Artículo
Extension of the Classical Theory of Crystallization to Non-isothermal Regimes: Application to Nanocrystallization Processes
Autor/es | Blázquez Gámez, Javier Sebastián
Borrego Moro, Josefa María Conde Amiano, Clara Francisca Conde Amiano, Alejandro Lozano Pérez, S. |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2012 |
Fecha de depósito | 2023-06-13 |
Publicado en |
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Resumen | The non-isothermal kinetics of primary crystallization processes is studied from numerically generated curves and their predictions have been tested in several nanocrystallization processes. Single processes and transformations ... The non-isothermal kinetics of primary crystallization processes is studied from numerically generated curves and their predictions have been tested in several nanocrystallization processes. Single processes and transformations involving two overlapped processes in a non-isothermal regime have been generated and deviations from isokinetic behavior are found when the overlapped processes have different activation energies. In the case of overlapped processes competing for the same type of atoms, the heating rate dependence of the obtained Avrami exponent can supply information on the activation energies of each individual processes. The application to experimental data of nanocrystallization processes is consistent with a limited growth approximation. In the case of preexisting crystallites in the as-cast samples, predictions on the heating rate dependence of the obtained Avrami exponents of multiple processes have been confirmed. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) Junta de Andalucía ESTEEM (Formación Europea en Seguridad para la Movilidad Europea) |
Identificador del proyecto | MAT2010-20537
P10-FQM-6462 026019 |
Cita | Blázquez Gámez, J.S., Borrego Moro, J.M., Conde Amiano, C.F., Conde Amiano, A. y Lozano Pérez, S. (2012). Extension of the Classical Theory of Crystallization to Non-isothermal Regimes: Application to Nanocrystallization Processes. Journal of Alloys and Compounds, 544, 73-81. https://doi.org/10.1016/j.jallcom.2012.08.002. |
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