Nucleus-liquid interfacial energy of elements
Nucleus-liquid interfacial energy of elements
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DOI：
10.1016/j.colsurfa.2005.12.015
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发表时间：
2006-04-20
影响因子：
5.2
通讯作者：
Jiang, Q
中科院分区：
文献类型：
--
作者：
Lu, HM;Wen, Z;Jiang, Q
在已有的体相和尺寸相关的固液界面能y（s10）和y（sl）（r）模型的基础上，加入了与温度相关的熔融焓Δ H-m（T）和改进的晶体与液体之间的吉布斯自由能差函数g（m）（T），建立了y（sl）（r，T）函数的定量模型。据发现，特恩布尔的过冷实验的γ（CNT）值对应于模型预测的核-液界面能，而不是y（s10）。这种对应关系导致了对经典成核理论的重新审视。此外，发现γ（sl）（r，T）和Δ H-m/V之间的线性关系在任何过冷度下总是有效的，其中V是摩尔体积。最后讨论了元素的γ（sl）（r，T）的尺寸范围。(c)2005 Elsevier B. V.保留所有权利。
Based on the previous models for bulk and size-dependent solid-liquid interfacial energy y(s10) and y(sl)(r) with the additional temperature-dependent melting enthalpy Delta H-m(T) and improved Gibbs free energy difference functions g(m)(T) between crystal and liquid, y(sl)(r,T) function is quantitatively modeled. It is found that the gamma(CNT) values of Turnbull's undercooling experiments correspond to the model predictions for the nucleus-liquid interfacial energy rather than y(s10). This correspondence leads to the reexaminations on the classic nucleation theory. Moreover, the linear relationship between gamma(sl)(r,T) and Delta H-m/V is found to be always valid at any degree of undercooling where V is the molar volume. Finally, the size range of gamma(sl)(r,T) for elements is also discussed. (c) 2005 Elsevier B.V. All rights reserved.