Authors: A González L Escoda J J Suñol G Shao B Arcondo P Bruna
Publish Date: 2010/01/01
Volume: 45, Issue: 2, Pages: 557-561
Abstract
Three nanocrystalline alloys Fe75−xCoxNi70Zr3015B10 x = 0 10 and 20 were synthesized from elemental powders in a planetary highenergy ball mill Their microstructure magnetic properties and thermal stability were characterized by Xray diffraction transmission Mössbauer spectroscopy transmission electron microscopy scanning electron microscopy induction coupled plasma vibrating sample magnetometry and differential scanning calorimetry After 80 h of milling the nanocrystallites size of alloys is in the range 6–10 ± 1 nm The lattice parameter decreases when increasing decreasing milling time Fe content Furthermore the thermal stability of the nanocrystalline phase increases when increasing Co concentration The activation energy of the main crystallization process between 275 ± 8 and 311 ± 10 kJ mol−1 is associated with grain growth Slight contamination from milling tools and milling atmosphere was detected Minor differences were detected after Mössbauer analysis
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