Crystallization of glasses - When to use the Johnson-Mehl-Avrami kinetics?

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F21%3A39918029" target="_blank" >RIV/00216275:25310/21:39918029 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0955221921005938?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0955221921005938?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2021.08.026" target="_blank" >10.1016/j.jeurceramsoc.2021.08.026</a>

Result language
angličtina
Original language name
Crystallization of glasses - When to use the Johnson-Mehl-Avrami kinetics?
Original language description
Applicability of the Johnson-Mehl-Avrami (JMA) model was tested based on the universal criterion of the kinetic peak asymmetry. Theoretical simulations were used to prepare variety of kinetic peaks with different asymmetries, which were described by the JMA model and the masterplot function z(alpha). Based on the correlation between the simulated crystallization peaks and the JMA description, the following intervals of the degrees of conversion corresponding to the z(alpha) function maxima can be attributed to the respective values of the correlation coefficients: alpha(max,z) = 0.620 - 0.665 corresponds to the better correlation with the JMA model than r(2) = 0.999; alpha(max,z) = 0.585 - 0.705 indicates the correlation better than r(2) = 0.995. These intervals are significantly more lenient than those proposed in the original derivation of the masterplot approach. Even at r(2) = 0.995 the fit by the JMA model provides very accurate kinetic predictions utilizable for preparation of glass-ceramics.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/LM2018103" target="_blank" >LM2018103: Center of Materials and Nanotechnologies - Research Infrastructure</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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