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Kinetic Analysis of Nonisothermal Crystallization

Published online by Cambridge University Press:  21 February 2011

K. F. Kelton
K. F. Kelton*
Affiliation:
Department of Physics, Washington University, St. Louis, MO 63130, kfk@wuphys.wustl.edu
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Abstract

A realistic computer model for polymorphic crystallization under isothermal and nonisothermal conditions, which takes proper account of time-dependent nucleation behavior and cluster-size-dependent growth, is presented. A new correction to the standard Johnson-Mehl-Avrami-Kolmogorov (JMAK) statistical analysis that takes account of finite sample size is incorporated to simulate data taken from fine particles and nano-structured materials. Model predictions compare well with experimental data obtained from calorimetric studies of the polymorphic crystallization of lithium disilicate glass. The computer model is employed to evaluate commonly used methods of analysis for calorimetric data and to suggest new approaches for extracting kinetic parameters.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 398: Symposium C – Thermodynamics and Kinetics of Phase Transformations , 1995 , 413
Copyright
Copyright © Materials Research Society 1998

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References

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