Kinetic analysis of the crystallization processes in the glasses of the Bi–As–S system

• Published in: Journal of thermal analysis and calorimetry Vol. 110; no. 1; pp. 379 - 384
• Main Authors: SILJEGOVIC, M. V, LUKIC-PETROVIC, S. R, STRBAC, G. R, PETROVIC, D. M
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Dordrecht Springer Netherlands 01-10-2012; Springer
• Subjects: Analytical Chemistry; Applied sciences; Building materials. Ceramics. Glasses; Chemical industry and chemicals; Chemistry; Chemistry and Materials Science; Exact sciences and technology; Glasses; Inorganic Chemistry; Measurement Science and Instrumentation; Physical Chemistry; Polymer Sciences; Thermal properties; Crystal growth; Chalcogenide glasses; Crystallization; Differential scanning calorimetry; Sulfur Compounds; Arsenic Compounds; Thermal analysis; Bismuth Compounds; Kinetics
• ISSN: 1388-6150; 1588-2926; 1572-8943
• DOI: 10.1007/s10973-012-2353-z

Kinetic analysis of the crystallization process in Bi
4
(As
2
S
3
)
96
and Bi
6
(As
2
S
3
)
94
glasses was performed based on DSC curves recorded under non-isothermal measurement conditions. Samples were thermally treated at different heating rates in the temperature range 300–770 K. The activation energy of crystallization
E
and the pre-exponential factor
K
0
are determined by the Kissinger method and the characteristic crystallization parameters
m
and
n
of investigated glasses by the Matusita method. For both crystallization processes the glass with 4 at.% of Bi is characterized by the mechanism of volume nucleation, which is manifested in the form of two-dimensional growth at the first crystallization process, and as three-dimensional at the second one. On the other hand, in the sample with 6 at.% Bi, the average value of the parameter
m
is close to one, which indicates one-dimensional crystal growth. Compatibility of the values of the parameters
m
and
n
suggests that this sample has a large number of crystallization centers, which do not increase significantly during the thermal treatment.