EFFECT OF ALLOYING ELEMENTS IN MELT SPUN Mg-ALLOYS FOR HYDROGEN STORAGE

S. ROZENBERG; J. LANG; F. AUDEBERT; F. SAPORITI; P. BOTTA; M. STOICA; J. HUOTB; J. ECKERT

Cancun

Congreso; Nanomat 2015; 2015

Universidad Autonoma de Mexico

Mg has high technological interest due to its potential application for hydrogen storage. Mg has high hydrogen absorption capacity of ~7.6 wt% H, but in order to expand its application is still needed to decrease the absorption-desorption temperature and improve the kinetics reactions. Therefore, it is of interest to study the effect of alloying elements on the hydrogen absorption-desorption behavior. Samples have been produced by melt spinning technique in order to obtain a refined microstructure and a good surface/volume ratio. The effect of Cu and Si were Mg has high technological interest due to its potential application for hydrogen storage. Mg has high hydrogen absorption capacity of ~7.6 wt% H, but in order to expand its application is still needed to decrease the absorption-desorption temperature and improve the kinetics reactions. Therefore, it is of interest to study the effect of alloying elements on the hydrogen absorption-desorption behaviour. Samples have been produced by melt spinning technique in order to obtain a refined microstructure and a good surface/volume ratio. The effect of Cu and Si were studied in the Mg90Si10, Mg90Cu10, Mg65Cu35 (at%) alloys, and the effect of the rare earths (using MM: mischmetal) and Al were studied in the Mg65Cu25Al10, Mg65Cu25MM10 and Mg65Cu10Al15MM10 alloys. The samples morphology was observed by scanning electron microscopy and the microstructure were characterized by X-ray diffraction. The stability and the crystallization process in the Mg-Cu-MM based alloys were studied by differential scanning calorimetry (DSC). Hydrogen absorption-desorption cycles were performed at 350°C.