Univerzita PardubiceFakulta chemicko- technologická

Univerzita Pardubice

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Publikace detail

Crystallization kinetics of a-Se

Autoři: Svoboda Roman | Málek Jiří

Rok: 2014

Druh publikace: článek v odborném periodiku

Název zdroje: Journal of Thermal Analysis and Calorimetry

Název nakladatele: Springer

Strana od-do: 81-91

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	Krystalizační kinetika amorfního selenu	V této práci byla studována krystalizační kinetika amorfního selenu pomocí DSC metody s následnou dekonvolucí získaných dat pomocí Fraser-Suzuki metody.	krystalizace; kinetika; DSC; amorfní Se; Fraser-Suzuki dekonvoluce
eng	Crystallization kinetics of a-Se	Differential scanning calorimetry was used to study crystallization behavior in selenium glass under non-isothermal conditions. In the current work, which is the second in a sequence of articles dealing with crystallization kinetics of complex processes, a novel method of modified Fraser-Suzuki deconvolution is applied. This method is complementary to that introduced in the preceding article-the advanced interpretation of characteristic kinetic functions. It is shown that together these two approaches provide a reliable and accurate kinetic analysis evaluation for complex and overlapping processes. Based on the determination of kinetic parameters depending on particle size, extensive information about the nature of the involved surface and bulk crystallization mechanisms is obtained. Based on this information, the deconvolution in terms of the Johnson-Mehl-Avrami process is performed, separating the involved mechanisms. The resulting concept not only describes very well, both qualitatively and quantitatively, the crystallization process in glassy selenium, but it is also capable of explaining all accessible data from literature on this topic. The complexity of the description, together with the general validity of the introduced approaches, appears to offer a valuable source of information for numerous material science applications.	Crystallization kinetics; DSC; JMA model; Se glass; Fraser-Suzuki deconvolution