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Hydrogen diffusion in Mg?H and Mg?Ni?H alloys

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F08%3A00308977" target="_blank" >RIV/68081723:_____/08:00308977 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Hydrogen diffusion in Mg?H and Mg?Ni?H alloys

  • Original language description

    Coefficients of hydrogen diffusion in Mg2NiH4 (DI), MgH2 (DM), and in (Mg + Mg2Ni)-H eutectic (DE) were measured in the temperature interval 449?723 K. Experimental material was prepared by two techniques: by melting and casting and by ball-milling and compacting into pellets. Hydrogen charging was carried out from the hydrogen gas phase at high temperature and pressure. The Mg2NiH4 pellets were prepared in different regimes resulting either in a structure with a high fraction or with a low fraction oftwinned low-temperature phase LT2. It was found that the LT2 slows down the hydrogen desorption rate considerably.

  • Czech name

    Difúze vodíku ve slitinách Mg-H a Mg-Ni-H

  • Czech description

    Koeficienty difúze vodíku v Mg2NiH4 (DI), Mg2H (DM) and v eutektitu (Mg+Mg2Ni)-H (DE) byly měřeny v teplotním intervalu 449-723 K. Experimentální materiál byl připraven dvěma metodami: tavením a odlitím a kulovým mletím a kompaktováním do tablet. Nabíjení vodíkem probíhalo z plynné fáze při vysoké teplotě a tlaku. Tablety Mg2NiH4 byly pžipraveny v různých regime, což vedlo buď velkému nebo malému podílu frakce dvojčaté nízkoteplotní fáze LT2. Bylo zjištěno, že LT2 významně snižuje desorpci vodíku.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BJ - Thermodynamics

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA106%2F07%2F0010" target="_blank" >GA106/07/0010: Diffusion of hydrogen in alloys Mg-Ni modified by chosen elements that suppress the stability of hydrides</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Acta Materialia

  • ISSN

    1359-6454

  • e-ISSN

  • Volume of the periodical

    56

  • Issue of the periodical within the volume

    12

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    10

  • Pages from-to

  • UT code for WoS article

    000257600900001

  • EID of the result in the Scopus database