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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LM2018103" target="_blank" >LM2018103: Výzkumná infrastruktura CEMNAT</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

—

Svazek periodika

41

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

7862-7867

Kód UT WoS článku

000705179500006

EID výsledku v databázi Scopus

2-s2.0-85113178740