[Kovove materialy - Metallic materials]
    Mon - January 25, 2021 - 13:54 No. of hits : 1227817 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 58 (2020), Issue 3

Significant decrease of hydride decomposition enthalpy in ordered Mg-In alloys induced by growing hydrogen concentration
vol. 58 (2020), no. 3, pp. 161 - 167

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.

Key words
hydrogen storage, Mg alloys, ordering, hydrides, ball milling

[open article.pdf] Full text (253 KB)

[IMMS SAS]      UMMS SAV - Bratislava (SK) Personal data Protection   ver. 1.7.2      [go to HOME PAGE]
Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.

Article abstracts updated: 2021-01-15 08:18      
Articles in press revised: 2020-10-30 12:09     
Full text pdf uploaded: 2020-11-09 13:07    
Information updated: 2020-06-29 17:09   
Code last revised: 2020-06-29 16:48  

© OldSoft, 2004, …, 2021