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Phase Coarsening as a Relaxation Phenomenon

Published online by Cambridge University Press:  15 February 2011

S. P. Marsh
S. P. Marsh*
Affiliation:
Naval Research Laboratory, Washington, DC, 20375-5343
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Abstract

Phase coarsening, also known as Ostwald ripening, is generally treated as a growth phenomenon in which the average particle size increases during isothermal aging. However, coarsening is a relaxation process driven by a reduction in the excess interfacial energy of a two-phase structure. This viewpoint introduces a single temporal offset parameter that relates the experimental clock to the asymptotic time scale. Analysis of ripening as a relaxation phenomenon permits accurate determination of the kinetics that is less sensitive to particle morphology. Implications of this approach on measurement and interpretation of ripening kinetics will be discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 580: Symposium E – Nucleation & Growth Processes in Materials , 1999 , 15
Copyright
Copyright © Materials Research Society 2000

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