Hydrogen uptake in Mg thin film alloys

Author

Munkhsaikhan, G. ; Sveinn, O. ; Sangaa, D. ; Munkhbaatar, P. ; Batdemberel, G.

Author_Institution

Sch. of Mater. Technol., Mongolian Univ. Sci. & Technol., Ulaanbaatar, Mongolia

fYear

2012

fDate

18-21 Sept. 2012

Firstpage

1

Lastpage

5

Abstract

The work is focused on the study of the possibility to reduce the binding energy of hydride formation by alloying metal magnesium with palladium and chromium. Hydrogen uptake in Mg-Pd and Mg-Cr films was investigated by in-situ resistance measurements. Experimental data were used to calculate the dependence of the p-ΔR-T and isotherms showing the enthalpy and entropy change were drawn. The data were then compared with bulk values for MgH₂ and MgPd_0.6. As a result, the conclusion is made that the enthalpy change or binding energy was reduced from -0.77 eV/H₂ down to -0.65 ÷-0.5 eV/H₂.

Keywords

binding energy; chemical engineering; chromium alloys; electric resistance measurement; enthalpy; entropy; magnesium alloys; metallic thin films; palladium alloys; MgCr; MgPd; binding energy reduction; enthalpy change; entropy change; hydride formation; hydrogen uptake; in-situ resistance measurements; isotherms; magnesium-chromium thin-film alloys; magnesium-palladium thin-film alloys; p-ΔR-T; Electrical resistance measurement; Films; Hydrogen; Magnesium; Resistance; Temperature measurement; binding energy; enthalpy change; entropy change; hydrogen uptake;

fLanguage

English

Publisher

ieee

Conference_Titel

Strategic Technology (IFOST), 2012 7th International Forum on

Conference_Location

Tomsk

Print_ISBN

978-1-4673-1772-6

Type

conf

DOI

10.1109/IFOST.2012.6357525

Filename

6357525