Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10629825 | Journal of the European Ceramic Society | 2005 | 6 Pages |
Abstract
Compressive creep tests in air were carried out on 1 cat.% Fe-doped alumina at a temperature T=1400 °C. Iron doping affected the plastic deformation by different ways in relation with Fe2+ cations population. Fe2+ cations sped up the deformation rates. FeAl2O4 spinel precipitates were identified and they were found (i) to interact with alumina grain boundaries (ii) to limit the grain growth within a range of strain. The Fe2+ cations underwent oxidation and this resulted in the dissolution of the some precipitates and in the decrease of deformation rates. It was suggested that deformation sped up this evolution through mass transport and that time was not a dominating parameter.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
A. Bataille, A. Addad, J. Crampon, R. Duclos,