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TECHNICAL PAPERS

Lubrication of Rough Surfaces by a Boundary Film-Forming Viscosity Modifier Additive

[+] Author and Article Information
R. P. Glovnea, A. V. Olver, H. A. Spikes

Tribology Section, Department of Mechanical Engineering, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom

J. Tribol 127(1), 223-229 (Feb 07, 2005) (7 pages) doi:10.1115/1.1828069 History: Received December 09, 2003; Revised June 08, 2004; Online February 07, 2005
Copyright © 2005 by ASME
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References

Figures

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Minimum film thickness for the base oil and polymer solution with a steel ball having model roughness
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Film thickness distribution in rough steel ball contact lubricated by base oil and polymer solution at two entrainment speeds
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Variation of coefficient of friction with entrainment speed at 50% slide-roll-ratio for smooth steel disk surface
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Variation of coefficient of friction with entrainment speed at 50% slide-roll-ratio for rough steel disk surface
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Comparison of average film thickness for base oil and polymer solution with a steel ball having random roughness
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Optical interference image of lubricated, steel ball contact having random roughness (the arrow indicates the rolling direction)
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Film-forming properties of base oil and polymer solution in pure rolling contact with a model roughness ball (♦ base oil, □ OCP-D solution)
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Film-forming properties of base oil and polymer solution in pure rolling contact with chromium-plated balls
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Film-forming properties of base oil and polymer solution in pure rolling contact with steel balls
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Schematic diagram of the friction measurement rig
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Map of random rough ball surface measured with an optical profiler
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Map of model rough ball surface measured with an optical profiler

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