Název: HYDROGEN ABSORPTION IN A-Co30Fe55B15
Autoři: Čermák, Jiří ; Král, Lubomír ; Roupcová, Pavla
Typ dokumentu: Příspěvky z konference
Konference/Akce: METAL 2016 - Anniversary International Conference on Metallurgy and Materials /25./, Brno (CZ), 20160525
Rok: 2016
Jazyk: eng
Abstrakt: Hydrogen solved in amorphous alloys (AAs) influences their magnetic characteristics. AAs are also perspective\nas additives that can improve hydrogen storage kinetic in certain types of ball-milled hydrogen storage\nmaterials (HSMs). Therefore, knowledge of hydrogen solubility and hydrogen sorption kinetics in AAs are of a\ngreat importance for aimed design both AAs with optimal magnetic parameters and HSMs with desired sorption\ncharacteristics. In the present paper, amorphous alloy Co30Fe55B15 (an example of the type a-TM1xTM2y Bz ;\nTM - transition metal) was investigated. Hydrogen concentration c H was measured by Sieverts method in\ntemperature interval from T = 150 °C to T = 350 °C under hydrogen pressure p up to 6 MPa. It was found that\nc H was an increasing function of p and its maximum value was typically 0.5 wt.% H2 at 350 °C and 6 MPa.\nHowever, when the alloy was preliminary hydrogen charged (PHC), the pressure dependence of total c Htot in\nthe first absorption cycle(s) is non-monotonous in dependence on PHC conditions. For the sake of comparison,\nthe same absorption characteristics were measured also in Mg2Ni intermetallic that is a common constituent\nin Mg-based HSMs. Comparing Co30Fe55B15 and Mg2Ni, it was concluded that Co30Fe55B15 shows lower\nhydrogen solubility, but much better absorption kinetics.
Klíčová slova: absorption, Co 30 Fe 55 B 15; Co30Fe55B15; Hydrogen
Číslo projektu: LQ1601 (CEP)
Poskytovatel projektu: GA MŠk
Zdrojový dokument: METAL 2016: 25th International Conference on Metallurgy and Materials, ISBN 978-80-87294-67-3

Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0266066

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-261719


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fyziky materiálů
Konferenční materiály > Příspěvky z konference
 Záznam vytvořen dne 2017-01-04, naposledy upraven 2022-09-29.


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