Herein, the crystallization kinetics of the intermetallic CoSn phase, nucleated and grown in the microstructure of a binary CoSn alloy, have been reported. Differential scanning calorimetry traces under non-isothermal conditions were obtained and used to extract the activation energy (Ea) for the crystallization of the CoSn phase at various heating rates. The obtained values of Ea were validated by the application of several isoconversion methods. The minimum value of E was 1000 kJ mol−1, which occurred at 853 K. The observed behavior of Ea showed a strong temperature dependence, wherein it decreased with increasing temperature. This suggests that the rate constant for the crystallization of the CoSn phase is determined by the rates of two processes—nucleation and diffusion. The precise description of the crystallization process for the CoSn phase reveal that the reaction mechanism of this phase is following the first-order reaction.
|Original language||English (US)|
|Number of pages||12|
|Journal||Journal of Physics Communications|
|State||Published - Jan 4 2021|
Bibliographical noteKAUST Repository Item: Exported on 2022-06-14
Acknowledgements: The author would like acknowledge King Abdullah University of Science and Technology (KAUST) and Prof. Osman Baker for providing access to the instruments. The author also thanks prof. Ahmad Al-Joraid from Taibah University for providing accesses to the software programs.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.