HYDROGEN SORPTION IN ORDERED Mg-In ALLOYS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F19%3A00511641" target="_blank" >RIV/68081723:_____/19:00511641 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26620/19:PU140060

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

HYDROGEN SORPTION IN ORDERED Mg-In ALLOYS

Popis výsledku v původním jazyce

Hydrogen storage (HS) performance of three Mg- x In- y CB alloys (CB - amorphous carbon, x = 55, 64, 73 y =n10 wt%) was studied. Indium concentration covered an area of ordered β structures. Alloys were prepared bynball-milling in hydrogen atmosphere. Kinetic curves and PCT isotherms were measured in the temperatureninterval from 200 °C to 325 °C. X-ray diffraction spectroscopy (XRD) was used for structure investigation. Alloynwith x = 73 wt% In ( β ’’ structure) showed reversible amorphization during temperature cycling between aboutn100 °C and 350 °C. Hydrogen sorption experiments were done by the Sieverts method under the hydrogenngas pressure ranging from 0.1 MPa to 2.5 MPa. It was found that hydrogen sorption capacity varied betweenn0.47 and 1.1 wt% H 2 . Hydride formation enthalpy ∆H calculated from desorption PCT experiments wasnsignificantly lower than ∆H , known for pure Mg. This invoked an idea that atomic order of Mg-based HSnmaterials might decrease the high thermodynamic stability of hydride phase.

Název v anglickém jazyce

HYDROGEN SORPTION IN ORDERED Mg-In ALLOYS

Popis výsledku anglicky

Hydrogen storage (HS) performance of three Mg- x In- y CB alloys (CB - amorphous carbon, x = 55, 64, 73 y =n10 wt%) was studied. Indium concentration covered an area of ordered β structures. Alloys were prepared bynball-milling in hydrogen atmosphere. Kinetic curves and PCT isotherms were measured in the temperatureninterval from 200 °C to 325 °C. X-ray diffraction spectroscopy (XRD) was used for structure investigation. Alloynwith x = 73 wt% In ( β ’’ structure) showed reversible amorphization during temperature cycling between aboutn100 °C and 350 °C. Hydrogen sorption experiments were done by the Sieverts method under the hydrogenngas pressure ranging from 0.1 MPa to 2.5 MPa. It was found that hydrogen sorption capacity varied betweenn0.47 and 1.1 wt% H 2 . Hydride formation enthalpy ∆H calculated from desorption PCT experiments wasnsignificantly lower than ∆H , known for pure Mg. This invoked an idea that atomic order of Mg-based HSnmaterials might decrease the high thermodynamic stability of hydride phase.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Metal 2019 - 28th International Conference on Metallurgy and Materials

ISBN

978-80-87294-92-5

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

1422-1427

Název nakladatele

TANGER Ltd., Ostrava

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

22. 5. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000539487400233