INVESTIGADORES
VISINTIN Arnaldo
congresos y reuniones científicas
Título:
Effect of additional catalytic phases imposed by sintering on the hydrogen absorption behavior of AB2 type ZR based alloys
Autor/es:
A. VISINTIN; H.A. PERETTI; F. RUIZ; H.L. CORSO; A.C. AYESTARÁN; W.E. TRIACA
Lugar:
La Serena, Chile
Reunión:
Congreso; CONAMET/SAM 2004; 2004
Institución organizadora:
CONAMET/SAM 2004
Resumen:
The electrochemical hydrogen absorption of electrodes containing a Laves phase AB2 type alloy is studied in alkaline media by monitoring their activation and discharge capacity along chargedischarge cycling. The considered alloy is Zr0.9Ti0.1(Ni0.5Mn0.25Cr0.20V0.05)2. It is tested in both as melted and annealed conditions, in order to investigate the catalytic effect of small amounts of microsegregated secondary phases of the Zr-Ni system. Since these catalytic phases are only present in the as melted alloys, tests are also carried out using a composite material elaborated with powders of the annealed alloy with the addition of 18 wt.% of the suspected catalytic phases melted separately. The hydrogen absorption-desorption behavior for the different cases is discussed and correlated with the metallurgical characterization of the materials and with previous results.
