Powder metallurgy has been used to prepare FeAl powders with in situ created oxidation products. The aim of this study was to analyse the types of oxide formed as a function of sintering conditions. Highly oxidised powders have been used to give evidence of these transformations by X-ray diffraction. It has been shown that low temperature sintering (T < 1200°C) results in the formation of FeAl2O4spinel, while higher sintering temperatures lead to its transformation into α-Al2O3and coarsening. An attempt, based on thermodynamic calculations, has been made to explain the formation of FeAl2O4spinel.
Wolski, K., Thévenot, F., & Le Coze, J. (1996). Oxide transformations during sintering of in situ oxidised FeAl powders. Materials Science and Engineering A, 207(1), 105–114. https://doi.org/10.1016/0921-5093(96)80007-4