In DSC thermal analysis, what is the difference between Thermal stability (Tx - Tg), Hruby's ratio {(Toc-Tg) / (Tm -Toc} and thermal stability parameter {delta T (Tc - Toc) / Tg }.
These three are used to measure thermal stability of glasses. What is the difference between them?
I think you may find helpful the following review article: J. Šesták, A. Kozmidis-Petrović and Ž. Živković, "Crystallization kinetics accountability and the correspondingly developed glass-forming criteria – A personal recollection at the forty years anniversaries", J. Min. Metall. Sect. B-Metall. 47(2) B (2011) 229 - 239, available at: http://www.jmmab.com/index.php/contents/vol-47-2-b-2011/14-j-sestak-a-kozmidis-petrovic-and-z-zivkovic. The Hrubý's ratio was also recently discussed at the following publication: Jaroslav Šesták, Carlos A. Queiroz, Jirı J. Mareš and Miroslav Holecek, "Some Aspects of Vitrification, Amorphisation and Disordering and the Generated Extent of Nano-Crystallinity", Chap. 4 in: “Glassy, Amorphous and Nano-crystalline Material: Thermal Physics, Analysis, Structure and Properties”, Eds: J. Šesták, J. J. Mareš, P. Hubík, Hot Topics in Thermal Analysis and Calorimetry, Vol. 8, 2011, pp. 59-75.
Stability based on Tx-Tg can gives some indications on the possibility of glass to be drawn as fiber optic. Else, the articles indicated by Mr Carlos is very useful.
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