Deformation behaviour of iron-doped alumina

Autor:	Ahmed Addad, R. Duclos, A. Bataille, J. Crampon
Rok vydání:	2005
Předmět:	education.field_of_study Materials science Metallurgy Population Spinel Analytical chemistry FEAL engineering.material Grain size Grain growth Creep Materials Chemistry Ceramics and Composites engineering Grain boundary Deformation (engineering) education
Zdroj:	Journal of the European Ceramic Society. 25:857-862
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2004.01.006
Popis:	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 Fe 2+ cations population. Fe 2+ cations sped up the deformation rates. FeAl 2 O 4 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 Fe 2+ 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::91112c2bb64a8f7cdb5b0c381a71e16b https://doi.org/10.1016/j.jeurceramsoc.2004.01.006 Zobrazit plný text záznamu Full Text from ScienceDirect