%0 journal article
%@ 1359-6462
%A Nwakwuo, C.C., Pistidda, C., Dornheim, M., Hutchison, J.L., Sykes, J.M.

%D 2011
%J Scripta Materialia
%N 4
%P 351-354 
%R doi:10.1016/j.scriptamat.2010.10.034
%T Microstructural analysis of hydrogen absorption in 2NaH + MgB2
%U https://doi.org/10.1016/j.scriptamat.2010.10.034
4 
%X Transmission electron microscopy and in situ X-ray diffraction have been used to characterize the hydrogenation mechanism of ball-milled 2NaH + MgB2. Hydrogen absorption was performed under 50 bar hydrogen while heating from room temperature to 400 °C. A new and unknown hydride phase is observed at about 280 °C. This phase remains stable up to 320 °C and subsequently disappears, followed by the formation of perovskite-type NaMgH3 at about 330 °C. At 380 °C, crystals of NaBH4 appear and grow.