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HYDROGEN SORPTION IN ORDERED Mg-In ALLOYS

  1. 1.
    SYSNO ASEP0511641
    Document TypeC - Proceedings Paper (int. conf.)
    R&D Document TypeConference Paper
    TitleHYDROGEN SORPTION IN ORDERED Mg-In ALLOYS
    Author(s) Čermák, Jiří (UFM-A) RID, ORCID
    Král, Lubomír (UFM-A) RID, ORCID
    Roupcová, Pavla (UFM-A) RID, ORCID
    Number of authors3
    Source TitleMetal 2019 - 28th International Conference on Metallurgy and Materials. - Ostrava : TANGER Ltd., Ostrava, 2019 - ISBN 978-80-87294-92-5
    Pagess. 1422-1427
    Number of pages6 s.
    Publication formMedium - C
    ActionMETAL 2019. International conference on metallurgy and materials /28./
    Event date22.05.2019 - 24.05.2019
    VEvent locationBrno
    CountryCZ - Czech Republic
    Event typeWRD
    Languageeng - English
    CountryCZ - Czech Republic
    KeywordsHydrogen storage ; Mg alloys ; hydride stability ; ordering
    Subject RIVJJ - Other Materials
    OECD categoryMaterials engineering
    R&D ProjectsLQ1601 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    GA17-21683S GA ČR - Czech Science Foundation (CSF)
    Institutional supportUFM-A - RVO:68081723
    UT WOS000539487400233
    EID SCOPUS85079428052
    AnnotationHydrogen storage (HS) performance of three Mg- x In- y CB alloys (CB - amorphous carbon, x = 55, 64, 73 y =
    10 wt%) was studied. Indium concentration covered an area of ordered β structures. Alloys were prepared by
    ball-milling in hydrogen atmosphere. Kinetic curves and PCT isotherms were measured in the temperature
    interval from 200 °C to 325 °C. X-ray diffraction spectroscopy (XRD) was used for structure investigation. Alloy
    with x = 73 wt% In ( β ’’ structure) showed reversible amorphization during temperature cycling between about
    100 °C and 350 °C. Hydrogen sorption experiments were done by the Sieverts method under the hydrogen
    gas pressure ranging from 0.1 MPa to 2.5 MPa. It was found that hydrogen sorption capacity varied between
    0.47 and 1.1 wt% H 2 . Hydride formation enthalpy ∆H calculated from desorption PCT experiments was
    significantly lower than ∆H , known for pure Mg. This invoked an idea that atomic order of Mg-based HS
    materials might decrease the high thermodynamic stability of hydride phase.
    WorkplaceInstitute of Physics of Materials
    ContactYvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
    Year of Publishing2021
Number of the records: 1  

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