Dependence of a glass transition temperature on a heating rate in DTA experiments for glasses containing transition metal oxides
PBN-AR
Instytucja
Wydział Fizyki (Politechnika Warszawska)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Journal of Non-Crystalline Solids
ISSN
0022-3093
EISSN
Wydawca
Elsevier BV - North-Holland
DOI
Rok publikacji
2016
Numer zeszytu
Strony od-do
155-161
Numer tomu
443
Liczba arkuszy
0.5
Słowa kluczowe
en
Differential thermal analysis; Extrapolation; Glass; Heating; Heating rate; Metals; Temperature; Thermoanalysis; Titanium oxides; Transition metal compounds; Transition metals, DTA measurements; High heating rates; Kissinger; Lasocka's formula; Relative errors; Thermal events; Transition metal oxide glass; Transition-metal oxides, Glass transition
Streszczenia
Język
en
Treść
It has been known for > 60 years that thermal events taking place during DTA measurements (e.g. glass transition or crystallization) depend on heating rate. In this paper, we collected numerous data of DTA measurements of various glasses containing transition metal oxides (V2O5, FeO, Ti2O3) carried out at different heating rates (1 to 25 °C/min). We showed that glass transition temperature vs. heating rate can be well described by both Kissinger's and Lasocka's formulas. Additionally, we discuss an accuracy of extrapolation based on data taken at high heating rates to low heating rates. Our result show that glass transition temperatures at low heating rates can be satisfactorily extrapolated from higher ones, with a relative error < 3.5% in every case (and mostly < 1%), due to linear change with heating rate both in Kissinger's and Lasocka's plots. © 2016 Elsevier B.V. All rights reserved.
Inne
System-identifier
WUT0114f610834d442ab55ddc65e220ab98
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