IFLP 13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Complex Mg-based hydrides obtained by mechanosynthesis: Characterization and formation kinetics.
Autor/es:
BAUM, LORENA; MEYER, MARCOS; MENDOZA ZÉLIS, LUIS
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
Science Direct
Referencias:
Año: 2008 vol. 33 p. 3442 - 3446
ISSN:
0360-3199
Resumen:
ABSTRACT Ternary Mg2THy, as well as quaternary Mg2T0.5T0.5Hy, Mg-based hydrides with T,T = Fe,Co,Ni were synthetized by reactive mechanical alloying in hydrogen atmosphere at 0.3 MPa. The reaction progress was followed from the H2 absorption during milling until a steady state was reached, and different kinetic behaviours were found in each case. These regimes could be related to the presence or absence of hydrogen-free Mg2T intermetallic precursors in the respective phase diagrams. The steady state samples were characterized by X ray Diffraction and Differential Scanning Calorimetry, and those systems including Fe were studied, in addition, with Mössbauer Spectroscopy.
