Mg films with mixed Fe and Zr metallic additives were prepared by rf magnetron sputtering keeping the total metal content constant, about , and changing the [Fe]/[Zr] ratio. Isothermal hydrogen desorption curves showed that the kinetics depends on [Fe]/[Zr] ratio and is fastest when the [Fe]/[Zr] ratio is . X-ray diffraction analysis revealed formation of Fe nanoclusters and Mg grain refinement. The improvement of the hydrogen desorption kinetics can be explained by the presence of atomically dispersed Zr and Fe nanoclusters acting as nucleation centers, as well as Mg grain refinement.
REFERENCES
1.
R.
Gonzalez
, Y.
Chen
, and K. L.
Tsang
, Phys. Rev. B
26
, 4637
(1982
).2.
G.
Friedlmeier
and M.
Groll
, J. Alloys Compd.
253–254
, 550
(1997
).3.
F. C.
Gennari
, F. J.
Castro
, and G.
Urretavizcaya
, J. Alloys Compd.
321
, 46
(2001
).4.
F.
von Zeppelin
, H.
Reule
, and M.
Hirscher
, J. Alloys Compd.
330
, 723
(2002
).5.
N.
Hanada
, T.
Ichikawa
, S. -I.
Orimo
, and H.
Fujii
, J. Alloys Compd.
366
, 269
(2004
).6.
G.
Liang
, J.
Huot
, S.
Boily
, A.
Van Neste
, and R.
Schulz
, J. Alloys Compd.
292
, 247
(1999
).7.
C. X.
Shang
, M.
Bououdina
, Y.
Song
, and Z. X.
Guo
, Int. J. Hydrogen Energy
29
, 73
(2004
).8.
H.
Reule
, M.
Hirscher
, A.
Weißhardt
, and H.
Kronmüller
, J. Alloys Compd.
305
, 246
(2000
).9.
O. G.
Ershova
, V. D.
Dobrovolsky
, Yu. M.
Solonin
, O. Yu.
Khyzhun
, and A. Yu.
Koval
, J. Alloys Compd.
464
, 212
(2008
).10.
G.
Liang
, J.
Huot
, S.
Boily
, A.
Van Neste
, R.
Schulz
, J. Alloys Compd.
292
, 247
(1999
).11.
B.
Sakintuna
, F.
Lamari-Darkrim
, and M.
Hirscher
, Int. J. Hydrogen Energy
32
, 1121
(2007
).12.
D. W.
Zhou
, S. L.
Li
, R. A.
Varin
, P.
Peng
, J. S.
Liu
, and F.
Yang
, Mater. Sci. Eng., A
427
, 306
(2006
).13.
M.
Tsuda
, W. A.
Diño
, H.
Kasai
, H.
Nakanishi
, and H.
Aikawa
, Thin Solid Films
509
, 157
(2006
).14.
N.
Bazzanella
, R.
Checchetto
, and A.
Miotello
, Appl. Phys. Lett.
85
, 5212
(2004
).15.
R.
Checchetto
, N.
Bazzanella
, A.
Miotello
, C.
Maurizio
, F.
D`Acapito
, P.
Mengucci
, G.
Barucca
, and G.
Majni
, Appl. Phys. Lett.
87
, 061904
(2005
).16.
N.
Bazzanella
, R.
Checchetto
, A.
Miotello
, C.
Sada
, P.
Mazzoldi
, and P.
Mengucci
, Appl. Phys. Lett.
89
, 014101
(2006
).17.
R.
Checchetto
, N.
Bazzanella
, A.
Miotello
, and P.
Mengucci
, J. Alloys Compd.
446
, 58
(2007
).18.
N.
Bazzanella
, R.
Checchetto
, and A.
Miotello
, Appl. Phys. Lett.
92
, 051910
(2008
).19.
R.
Checchetto
, G.
Trettel
, and A.
Miotello
, Meas. Sci. Technol.
15
, 127
(2004
).20.
Phase Diagrams of Binary Magnesium Alloys
, edited by A. A.
Nayeb-Hashemi
and J. B.
Clark
(ASM International
, Ohio
, 1998
).21.
J. W.
Christian
, in The Theory of Transformations in Metals and Alloys
, 3rd ed., edited by I.
Part
(Pergamon
, London
, 2002
).22.
A.
Andreasen
, T.
Vegge
, and A. S.
Pedersen
, J. Phys. Chem. B
109
, 3340
(2005
).23.
24.
Y. C.
Lee
, A. K.
Dahle
, and D. H.
StJohn
, Metall. Mater. Trans. A
31
, 2895
(2000
).25.
© 2009 American Institute of Physics.
2009
American Institute of Physics
You do not currently have access to this content.
