Loading...

Nanocrystallization kinetics and magnetic properties of the melt spun amorphous (Fe0.5Co0.5)77Si11B 9Cu0.6Nb2.4 alloy

Shivaee, H. A ; Sharif University of Technology

1379 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.tca.2013.10.022
  3. Abstract:
  4. Kinetics of crystallization in an amorphous (Fe0.5Co 0.5)77Si11B9Cu0.6Nb 2.4 (at.%) alloy was investigated using differential scanning calorimetry (DSC). Transformed fraction as a function of temperature was obtained by accurate DSC measurement and the experimental data analyzed with Vyazovkin model-free kinetic method. Reconstructed form of the experimental kinetics model, g(α), clearly showed the crystallization mechanism do not belongs to a single model but almost follows the Avrami-Erofe'ev. Magnetic coercivity and hysteresis loss values of the annealed samples at 823 K were 7.5 A m-1 and 1.2 J m-3, compared to 17.1 A m-1 and 37.1 J m-3 for as spun samples. Magnetic measurements show the annealing reduces both coercivity and hysteresis loss at all frequencies
  5. Keywords:
  6. Cobalt-Finemet alloys ; Nano-crystallization ; Crystallization mechanisms ; Experimental kinetics ; Hysteresis loss value ; Isoconversional kinetics ; Kinetics of crystallization ; Magnetic coercivities ; Alloys ; Amorphous silicon ; Cerium alloys ; Coercive force ; Differential scanning calorimetry ; Hysteresis ; Niobium ; Silicon ; Kinetics
  7. Source: Thermochimica Acta ; Vol. 575, issue , 2014 , p. 64-69
  8. URL: http://www.linknovate.com/search/?q=nanocrystallization