New criterion in predicting glass forming ability of various glass-forming systems

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)249-254
Journal / PublicationChinese Physics B
Volume17
Issue number1
Publication statusPublished - Jan 2008
Externally publishedYes

Abstract

It has been confirmed that glass-forming ability (GFA) of supercooled liquids is related to not only liquid phase stability but also the crystallization resistance. In this paper, it is found that the liquid region interval (Tl - Tg) characterized by the normalized parameter of Tg/Tl could reflect the stability of glass-forming liquids at the equilibrium state, whilst the normalization of supercooled liquid region ΔTx=(Tx - Tg), i.e. ΔTx/Tx (wherein Tl is the liquidus temperature, Tg the glass transition temperature, and Tx the onset crystallization temperature) could indicate the crystallization resistance during glass formation. Thus, a new parameter, defined as ξ = Tg/Tl+ΔTx/Tx is established to predict the GFA of supercooled liquids. In comparison with other commonly used criteria, this parameter demonstrates a better statistical correlation with the GFA for various glass-forming systems including metallic glasses, oxide glasses and cryoprotectants.

Research Area(s)

  • Criterion, Glass forming ability, Glass-forming systems