Evolution of magnesium during reactive milling under hydrogen atmosphere with crystallitic carbon as milling aid

• Published in: Journal of alloys and compounds Vol. 581; pp. 472 - 478
• Main Authors: Zhou, Shixue, Zhang, Qianqian, Ran, Weixian, Han, Zongying, Niu, Haili, Han, Shuna, Cui, Liqiang, Zhang, Tonghuan, Chen, Haipeng, Liu, Di
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 25.12.2013; Elsevier
• Subjects: Applied sciences; Atmospheres; Carbon; Chemical and electrochemical properties; Coal; Condensed matter: structure, mechanical and thermal properties; Crystal phase; Crystal structure; Energy; Energy. Thermal use of fuels; Equations of state, phase equilibria, and phase transitions; Exact sciences and technology; Heating; Hydrogen storage; Magnesium; Magnesium hydride; Materials and auxiliary equipments used in energy engineering; Metals. Metallurgy; Microstructure; Physics; Prisms; Reactive milling; Solubility, segregation, and mixing; phase separation; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Crystal phase; Magnesium hydride; Microstructure; Reactive milling; Particle size; Hydrogen storage; Solubility; Controlled atmospheres; Desorption; Carbon; Heat treatments; Carbonization; Hexagonal lattices; Orthorhombic lattices; Magnesium; Crystal morphology; Orthorhombic crystals; Dehydridation; Crystal structure

•Shape of β-MgH2 nanoparticles from milling of Mg with H2 is oblique hexagonal prism.•Size increase of Mg particles from MgH2 dehydriding can be restrained by carbon.•Endothermic peak of γ-MgH2 is 53°C lower than that of β-MgH2 from 10 to 20h milling.•Heat absorption of γ-MgH2 dehydriding is 18kJ/mo...