Title :
Magnetic properties of mechanically alloyed Fe-Si
Author :
Martin, V.E. ; Garcia-Escorial, A. ; Martin, A. ; Carmona, F. ; Cebollada, F. ; Adeva, P. ; González, J.M.
Author_Institution :
CSIC, Madrid, Spain
fDate :
9/1/1990 12:00:00 AM
Abstract :
The formation of both an amorphous Fe-Si phase and a crystalline solid solution of Si in Fe was demonstrated through differential scanning calorimetry (DSC), X-ray diffraction and thermomagnetic measurements of ball-milled pure-element powders. X-ray results are inconclusive about the effective alloying of Fe and Si and about their amorphization, although they seem to be compatible with both facts. Partial amorphicity of as-prepared samples seems to be related to the irreversible exothermic peaks observed at 195°C on DSC thermograms. This is confirmed by comparing X-ray diffractograms of thermally treated samples with those of untreated material. Also, an anomaly in the thermomagnetic behavior which is not related to any transformation present in the equilibrium phase diagram was observed at 200°C
Keywords :
X-ray diffraction examination of materials; iron alloys; magnetic properties of amorphous substances; phase diagrams; silicon alloys; 195 degC; 200 degC; DSC thermograms; FeSi; X-ray diffraction; X-ray diffractograms; amorphization; amorphous Fe-Si phase; ball-milled pure-element powders; crystalline solid solution; differential scanning calorimetry; equilibrium phase diagram; irreversible exothermic peaks; magnetic properties; mechanically alloyed Fe-Si; thermally treated samples; thermomagnetic measurements; Alloying; Amorphous materials; Calorimetry; Crystallization; Iron; Magnetic properties; Phase measurement; Powders; Solids; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
