Surface segregation in random alloys

Kumar, D. ; Mookerjee, A. ; Kumar, V. (1976) Surface segregation in random alloys Journal of Physics F - Metal Physics, 6 (5). p. 725. ISSN 0305-4608

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The free energy of a semi-infinite model binary alloy is set up. It is described essentially by two physically identifiable parameters. On minimizing this free energy under suitable constraints in a Bragg-Williams type approximation, it is shown that the composition varies as one moves in from the surface into the bulk. This 'surface segregation' of a constituent is studied under different conditions. Agreement has been obtained with the experimental results on Ni-Au alloy.

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Deposited On:26 Dec 2011 12:31
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