Hydrogen storage of melt-spun amorphous Mg65Ni20Cu5Y10 alloy deformed by high-pressure torsion

Autor(en)

A Revesz, A. Kis-Tóth, Lajos K. Varga, Erhard Schafler, Imre Bakonyi, Tony Spassov

Abstrakt

Rapidly quenched amorphous Mg65Ni20Cu5Y10 metallic glass compacts were subjected to heavy shear deformation by high-pressure torsion until different amounts of ultimate strain. High-resolution X-ray diffraction analysis and scanning electron microscopy revealed that high-pressure torsion resulted in a deformation dependent microstructure. High-pressure calorimetry measurements revealed that hydrogen uptake in the fully amorphous alloy occurs at a significantly lower temperature compared to the fully crystallized state, while the amount of absorbed hydrogen increased considerably after heavy shear deformation due to the formation of Mg2Ni crystals.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Eötvös Loránd University Budapest, Magyar Tudományos Akadémia, Sofia University "St. Kliment Ohridski"

Journal

International Journal of Hydrogen Energy

Band

37

Seiten

5769-5776

Anzahl der Seiten

8

ISSN

0360-3199

DOI

https://doi.org/10.1016/j.ijhydene.2011.12.160

Publikationsdatum

2012

Peer-reviewed

Ja

ÖFOS 2012

210006 Nanotechnologie, 103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/a68c1ae6-ac33-4cec-b5e1-36cdbc2f3ea4