Abstract
Using DSC technique, the chemical interaction in Bi2O3+MO2 mixtures resulting the Bi12MO20 phase, (M=Ti, Ge and Si) was monitored. Kinetic parameters for the primary stage of interaction were yielded by the non-isothermal method of kinetic evaluation of experimental heat flux DSC curves. The model of three-dimensional diffusion according to Jander was fitted as the best in a statistical sense.
Zusammenfassung
Mittels DSC wurde die Bildung von Bi12MO20-Phasen aus Bi2O3+ MO2-Gemischen (mitM= Ti, Ge uns Si) untersucht. Die kinetischen Parameter für den ersten Schritt der Reaktion erhielt man mittels einer nichtisothermen Methode der kinetischen Auswertung der experimentellen Wärmefluß-DSC-Diagramme. Als bestes Modell zur Beschreibung des Vorganges ergab sich das dreidimensionale Diffusions modell von Jander.
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Suleimenova, G.S., Skorikov, V.M. Studies on the process of Bi12MO20 (M=Ti, Ge, Si) formation from oxides. Journal of Thermal Analysis 38, 835–841 (1992). https://doi.org/10.1007/BF01979415
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DOI: https://doi.org/10.1007/BF01979415