechanical Engineering

CiteScore

3.60

自引率

25.70%

发文量

293

审稿时长

11 weeks

期刊介绍： This journal is dedicated to the field of Tribology and closely related disciplines. This includes the fundamentals of the following topics: -Lubrication, comprising hydrostatics, hydrodynamics, elastohydrodynamics, mixed and boundary regimes of lubrication -Friction, comprising viscous shear, Newtonian and non-Newtonian traction, boundary friction -Wear, including adhesion, abrasion, tribo-corrosion, scuffing and scoring -Cavitation and erosion -Sub-surface stressing, fatigue spalling, pitting, micro-pitting -Contact Mechanics: elasticity, elasto-plasticity, adhesion, viscoelasticity, poroelasticity, coatings and solid lubricants, layered bonded and unbonded solids -Surface Science: topography, tribo-film formation, lubricant–surface combination, surface texturing, micro-hydrodynamics, micro-elastohydrodynamics -Rheology: Newtonian, non-Newtonian fluids, dilatants, pseudo-plastics, thixotropy, shear thinning -Physical chemistry of lubricants, boundary active species, adsorption, bonding