TITLE

Electric current enhanced defect mobility in Ni3Ti intermetallics

AUTHOR(S)
Garay, Javier E.; Glade, Stephen C.; Anselmi-Tamburini, Umberto; Asoka-Kumar, Palakkal; Munir, Zuhair A.
PUB. DATE
July 2004
SOURCE
Applied Physics Letters;7/26/2004, Vol. 85 Issue 4, p573
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The effect of the application of a dc current on the annealing of point defects in Ni3Ti was investigated by positron annihilation spectroscopy. An increased defect annealing rate was observed under the influence of the current and was attributed to a 24% decrease in the activation energy of mobility. The results are interpreted in terms of the electron wind effect and the complex nature of diffusion in ordered intermetallic phases. They provide direct evidence for an increase in defect mobility in ordered intermetallics under the influence of a current.
ACCESSION #
13885869

 

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