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Microstructural modification upon hydrogen cycling of MgH 2 nanocomposites

TitoloMicrostructural modification upon hydrogen cycling of MgH 2 nanocomposites
Tipo di pubblicazionePresentazione a Congresso
Anno di Pubblicazione2011
AutoriMontone, Amelia, Aurora A., Mirabile Gattia Daniele, and M. Antisari Vittori
Conference NameMaterials Research Society Symposium Proceedings
Conference LocationSan Francisco, CA
ISBN Number9781618395306
Parole chiaveAbsorption-desorption, Base material, Carbon capture, Catalysis, Hydrogen, Hydrogen cycling, Hydrogen storage, In-situ, Innovative method, Materials, MgO, Microstructural modification, Morphological evolution, Oxide shell, Powder particles, Scanning electron microscopy, Surface protrusion, Tank material
Abstract

The morphological evolution of Mg based powders during repeated absorption-desorption reactions with hydrogen has been studied by Scanning Electron Microscopy. The main feature observed is the presence, after several cycles, of surface protrusions probably constituted by the base Mg material without the presence of a catalyst. The effect is present both in catalyzed and non-catalyzed materials and it is considered an indication of the tendency of the base material to exit from the oxide shell surrounding the Mg powder particles. This tendency is confirmed by the observation of empty MgO boxes indicating that the effect can push until a complete expulsion of the base material. This effect can represent the base for an innovative method for cleaning the surface of a tank material by an "in situ" procedure. © 2011 Materials Research Society.

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84860581414&doi=10.1557%2fopl.2011.1499&partnerID=40&md5=24de108f86a2586467a4033884c3213c
DOI10.1557/opl.2011.1499
Citation KeyMontone201124