Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 77: Issue 1
Thermal analysis and thermochemistry of vitreous into crystalline state transition
Author:
L. Stoch AGH - University of Science and Technology Faculty of Materials Science and Ceramics al. Mickiewicza 30 30-059 Cracow Poland 30-059 Cracow Poland

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Pages:
7–16
Online Publication Date:
03 Nov 2004
Publication Date:
01 Jul 2004
Article Category:
Research Article
DOI:
https://doi.org/10.1023/b:jtan.0000033182.90571.ce
Keywords:
thermochemistry; thermal analysis; glass; nanocrystallization; glass transformation
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Abstract  

Thermochemistry and structural mechanism of crystallization of MgO-Al2O3-SiO2 glasses with TiO2 as crystallization activator were studied. Thermal and HREM investigation proved that near the Tg temperature crystallization is going by rearrangement of glass structure elements and part of its components redistribution like at disorder — order phase transition in solid bodies. Nanocrystals of Mg-titanate and high quartz structure solid solution are formed then. Next enstatite and cordierite are crystallizing. Thermochemical and chemical bonds strength analysis indicate that during multistage crystallization of glasses, kind and order of crystal phase formation, is determined by the glass structure decomposition progress and its particular components release accompanying increase of temperature. It has been proved that molar heat capacity change (ΔCp) accompanying the glass transition is the significant measure of degree of changes in the structure of glass preceding crystallization.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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