Röntzsch, L.L.RöntzschKalinichenka, S.S.KalinichenkaKieback, B.B.Kieback2022-03-112022-03-112010https://publica.fraunhofer.de/handle/publica/366874In this contribution, nanocrystalline magnesium-rich Mg-Ni-Y alloys were produced by melt-spinning and were studied in view of their crystal structure, crystallization behaviour and their cyclic hydrogenation/dehydrogenation properties that render them attractive materials for the reversible storage of hydrogen. The alloy composition was chosen for several reasons: From the literature it is known that the addition of Ni to Mg significantly improves the hydriding/dehydriding kinetics and decreases the working temperature compared to that of pure Mg. Further, Y is widely known as glass-forming element in Mg alloys. Moreover, ultrafine yttrium hydride particles improve the hydrogen sorption kinetics of Mg. Finally, ultra-fine crystal phases like yttrium hydrides might stabilize the nanostructure of the alloys by preventing further crystal coarsening during thermal processing.enDehydrierungHydrierenKristallstrukturMgNi-LegierungMikrogefügenanokristalline LegierungSchmelzspinnenWasserstoffspeicherlegierungYttriumhydridYttriumzusatz620conference paper