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Mg–Ti nanostructured samples with different Ti contents were prepared via compaction of nanoparticles grown by inert gas condensation with independent Mg and Ti vapour sources. The growth set-up offered the option to perform in situ hydrogen absorption before compaction. Structural and morphological characterisation was carried out by X-ray diffraction, energy dispersive spectroscopy and electron microscopy. The formation of an extended metastable solid solution of Ti in hcp Mg was detected up to 15 at% Ti in the as-grown nanoparticles, while after in situ hydrogen absorption, phase separation between MgH2 and TiH2 was observed. At a Ti content of 22 at%, a metastable Mg–Ti–H fcc phase was observed after in situ hydrogen absorption. The co-evaporation of Mg and Ti inhibited nanoparticle coalescence and crystallite growth in comparison with the evaporation of Mg only. In situ hydrogen absorption …
Royal Society of Chemistry
Publication date: 
1 Jan 2016

M Calizzi, F Venturi, M Ponthieu, F Cuevas, V Morandi, T Perkisas, S Bals, L Pasquini

Biblio References: 
Volume: 18 Issue: 1 Pages: 141-148
Physical Chemistry Chemical Physics