ISIS Neutron and Muon Source Data Journal

Understanding the Two Step Decomposition of Milled Magnesium Hydride by Neutron Scattering; Part II: In-situ SANS

Abstract: When MgH2 is processed under relatively mild milling conditions it exhibits a two-step thermal decomposition process where loss of hydrogen is associated with each endothermic event. To date, no causal link between the two thermal events and the material has been established and no absolute description of the mechanism involved in the two hydrogen desorption steps has been determined. To unravel the decomposition mechanism of the milled hydride, we propose RT and in-situ small angle scattering measurements to decouple the effects of microstructure and phase behaviour in the dehydrogenation of MgH2; a complementary proposal covering neutron diffraction measurements has been submitted. Here we will determine the particle surface scattering properties of intermediate partially hydrogenated (MgH2-x) phases that evolve during the ¿low temperature¿ (LT) and ¿high temperature¿ (HT) endotherms.

Principal Investigator: Professor Duncan Gregory
Principal Investigator: Professor Duncan Gregory
Experimenter: Dr Hazel Reardon
Experimenter: Dr IWONA Malka
Experimenter: Miss Tina Yu-Ting Su
Experimenter: Mr Zhe Liu
Experimenter: Dr James Hanlon
Local Contact: Dr Tristan Youngs

DOI: 10.5286/ISIS.E.RB1410451

ISIS Experiment Number: RB1410451

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Duncan Gregory et al; (2015): Understanding the Two Step Decomposition of Milled Magnesium Hydride by Neutron Scattering; Part II: In-situ SANS , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1410451

Data is released under the CC-BY-4.0 license.