OXIDE TRANSFORMATIONS DURING SINTERING OF IN-SITU OXIDIZED FEAL POWDERS

Authors
WOLSKI K THEVENOT F LECOZE J
Citation
K. Wolski et al., OXIDE TRANSFORMATIONS DURING SINTERING OF IN-SITU OXIDIZED FEAL POWDERS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 207(1), 1996, pp. 105-114
Citations number
19
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
207
Issue
1
Year of publication
1996
Pages
105 - 114
Database
ISI
SICI code
0921-5093(1996)207:1<105:OTDSOI>2.0.ZU;2-E
Abstract
Powder metallurgy has been used to prepare FeAI powders with in situ c reated oxidation products. The aim of this study was to analyse the ty pes of oxide formed as a function of sintering conditions. Highly oxid ised powders have been used to give evidence of these transformations by X-ray diffraction. It has been shown that low temperature sintering (T< 1200 degrees C) results in the formation of FeAl2O4 spinel, while higher sintering temperatures lead to its transformation into alpha-A l2O3 and coarsening. An attempt, based on thermodynamic calculations, has been made to explain the formation of FeAl2O4 spinel.