MgH2→ Mg phase transformation driven by a high-energy electron beam: Anin situtransmission electron microscopy study

Autor: I. P. Jones, Biswajit Paik, Allan Walton, I.R. Harris, Vicky Mann, David Book
Rok vydání: 2010
Předmět:
Zdroj: Philosophical Magazine Letters. 90:1-7
ISSN: 1362-3036
0950-0839
DOI: 10.1080/09500830903272892
Popis: The dynamics of a phase change have been studied using the electron beam in a transmission electron microscope to transform MgH2 into Mg. The study involved selected-area diffraction and electron-energy-loss spectroscopy (EELS). The orientation relation ( and ), obtained from the electron diffraction study, has been used to propose a model for the movements of magnesium atoms during the phase change. The in situ EELS results have been compared with the existing H-desorption model. The study aims to describe the sorption dynamics of hydrogen in MgH2, which is a base material for a number of promising hydrogen storage systems.
Databáze: OpenAIRE
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