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Lubricity of an oil in water emulsion in metal cutting: The effect of hydrophilic/lypophilic balance of emulsifiers

Pottirayil, Anirudhan and Kailas, Satish V and Biswas, SK (2011) Lubricity of an oil in water emulsion in metal cutting: The effect of hydrophilic/lypophilic balance of emulsifiers. In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, 384 (1-3). pp. 323-330.

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Official URL: http://dx.doi.org/10.1016/j.colsurfa.2011.04.009

Abstract

A steel disc is cut using a single point tool. The coefficient of friction of the nascent cut surface is measured by a spherical steel pin situated in close proximity of the point of cutting. The tool, disc and the friction pin are immersed in an oil in water emulsion bath during the experiment. The purpose of the experiments conducted here is to record the effect of hydrophilic/lypophilic balance (HLB) of the emulsifier on the lubricity experienced in the cutting operation. The more lypophilic emulsifiers were found to give greater lubricity than what is recorded when the emulsifier is more hydrophilic. XPS and FTIR spectroscopy are used to explore the tribofilm generated on the nascent cut surface to indicate a possible rationale for the effect. (C) 2011 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science B.V.
Keywords: Emulsion;Emulsifier;Critical packing parameter;Friction
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 30 Aug 2011 06:38
Last Modified: 30 Aug 2011 06:38
URI: http://eprints.iisc.ernet.in/id/eprint/39950

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