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Crystallization Kinetics Of Fe80-yVyB12Si8 Amorphous Ribbons

Published online by Cambridge University Press:  15 February 2011

P. Altúzar ,
C V́zquez ,
L. BañOS  and
R. Valenzuela
P. Altúzar
Affiliation:
Institute for Materials Research, National University of Mexico, Ap. Postal 70–360, Mexico D.F., 04510, Mexico.
C V́zquez
Affiliation:
Institute for Materials Research, National University of Mexico, Ap. Postal 70–360, Mexico D.F., 04510, Mexico.
L. BañOS
Affiliation:
Institute for Materials Research, National University of Mexico, Ap. Postal 70–360, Mexico D.F., 04510, Mexico.
R. Valenzuela
Affiliation:
Institute for Materials Research, National University of Mexico, Ap. Postal 70–360, Mexico D.F., 04510, Mexico.
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Abstract

The effects of vanadium in the crystallization kinetics amorphous ribbons Fe80-yVyB12Si8 (0.5 < y < 15) has been investigated by Differential Scanning Calorimetry, by using the Avrami, Kolmogorov-Johnson-Mehl-Avrami, and Calka and Radlinski equations. The addition of vanadium to Fe-B-Si alloys leads to an enhancement of stability against crystallization, as shown by an increase in the effective activation energy for crystallization (Eeff = 3.6eV) and an increase in the temperature for the first crystallization peak, as a function of vanadium content (from 780 to 855K). Results also show that the crystallization Mechanism, nucleation rate and dimensionality of growth are constant throughout the crystallization process in the composition range investigated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 321: Symposium E – Crystallization and Related Phenomena in Amorphous Materials—Ceramics, Metals, Polymers, and Semiconductors , 1993 , 325
Copyright
Copyright © Materials Research Society 1994

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