Publication detail

Significant decrease of hydride decomposition enthalpy in ordered Mg-In alloys induced by growing hydrogen concentration

ČERMÁK, J. KRÁL, L. ROUPCOVÁ, P.

Original Title

Significant decrease of hydride decomposition enthalpy in ordered Mg-In alloys induced by growing hydrogen concentration

Type

journal article in Web of Science

Language

English

Original Abstract

Hydrogen sorption in four ball-milled Mg-xIn alloys (with x = 9, 61, 69, and 81 wt.%) was studied. It was found that pressure-concentration isotherms (PCI curves) of hydrogen desorption from disordered alloy (9 wt.% In) showed "ordinary" appearance leading to a constant hydride decomposition enthalpy Delta H close to the value known for pure Mg; however, the plateaus of PCI's obtained for desorption from ordered alloys (x > 9 wt.% In) were significantly upward-curved. Observed values of Delta H in ordered alloys were lower and decreased with increasing x and hydrogen concentration. Results were explained by size effect.

Keywords

hydrogen storage; Mg alloys; ordering; hydrides; ball milling

Authors

ČERMÁK, J.; KRÁL, L.; ROUPCOVÁ, P.

Released

10. 6. 2020

Publisher

REDAKCIA KOVOVE MATERIALY

Location

BRATISLAVA 38

ISBN

1338-4252

Periodical

KOVOVE MATERIALY-METALLIC MATERIALS

Year of study

58

Number

3

State

Slovak Republic

Pages from

161

Pages to

167

Pages count

7

URL

http://www.elis.sk/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=6738&category_id=162&option=com_virtuemart&vmcchk=1&Itemid=1

BibTex

@article{BUT169145,
  author="Jiří {Čermák} and Lubomír {Král} and Pavla {Roupcová}",
  title="Significant decrease of hydride decomposition enthalpy in ordered Mg-In alloys induced by growing hydrogen concentration",
  journal="KOVOVE MATERIALY-METALLIC MATERIALS",
  year="2020",
  volume="58",
  number="3",
  pages="161--167",
  doi="10.4149/km\{_}2020\{_}3\{_}161",
  issn="1338-4252",
  url="http://www.elis.sk/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=6738&category_id=162&option=com_virtuemart&vmcchk=1&Itemid=1"
}