A comparative study of the tribological performance of ferrofluids and magnetorheological fluids within steel-steel point contacts

被引：48

作者：

Shahrivar, K. ^{[1
]}

Ortiz, A. L. ^{[2
]}

de Vicente, J. ^{[1
]}

机构：

[1] Univ Granada, Fac Sci, Dept Appl Phys, E-18071 Granada, Spain

[2] Univ Extremadura, Dept Mech Energy & Mat Engn, Badajoz, Spain

来源：

TRIBOLOGY INTERNATIONAL | 2014年 / 78卷

关键词：

Tribology; Magnetorheology; Ferrofluids; Magnetorheological fluids; WEAR; FRICTION; FLOW;

D O I：

10.1016/j.triboint.2014.05.008

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The lubricating properties of two different magnetic colloids were evaluated both in the absence and presence of external magnetic fields under sliding friction using the ball-on-three-plates geometry and stainless steel-steel point contacts. Specifically, the magnetic colloids studied were commercially-available ferrofluids (i.e., low concentration dispersions of nanosized magnetic particles) and magnetorheological fluids (i.e., high concentration dispersions of microsized magnetic particles). To evaluate the wear damage, the wear scar on the steel plates was examined by optical microscopy and scanning electron microscopy. Experimental results demonstrate a clearly lower friction coefficient and wear damage under lubrication with the ferrofluid, indicating that the effect of particle concentration in the magnetic dispersions dominate over that of particle size. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：125 / 133

页数：9

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