Studies on friction and transfer layer: role of surface texture

Menezes, PL and Kishore, * and Kailas, Satish V (2006) Studies on friction and transfer layer: role of surface texture. In: Tribology Letters, 24 (3). pp. 265-273.

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Abstract

Friction influences the nature of transfer layer formed at the interface between tool and metal during sliding. In the present investigation, experiments were conducted using “Inclined Scratch Tester” to understand the effect of surface texture of hard surfaces on coefficient of friction and transfer layer formation. EN8 steel flats were ground to attain surfaces of different textures with different roughness. Then super purity aluminium pins were scratched against the prepared steel flats. Scanning electron micrographs of the contact surfaces of pins and flats were used to reveal the morphology of transfer layer. It was observed that the coefficient of friction and the formation of transfer layer depend primarily on the texture of hard surfaces, but independent of surface roughness of hard surfaces. It was observed that on surfaces that promote plane strain conditions near the surface, the transfer of material takes place due to the plowing action of the asperities. But, on a surface that promotes plane stress conditions the transfer layer was more due to the adhesion component of friction. It was observed that the adhesion component increases for surfaces that have random texture but was constant for the other surfaces

Item Type:	Journal Article
Publication:	Tribology Letters
Publisher:	Springer
Additional Information:	Copyright of this article belongs to Springer.
Keywords:	friction;surface texture;inclined scratch;transfer layer.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	03 Aug 2010 05:07
Last Modified:	19 Sep 2010 06:12
URI:	http://eprints.iisc.ac.in/id/eprint/30749

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