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Investigations of hydrogen uptake in ball-milled TiMgNi
Ist Teil von
International journal of hydrogen energy, 2007-08, Vol.32 (12), p.1928-1932
Ort / Verlag
Oxford: Elsevier Ltd
Erscheinungsjahr
2007
Link zum Volltext
Quelle
Elsevier ScienceDirect Journals Complete
Beschreibungen/Notizen
The hydrogen uptake characteristics of a mechanically milled Ti–Mg–Ni sample processed in accord with that of Lomness et al. [Hydrogen uptake characteristics of mechanically alloyed mixtures of Ti–Mg–Ni. Int J Hydrogen Energy 2002; 27: 915–20] has been shown to rapidly absorb
2.5
wt
%
of hydrogen at
296
K
. This is significantly less than the
11
wt
%
presented by Lomness et al. but occurs at a lower temperature. X-ray diffraction shows that our ball-milled sample comprises low crystallinity elemental Ti, Mg and Ni which converts to
Ti
2
Ni
, Ti and Mg during temperature cycling. Examination of the hydrided sample shows the presence of
Ti
2
NiH
x
(
x
>
0.5
)
,
TiH
y
(
0.7
<
y
<
2
)
and
MgH
2
. Unidentified minor phases are also present.