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Evaluation of polishing damage in alumina

Pape, I. and Lawrence, C. W. and Warren, P. D. and Roberts, S. G. and Briggs, G. Andrew D. and Kolosov, Oleg and Hey, A. W. and Paines, C. F. and Tanner, B. K. (2000) Evaluation of polishing damage in alumina. Philosophical magazine a-Physics of condensed matter structure defects and mechanical properties, 80 (8). pp. 1913-1934. ISSN 0141-8610

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Abstract

Grazing incidence X-ray scattering and line focus acoustic microscopy have been applied to the study of grinding, lapping and polishing processes on alumina. Changes as a function of polishing time ill the near-surface density, measured from the critical angle for total external reflection of X-rays, were related to changes in the beating area and surface morphology. No relation was found between the micrometre-scale roughness measured by a stylus instrument and the integrated diffuse scatter, the latter being related to the nanometre-scale roughness on the top of the polished mesas remaining after grain pull-out during the grinding and lapping process. The surface acoustic wave velocity was also found to vary with polishing time. These changes cannot be ascribed to changes in roughness and are believed to measure changes in the residual crack density.

Item Type: Article
Journal or Publication Title: Philosophical magazine a-Physics of condensed matter structure defects and mechanical properties
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 57444
Deposited By: ep_importer_pure
Deposited On: 09 Oct 2012 13:11
Refereed?: Yes
Published?: Published
Last Modified: 10 Apr 2014 00:01
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57444

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