Liquid fragility determination of oxide glass-formers using temperature-modulated DSC

Tobias K. Bechgaard, Ozgur Gulbiten, John Mauro, Yuanzheng Yue, Mathieu Bauchy, Morten M. Smedskjaer

Research output: Contribution to journalArticle

Abstract

Glass-forming liquids exhibit a pronounced diversity in the viscosity-temperature relation. This has been characterized by the liquid fragility index to quantify the extent of the non-Arrhenian flow. Precise and accurate determination of liquid fragility is important for understanding a range of phenomena and controlling industrial glass melting processes. In this study, we use temperature-modulated differential scanning calorimetry (TM-DSC) to determine liquid fragility of a wide range of oxide compositions, including tellurites, borates, and silicates. We compare our fragility data to those determined using viscometry and the Moynihan DSC approach. We find that TM-DSC is a useful method for determination of fragility, as it exhibits higher sensitivity and provides an easier and more reliable determination of characteristic temperatures compared to the Moynihan approach. Moreover, TM-DSC is faster and requires smaller sample volume compared to the viscometric approach. However, we also observe that TM-DSC tends to either overestimate or underestimate the fragility of very strong and highly fragile compositions, respectively.

Original languageEnglish (US)
Pages (from-to)321-329
Number of pages9
JournalInternational Journal of Applied Glass Science
Volume10
Issue number3
DOIs
StatePublished - Jul 1 2019

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Oxides
Glass
Differential scanning calorimetry
Liquids
Temperature
Silicates
Borates
Viscosity measurement
Chemical analysis
Melting
Viscosity

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Bechgaard, Tobias K. ; Gulbiten, Ozgur ; Mauro, John ; Yue, Yuanzheng ; Bauchy, Mathieu ; Smedskjaer, Morten M. / Liquid fragility determination of oxide glass-formers using temperature-modulated DSC. In: International Journal of Applied Glass Science. 2019 ; Vol. 10, No. 3. pp. 321-329.
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Liquid fragility determination of oxide glass-formers using temperature-modulated DSC. / Bechgaard, Tobias K.; Gulbiten, Ozgur; Mauro, John; Yue, Yuanzheng; Bauchy, Mathieu; Smedskjaer, Morten M.

In: International Journal of Applied Glass Science, Vol. 10, No. 3, 01.07.2019, p. 321-329.

Research output: Contribution to journalArticle

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