低粘度纳米润滑剂的摩擦学改进：作为添加剂的 MoO3、MoS2、WS2 和 WC 纳米粒子

IF 3.1 3区工程技术 Q2 ENGINEERING, MECHANICAL

Lubricants Pub Date : 2024-03-10 DOI:10.3390/lubricants12030087

José M. Liñeira del Río, Carlos Fernandes, Jorge H. O. Seabra

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引用次数: 0

摘要

这项研究的目的是研究作为 PAO4 添加剂的 MoO3、MoS2、WS2 和 WC 纳米粒子的摩擦学性能。与 PAO4 相比，0.1 wt% 的 MoS2 纳米润滑剂的摩擦力降低了 64%，而 0.1 wt% 的 MoS2 纳米润滑剂的磨损降低幅度最大：宽度减少了 62%，磨损面积减少了 97%。拉曼图谱和磨损销钉的粗糙度评估证实了摩擦学机制中的三膜形成和修补。轧辊滑动测试显示纳米润滑剂在纯滑动中的性能最佳，观察到 MoS2 纳米粒子在低速时具有出色的抗摩擦能力，这表明纳米粒子的使用在边界润滑中至关重要。

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Tribological Improvement of Low-Viscosity Nanolubricants: MoO3, MoS2, WS2 and WC Nanoparticles as Additives

The aim of this research is studying the tribological performance of MoO3, MoS2, WS2 and WC nanoparticles as additives of PAO4. Pure sliding tribological tests were performed at 120 °C, finding outstanding friction and wear reductions in comparison with the PAO4, with maximum friction reductions of 64% for the 0.1 wt% MoS2 nanolubricant and greatest wear decreases for 0.1 wt% MoS2 nanolubricant: a width reduction of 62% and a worn area decrease of 97%. Raman mapping and a roughness evaluation of the worn pins confirmed the tribofilm formation and mending as tribological mechanisms. Rolling–sliding tests were conducted with best nanolubricants performance in pure sliding, observing excellent antifriction capabilities of MoS2 nanoparticles at low speeds, indicating that the use of nanoparticles is vital in boundary lubrication.

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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