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Sliding wear of Al2O3-SiC-(Al,Si) composites against a steel counterface

Ravikiran, A and Jayaram, V and Biswas, SK (1997) Sliding wear of Al2O3-SiC-(Al,Si) composites against a steel counterface. In: Journal of the American Ceramic Society, 80 (1). pp. 219-224.

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1151-...

Abstract

The sliding-wear behavior of Al2O3-SiC-Al composites prepared by melt oxidation against a steel counterface has been recorded in a pin-on-disk machine. At high speeds and pressures (10 m/s, 20 MPa), friction and wear appear to be principally controlled by the in-situ formation of an interfacial film that consists of a layer of Fe3O4. The formation of this him is examined as a function of sliding speed, lubrication, and composite microstructure. A model is proposed in which high surface temperatures cause the preferential extrusion of aluminum from the composite onto the pin/disk interface. This promotes the adhesive pickup of iron and its oxidation to form a stable tribologically beneficial layer of Fe3O4.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to John Wiley and Sons.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Ms V Mangala
Date Deposited: 03 Aug 2011 10:31
Last Modified: 03 Aug 2011 10:31
URI: http://eprints.iisc.ac.in/id/eprint/38455

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