16 KB241 KB13 KB200020242007Kocjan, AndražMcGuiness, Paul J.Škulj, IrenaŠuštaršič, Borivojletnik:41številka:6str. 279-282ISSN:1580-2949COBISSID:638890URN:URN:NBN:SI:doc-CHO6XR8FenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijecirkonijhidrogeniranjekatalizatorjikvazikristalinikeljtitanzirconiumzlitineHydrogen absorption by Ti-Zr-Ni-based alloys| Absorpcija vodika v zlitinah Ti-Zr-Ni|Some transition metals and their alloys have the ability to reversibly absorb considerable amounts of hydrogen. The amount of absorbed hydrogen and the absorption kinetics depend on interactions between the hydrogen atoms and the alloy. Titanium and zirconium show a high affinity for hydrogen, and Ti-Zr-Ni alloys with either amorphous or quasicrystalline structures have proved to be excellent absorbers of hydrogen. In this study we have focused on processing Ti-Zr-Ni ribbons with four different compositions and investigating their hydrogenation behaviour. A melt-spinning process was used as the alloy-preparation technique, and samples from each composition were examined before and after the hydrogenation process. The ribbons were analysed by X-raydiffraction (XRD) and examined with a scanning electron microscope (SEM) equipped with an energy-dispersive X-ray spectrometer (EDS). Only the sample with the lowest nickel concentration was found to absorb any significant quantity of hydrogen under the applied experimental conditionsNekatere kovine prehoda in njihove zlitine imajo sposobnost reverzibilne absorpcije vodika. Količina absorbiranega vodika in kinetika absorpcije sta odvisni od interakcij med atomi vodika in atomi zlitine. Titan in cirkonij imata visoko afiniteto do vodika in zato zlitina Ti-Zr-Ni z amorfno ali kvazikristalno strukturo odlično absorbira vodik. V tem delu smo se osredinili na postopek izdelave trakov Ti-Zr-Ni s stirimi različnimi sestavami in preučili postopek hidrogenacije. Kot postopek izdelave trakov smo uporabili litje taline na vrteči se valj. Hitro strjene trakove različnih sestav smo preučili pred hidrogenacijo in po njej. Trakove smo analizirali z rentgensko spektroskopijo (XRD) in vrstičnim elektronskim mikroskopom (SEM) z energijsko disperzijo rentgenskih žarkov (EDS). Le vzorec z najnižjo vsebnostjo niklja je pri danih pogojih absorbiral znatnejše količine vodikaTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije