Abstract:
Crystallization behavior of the selenium glass was studied by means of the
differential scanning calorimetry under non-isothermal conditions. Two new
approaches to the evaluation of crystallization kinetics — advanced interpretation
of characteristic kinetic functions and modified Fraser–Suzuki deconvolution —
were applied. The determination of kinetic parameters in the dependence on
particle size can provide an extensive amount of information about the nature of
the involved surface and bulk crystallization mechanisms. Based on these
information, the deconvolution in terms of the Johnson–Mehl–Avrami process was
performed, separating the two mechanisms. The results not only both, qualitatively
and quantitatively, describe the crystallization process in glassy selenium but also
explain various data from literature on this topic. Introduced deconvolution may
represent a new approach to gaining information about complex crystallization
processes for numerous material science applications.
