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Lamellar eutectic growth at minimum entropy production
Author(s) -
Wolczyński Waldemar
Publication year - 1989
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170241108
Subject(s) - eutectic system , lamellar structure , entropy production , thermodynamics , growth rate , entropy (arrow of time) , curvature , materials science , statistical physics , mathematics , physics , alloy , metallurgy , geometry
A mode of determination of entropy production per unit time for regular eutectic growth is presented. In order to integrate this thermodynamic quantity, both diffusion equation and coefficient of the interplay between curvature of an interface and concentration field are taken into account. The adaptation of the criterion of minimum entropy production allowed to show the equation (growth law) describing the lamellar structure formation under imposed temperature gradient and given growth rate for an alloy under investigation.