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Kinetic Study of Solid State Processes
Authors: Málek Jiří | Mitsuhashi Takefumi
Year: 2003
Type of publication: kapitola v odborné knize
Name of source: Proceedings of 3rd International Symposium on Material Chemistry in Nuclear Environment
Publisher name: Japan Atomic Energy Research Institute
Place: Tokai-mura, Japonsko
Page from-to: 149-155
Titles:
Language Name Abstract Keywords
cze Kinetic Study of Solid State Processes A simple method for kinetic analysis of solid-state processes has been developed and the criterial capable of classifying different processes are explored. They provide a useful tool for the determination of the most suitable kinetic model. The method has been applied to the analysis of calorimetric data corresponding to the crystallization processes in amorphous ZrO2. It is found that the crystallization kinetics of amorphous powder sample exhibits a complex behavior under non-isothermal conditions. A two-parameter model provides a satisfactory desription of the crystallization process for isothermal and non-isothermal conditions. This enables better control of crystallization extent in fine ZrO2 powders that is important for preparation of zirconia ceramics with defined properties. xxx
eng Kinetic Study of Solid State Processes A simple method for kinetic analysis of solid-state processes has been developed and the criterial capable of classifying different processes are explored. They provide a useful tool for the determination of the most suitable kinetic model. The method has been applied to the analysis of calorimetric data corresponding to the crystallization processes in amorphous ZrO2. It is found that the crystallization kinetics of amorphous powder sample exhibits a complex behavior under non-isothermal conditions. A two-parameter model provides a satisfactory desription of the crystallization process for isothermal and non-isothermal conditions. This enables better control of crystallization extent in fine ZrO2 powders that is important for preparation of zirconia ceramics with defined properties. kinetics, crystallization, nucleation, growth, calorimetry, zirconium oxide

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