About: Hydrogen diffusion in Mg–H and Mg–Ni

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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 of twinned low-temperature phase LT2. It was found that the LT2 slows down the hydrogen desorption rate considerably. 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 of twinned low-temperature phase LT2. It was found that the LT2 slows down the hydrogen desorption rate considerably. (en) 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. (cs)
Title	Hydrogen diffusion in Mg–H and Mg–Ni–H alloys Hydrogen diffusion in Mg–H and Mg–Ni–H alloys (en) Difúze vodíku ve slitinách Mg-H a Mg-Ni-H (cs)
skos:prefLabel	Hydrogen diffusion in Mg–H and Mg–Ni–H alloys Hydrogen diffusion in Mg–H and Mg–Ni–H alloys (en) Difúze vodíku ve slitinách Mg-H a Mg-Ni-H (cs)
skos:notation	RIV/68081723:_____/08:00308977!RIV09-AV0-68081723
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA106/07/0010), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika	12
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Čermák, Jiří Král, Lubomír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky materiálů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	371017
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/08:00308977
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	intermetallic compounds; magnesium alloys; hydrogen-storage materials (en)
http://linked.open.../riv/klicoveSlovo	intermetallic compounds magnesium alloys hydrogen-storage materials
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[3B05926828CB]
http://linked.open...i/riv/nazevZdroje	Acta Materialia
http://linked.open...in/vavai/riv/obor	BJ
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Diffusion of hydrogen in alloys Mg-Ni modified by chosen elements that suppress the stability of hydrides
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	56
http://linked.open...iv/tvurceVysledku	Král, Lubomír Čermák, Jiří
http://linked.open...ain/vavai/riv/wos	000257600900001
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing
issn	1359-6454
number of pages	10 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Hydrogen diffusion in Mg–H and Mg–Ni–H alloys Hydrogen diffusion in Mg–H and Mg–Ni–H alloys

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