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

0524960 - ÚFM 2021 RIV SK eng J - Článek v odborném periodiku
Čermák, Jiří - Král, Lubomír - Roupcová, Pavla
Significant decrease of hydride decomposition enthalpy in ordered Mg-In alloys induced by growing hydrogen concentration.
Kovové materiály. Roč. 58, č. 3 (2020), s. 161-167. ISSN 0023-432X. E-ISSN 1338-4252
Grant CEP: GA ČR(CZ) GA17-21683S
Institucionální podpora: RVO:68081723
Klíčová slova: hydrogen storage * Mg alloys * ordering * hydrides * ball milling
Obor OECD: Materials engineering
Impakt faktor: 1.068, rok: 2020
Způsob publikování: Open access
http://www.elis.sk/download_file.php?product_id=6738&session_id=6cmlvh3cjrsplgk0gff3f25187

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 ΔH 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 ΔH in ordered alloys were lower and decreased
with increasing x and hydrogen concentration. Results were explained by size effect.
Trvalý link: http://hdl.handle.net/11104/0310352