Effect of residual compressive surface stress on severe wear of alumina-silicon carbide two-layered composites

Dancer, C.E.J. and Yahya, N.A. and Berndt, T. and Todd, R.I. and de Portu, G. (2014) Effect of residual compressive surface stress on severe wear of alumina-silicon carbide two-layered composites. Tribology International, 74. pp. 87-92. ISSN 0301-679X

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Abstract

Ceramics consisting of Al2O3 with a surface layer of Al2O3-10 vol% SiC have been fabricated by hot pressing. The residual compressive stress at the composite surface due to the difference in thermal expansion between the two layers has been measured experimentally by Cr3+ fluorescence microspectroscopy. The wear resistance in the severe wear regime of the two-layered samples was higher than those of a reference single-layer Al2O3-10 vol% SiC sample. The improvement in the wear resistance was due to a decrease in the amount of surface pullout which was attributed to the presence of the biaxial residual compressive stress in the surface layer of the specimens.

Item Type: Article
Uncontrolled Keywords: Hot pressing; Spectroscopy; Wear resistance; Residual stress
Subjects: R Medicine > RK Dentistry
Divisions: Faculty of Dentistry
Depositing User: Mr Ahmad Azwan Azman
Date Deposited: 20 Aug 2014 01:26
Last Modified: 06 Jan 2015 08:54
URI: http://eprints.um.edu.my/id/eprint/10632

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