Abstract
The load-carrying capacity, anti-wear and friction reduction properties of two sulfonamide derivatives added to a synthetic lubricant (diester) were evaluated using a four-ball test machine. The results indicate that both additives possess good load-carrying capacities and excellent anti-wear and friction reduction properties. The surface topography of the rubbed surface was investigated by scanning electron microscopy, and the chemical nature of the anti-wear films generated on the steel counter-face was investigated by X-ray photoelectron spectroscopy. Surface analysis results show that a stable lubricating film consisting of the reaction layer and adsorption layer was formed on the worn surface. Copyright © 2006 John Wiley & Sons, Ltd.
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