About: Hydrogen diffusion in hydrogenated Mg and Mg-Mg2Ni eutectic alloy     Goto   Sponge   NotDistinct   Permalink

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Description
  • V teplotním intervalu 552-723 K byla studována časová závislost celkového množství vodíku desorbovaného z hydrogenovaného Mg a eutektické slitiny Mg-Mg2Ni (23,5 hm.% Ni). Experimenty byly prováděny hluboko pod rovnovážným tlakem, kde jsou tyto hydridy - perspektivní jako pevná média pro uchovávání vodíku - nestabilní a desorpční proces je hlavně řízen difúzí vodíku v příslušném hydridu (MgH2 a/nebo Mg2NiH4). Difúzní koeficienty vodíku byly vyhodnoceny z desorpčních křivek a ddifúzní koeficient vodíku podél mezifázové hranice MgH2/Mg2NiH4 byl odhadnut z výsledků získaných na eutektické slitině. (cs)
  • Time dependence of total amount of hydrogen desorbed from hydrogen-charged Mg and eutectic Mg-Mg2Ni (23.5 wt.% Ni) alloy was measured at temperatures from interval 552–723 K. Experiments were carried out well below the equilibrium pressure, where these hydrides – perspective as solid hydrogen storage media – are unstable and the desorption process is controlled mainly by diffusion of hydrogen in respective hydride (MgH2 and/or Mg2NiH4). Hydrogen diffusion coefficients were evaluated from desorption curves and hydrogen diffusion coefficient along interphase boundary MgH2/Mg2NiH4 was estimated from results obtained with the eutectic alloy.
  • Time dependence of total amount of hydrogen desorbed from hydrogen-charged Mg and eutectic Mg-Mg2Ni (23.5 wt.% Ni) alloy was measured at temperatures from interval 552–723 K. Experiments were carried out well below the equilibrium pressure, where these hydrides – perspective as solid hydrogen storage media – are unstable and the desorption process is controlled mainly by diffusion of hydrogen in respective hydride (MgH2 and/or Mg2NiH4). Hydrogen diffusion coefficients were evaluated from desorption curves and hydrogen diffusion coefficient along interphase boundary MgH2/Mg2NiH4 was estimated from results obtained with the eutectic alloy. (en)
Title
  • Hydrogen diffusion in hydrogenated Mg and Mg-Mg2Ni eutectic alloy
  • Hydrogen diffusion in hydrogenated Mg and Mg-Mg2Ni eutectic alloy (en)
  • Difúze vodíku v hydrogenovaném Mg a v eutektické slitině Mg-Mg2Ni (cs)
skos:prefLabel
  • Hydrogen diffusion in hydrogenated Mg and Mg-Mg2Ni eutectic alloy
  • Hydrogen diffusion in hydrogenated Mg and Mg-Mg2Ni eutectic alloy (en)
  • Difúze vodíku v hydrogenovaném Mg a v eutektické slitině Mg-Mg2Ni (cs)
skos:notation
  • RIV/68081723:_____/07:00091255!RIV08-AV0-68081723
http://linked.open.../vavai/riv/strany
  • 305;312
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA106/07/0010), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika
  • 6
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 425092
http://linked.open...ai/riv/idVysledku
  • RIV/68081723:_____/07:00091255
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • magnesium intermetallic phases; hydrogen diffusion; hydrogen storage (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • SK - Slovenská republika
http://linked.open...ontrolniKodProRIV
  • [9204CE2BF7AE]
http://linked.open...i/riv/nazevZdroje
  • Kovové materiály
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
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http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 45
http://linked.open...iv/tvurceVysledku
  • Král, Lubomír
  • Čermák, Jiří
  • Stloukal, Ivo
http://linked.open...n/vavai/riv/zamer
issn
  • 0023-432X
number of pages
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