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Grigorova, Eli; Spassova, Maya; Spassov, Tony; Khristov, Mitko
Journal of materials science, 03/2014, Letnik: 49, Številka: 6Journal Article
The hydriding/dehydriding characteristics of 90 wt% MgH2a10 wt% MeSi2 (Me = Ti, Cr) composites, synthesized by ball milling under argon, were studied by Sievertas type apparatus and by high-pressure differential scanning calorimetry (HPDSC). The composites have demonstrated similar absorption kinetics and capacity at temperature of 300 degree C and a pressure of 1 MPa. They showed fast kinetics and achieved absorption capacity higher than 6 wt%. Slightly higher values for the enthalpy of hydriding and dehydriding were obtained at scanning conditions in the HPDSC for the composite 90 wt% MgH2a10 wt% CrSi2 compared to those for the composite with addition of TiSi2.
