Title
Non-monotonic behaviour with concentration of the surface tension of certain binary liquid alloys Non-monotonic behaviour with concentration of the surface tension of certain binary liquid alloys
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
London ,
Subject
Physics
Source (journal)
Physics and chemistry of liquids. - London
Volume/pages
46(2008) :5 , p. 522-526
ISSN
0031-9104
ISI
000260382800008
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The surface tension ó(c) of most liquid binary alloys usually varies with concentration c in a monotonic way between the values ó1 and ó2 of the two pure metals, and this behaviour is well explained by current models. Some alloys show deviations from this ideal behaviour. One of those is Fe-B. The surface tension of this liquid alloy shows a minimum at 17 atomic % B, which corresponds well with the composition of the eutectic point in the phase diagram, followed by a maximum at a concentration of 24 atomic % B or higher. The usual models for the surface tension of liquid binary alloys do not explain those exceptional features, and we propose that a model involving the concentration fluctuations in the liquid alloy has the proper ingredients to account for the features in Fe-B and similar alloys.
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