INVESTIGADORES
SANCHEZ Francisco Homero
artículos
Título:
Crystallisation kinetics of B-rich mischmetal?Fe?B nanocomposite ribbons
Autor/es:
F.D. SACCONEA,, C.E. RODRı´GUEZ TORRES, G.PASQUEVICH, M.FERNANDEZ VAN RAAP, F.H. SANCHEZ
Revista:
PHYSICA B - CONDENSED MATTER
Editorial:
Elsevier
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, Mo¨ ssbauer 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 first 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.
