INVESTIGADORES
RODRIGUEZ TORRES Claudia Elena
artículos
Título:
Crystallization kinetics of B-rich Mischmetal-Fe-B nanocomposite ribbons
Autor/es:
F.D. SACCONE; CLAUDIA E. RODRÍGUEZ TORRES; G.A. PASQUEVICH; M. B. FERNÁNDEZ VAN RAAP; F.H. SÁNCHEZ
Revista:
PHYSICA B - CONDENSED MATTER
Referencias:
Año: 2004 vol. 354 p. 237 - 240
ISSN:
0921-4526
Resumen:
The crystallisation kinetics of MM2.5Fe79B18.5 (MM=Mischmetal), was followed by means of Mossabuer effect experiments at constant acceleration, Mossbauer thermal scan, thermomagnetic and calorimetric measurements.It was determined that the as-quenched ribbons are amorphous with a Tc of 668K and the crystallisation, at low heating rates, occurs in two steps: in the fi.rst step, it precipitates a dilute a-(Fe, RE) solid solution, while in the second Fe2B and more a-(Fe, RE) are crystallised from the remnant Fe-impoverished amorphous matrix.
