Transition from interfacial to diffusional growth during hydrogenation of Mg

Transition from interfacial to diffusional growth during hydrogenation of Mg

The transition from interfacial to diffusional growth during hydrogenation of Mg arrow right MgH2 (hydride) at 210 degree C for 300min is studied using Johnson-Mehl-Avrami-Kolmogorov equation The growth dimensionality (n) decreases from 0.73 to 0.23. 1D (hydride/metal) interfacial growth occurs when...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Materials letters 2015-12, Vol.161, p.271-274
Hauptverfasser: Shriniwasan, Sweta, Tien, Hung-Yu, Tanniru, Mahesh, Ebrahimi, Fereshteh, Tatiparti, Sankara Sarma V.
Format: Artikel
Sprache:eng
Schlagworte:
Constants
Diffusion
Diffusion coefficient
Hydrides
Hydrogenation
Magnesium
Mathematical analysis
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The transition from interfacial to diffusional growth during hydrogenation of Mg arrow right MgH2 (hydride) at 210 degree C for 300min is studied using Johnson-Mehl-Avrami-Kolmogorov equation The growth dimensionality (n) decreases from 0.73 to 0.23. 1D (hydride/metal) interfacial growth occurs when n>0.50, suggested by constant interface velocity (U). Diffusional growth at n
ISSN:0167-577X
DOI:10.1016/j.matlet.2015.08.116