Record number :
2141176
Title of article :
Influence of thermal annealing on the hydrogenation properties of mechanically milled AB5-type alloys
Author/Authors :
Ares، نويسنده , , J.R. and Cuevas، نويسنده , , F. and Percheron-Guégan، نويسنده , , A.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
Pages :
5
From page :
76
To page :
80
Abstract :
The influence of mechanical milling and posterior annealing treatment on kinetic and thermodynamic H-properties of AB5-based alloys are here reported. Short milling process yields non-homogeneous microstructural (wide distribution of nano-crystallite sizes and amorphous phase) and morphological alloy powders. Annealing treatment of long-milled alloy produces a homogeneous microstructural alloy. Annealed alloy exhibits a unique nano-crystallite size without presence of amorphous structure. H-capacity in short-milled alloy is higher than for annealed alloy due to the contribution of both amorphous and well crystallised domains. The short-milled alloy exhibits extra H-trapping sites in amorphous domains as detected by thermal desorption. Absorption hydrogen kinetic in short-milled alloy is faster than for annealed alloy mainly due to fast H-transport through amorphous domains.
Keywords :
Hydrides , Mechanical milling , Intermetallic compounds , Nano-crystalline
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
Serial Year :
2004
Link To Document :
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