Mössbauer and XRD Studies on Composite Powder with Phases from Fe-Al System Obtained by Mechanically Activated SHS Mehtod
The systematic studies of non-stoichiometric phases from Fe-Al system obtained by selfpropagating high-temperature synthesis (SHS) were the aim of the present work. Investigations were performed using 57Fe transmission Mössbauer spectroscopy. The presence of nonsteichiomertic FeAl, FeAl2 and Fe2Al5 phases was found. It is can be concluded that the studied powder material is in non-equilibrium state. As the result of milling process the contents of FeAl phase increase whereas of FeAl2 and Fe2Al5 ones decrease. The determined crystal structure parameters and the hyperfine interaction parameters are presented and discussed.
Danuta Stróż & Małgorzata Karolus
J.E. Frąckowiak et al., "Mössbauer and XRD Studies on Composite Powder with Phases from Fe-Al System Obtained by Mechanically Activated SHS Mehtod", Solid State Phenomena, Vol. 130, pp. 185-188, 2007