Influence of the hydrogen content on hydrogen diffusion in the Zr69.5Cu12Ni11Al7.5 metallic glass

Autor:	L. Jastrow, D. Zander, M. Bobnar, Tomaž Apih, Janez Dolinšek, Uwe Köster
Rok vydání:	2005
Předmět:	Arrhenius equation Self-diffusion Amorphous metal Hydrogen Chemistry Diffusion Analytical chemistry chemistry.chemical_element General Chemistry Activation energy Superconducting magnet Condensed Matter Physics symbols.namesake Nuclear magnetic resonance Solid hydrogen Materials Chemistry symbols
Zdroj:	Solid State Communications. 134:337-341
ISSN:	0038-1098
DOI:	10.1016/j.ssc.2005.01.042
Popis:	We present a study of the temperature- and concentration-dependent hydrogen self-diffusion constant D in a Zr69.5Cu12Ni11Al7.5 metallic glass using the technique of nuclear magnetic resonance diffusion in a static fringe field of a superconducting magnet. In the investigated temperature interval between room temperature and 420 K, D is in the range 10−8–10−9 cm2/s and obeys Arrhenius form, D = D 0 exp ( − E a / k B T ) , indicating classical over-barrier-hopping hydrogen diffusion with an activation energy Ea. The concentration dependence of Ea and D was studied for the hydrogen-to-metal ratio H/M between 0 and 1.9. At low hydrogen content, H/M
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c7fadfa770e4c7a382ac89efacca73b2 https://doi.org/10.1016/j.ssc.2005.01.042 Zobrazit plný text záznamu Full Text from ScienceDirect