Title :
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
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 MgPd0.6. 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;
Conference_Titel :
Strategic Technology (IFOST), 2012 7th International Forum on
Conference_Location :
Tomsk
Print_ISBN :
978-1-4673-1772-6
DOI :
10.1109/IFOST.2012.6357525
