| Original Articles |
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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 |
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| Cite this article: |
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X. H. Du, J. C. Huang 2007 Chin. Phys. Lett. 24 1335-1338 |
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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.
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| Keywords:
71.23.Cq
81.05.Kf
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Received: 20 January 2007
Published: 23 April 2007
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| PACS: |
71.23.Cq
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(Amorphous semiconductors, metallic glasses, glasses)
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81.05.Kf
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(Glasses (including metallic glasses))
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