| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1499718 | Scripta Materialia | 2011 | 4 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Christopher C. Nwakwuo, Claudio Pistidda, Martin Dornheim, John L. Hutchison, John M. Sykes,