Stability of MgH2 Samples after Thermodesorption

Stepan Alexandrovich Lushnikov; Tatyana Victorovna Filippova

doi:10.4028/www.scientific.net/DDF.371.14

Paper Titles

Preface

Characterization and Study Hard Layer on Steels Grade Machinery
p.1

Effect of Hydrogen on the Mechanical Behavior on AISI 4140 with Borided Coatings
p.8

Stability of MgH₂ Samples after Thermodesorption
p.14

Analysis of Bone Plate with Different Material in Terms of Stress Distribution
p.18

Arc Fusion Welding of Mg-Al₂Ca-Added Al 5xxx Alloys
p.25

Drying of Castor Bean Fruits (Ricinus communis L., "BRS Energia" Variety): An Experimental Investigation
p.31

Estimating and Extracting of the Surface Profile Waviness by Use of the Spatial Notch Filters in the Roughness Profile Analysis
p.37

Microstructure Analysis of the Weld Metal of Ni-Based Superalloys
p.44

HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 371Stability of MgH2 Samples after Thermodesorption

Stability of MgH₂ Samples after Thermodesorption

Abstract:

Samples of partly desorbed MgH₂ have been studied by the X-ray diffraction method. All samples contained two phases (Mg and MgH₂) and were stable at ambient condition for several months. After fast quenching in liquid nitrogen the samples became unstable and transformed after several days into Mg. The rate of decomposition depends on the amount ratio of Mg and MgH₂ phases in the sample. Destabilization of the hydride phase observed in quenched samples can be explained on the basis of different diffusion of disordered and ordered hydrogen atoms.

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Periodical:

Defect and Diffusion Forum (Volume 371)

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14-17

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.371.14

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Online since:

February 2017

Authors:

Stepan Alexandrovich Lushnikov*, Tatyana Victorovna Filippova

Keywords:

Hydrogen Diffusion, Magnesium Hydride, Phase Transition, X-Ray Diffraction

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