A Modified Glass Formation Criterion for Various Glass Forming Liquids with Higher Reliability
X. H. Du 1,2, J. C. Huang1
1Institute of Materials Science and Engineering, National Sun Yat-Sen University, Kaohsiung 8042Department of Materials Engineering, Shenyang Institute of Aeronautical Engineering, Shenyang, 110034
A Modified Glass Formation Criterion for Various Glass Forming Liquids with Higher Reliability
X. H. Du 1,2;J. C. Huang1
1Institute of Materials Science and Engineering, National Sun Yat-Sen University, Kaohsiung 8042Department of Materials Engineering, Shenyang Institute of Aeronautical Engineering, Shenyang, 110034
摘要A modified indicator of the glass forming ability (GFA) from the previous γ=Tx/(Tl+Tg) for various glass forming liquids is proposed based on a conceptual approach which combines more acceptable physical metallurgy views in terms of the time-temperature-transformation diagrams. It is found that the glass forming ability for glass forming liquids is closely associated mainly with two factors, i.e. (2Tx-Tg) and Tl (wherein Tx is the onset crystallization temperature, Tg the glass transition temperature, and Tl the liquidus temperature), and could be predicated by a unified parameter γm defined as (2Tx-Tg)/Tl. This approach is confirmed and validated by experimental data in various glass forming systems including oxide glasses, cryoprotectants and metallic glasses, which all shows a higher reliability when their glass forming ability is predicted by the modified parameter.
Abstract：A modified indicator of the glass forming ability (GFA) from the previous γ=Tx/(Tl+Tg) for various glass forming liquids is proposed based on a conceptual approach which combines more acceptable physical metallurgy views in terms of the time-temperature-transformation diagrams. It is found that the glass forming ability for glass forming liquids is closely associated mainly with two factors, i.e. (2Tx-Tg) and Tl (wherein Tx is the onset crystallization temperature, Tg the glass transition temperature, and Tl the liquidus temperature), and could be predicated by a unified parameter γm defined as (2Tx-Tg)/Tl. This approach is confirmed and validated by experimental data in various glass forming systems including oxide glasses, cryoprotectants and metallic glasses, which all shows a higher reliability when their glass forming ability is predicted by the modified parameter.
X. H. Du;J. C. Huang. A Modified Glass Formation Criterion for Various Glass Forming Liquids with Higher Reliability[J]. 中国物理快报, 2007, 24(5): 1335-1338.
X. H. Du, J. C. Huang. A Modified Glass Formation Criterion for Various Glass Forming Liquids with Higher Reliability. Chin. Phys. Lett., 2007, 24(5): 1335-1338.
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