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

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dc.contributor.author Svoboda, Roman
dc.date.accessioned 2022-06-03T12:07:49Z
dc.date.available 2022-06-03T12:07:49Z
dc.date.issued 2021
dc.identifier.issn 0955-2219
dc.identifier.uri https://hdl.handle.net/10195/79003
dc.description.abstract 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. eng
dc.format p. 7862-7867 eng
dc.language.iso eng
dc.publisher Elsevier Science eng
dc.relation.ispartof Journal of the European Ceramic Society, volume 41, issue: 15 eng
dc.rights open access eng
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject JMA model applicability eng
dc.subject theoretical simulation eng
dc.subject kinetic prediction eng
dc.subject JMA model cze
dc.subject teoretická simulace cze
dc.subject kinetická predikce cze
dc.title Crystallization of glasses - When to use the Johnson-Mehl-Avrami kinetics? eng
dc.title.alternative Krystalizace skel - Kdy použít Johnson-Mehl-Avrami kinetiku? cze
dc.type article eng
dc.description.abstract-translated Aplikovateplnost Johnson-Mehl-Avrami kinetického modelu (JMA) byla testována pomocí analýzy nesymetrie píků. Teoretické simulace byly následně analyzovány a popsány JMA modelem spolu s vytvořením grafu funkce z(alfa). Hodnoty korelačních koeficientů byly stanoveny. Na základě analýzy byla doporučena oblast s vysokou mírou přesnosti kinetické predikce. cze
dc.peerreviewed yes eng
dc.publicationstatus published version eng
dc.identifier.doi 10.1016/j.jeurceramsoc.2021.08.026
dc.relation.publisherversion https://www.sciencedirect.com/science/article/pii/S0955221921005938?via%3Dihub
dc.rights.licence CC BY 4.0
dc.identifier.wos 000705179500006
dc.identifier.scopus 2-s2.0-85113178740
dc.identifier.obd 39886531


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