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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Fragility of metallic glass-forming liquids: A simple thermodynamic connection
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Fragility of metallic glass-forming liquids: A simple thermodynamic connection

机译：金属玻璃形成液的易碎性：简单的热力学连接

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We will demonstrate that kinetic fragility of a glass-forming liquid is quantitatively related to Delta S-f(T-m-T-K), where Delta S-f is the entropy of fusion, T-m the melting point, and T-K the Kauzmann temperature of a glass-forming liquid. A positive correlation between Delta Sf (T-m - T-K) and the kinetic fragility was found to hold in metallic glass-forming liquids, where both thermodynamic and kinetic data are available. It will be demonstrated that such correlation is consistent with the energy landscape model of the glass transition. Furthermore, the thermodynamic fragility index Delta S-f(T-m-T-K) was reduced to Delta S-f/T-m assuming T-K approximate to T-m/2, and the correlation between Delta S-f/ T-m and kinetic fragility was discussed within the context of recently proposed cluster model of the glass transition. (c) 2005 Elsevier B.V. All rights reserved.
机译：我们将证明玻璃形成液的动力学脆性与Delta S-f（T-m-T-K）定量相关，其中Delta S-f是聚变熵，T-m是熔点，T-K是玻璃形成液的Kauzmann温度。发现在可形成热力学和动力学数据的金属玻璃形成液体中，ΔSf（T-m-T-K）与动力学脆性之间存在正相关关系。将证明这种相关性与玻璃化转变的能态模型是一致的。此外，假设TK接近Tm / 2，热力学脆性指数Delta Sf（TmTK）降低为Delta Sf / Tm，并且在最近提出的玻璃团簇模型的背景下讨论了Delta Sf / Tm与动力学脆性之间的相关性。过渡。 （c）2005 Elsevier B.V.保留所有权利。

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