Motion and arrest of a molten contact line on a cold surface: An experimental study
Motion and arrest of a molten contact line on a cold surface: An experimental study
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DOI：
10.1063/1.869344
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发表时间：
1997-08-01
影响因子：
4.6
通讯作者：
Sonin, AA
中科院分区：
文献类型：
--
作者：
Schiaffino, S;Sonin, AA
一项实验研究了熔融接触线在模拟熔融液滴接触过冷固体、部分扩散到其上并冻结时所发生情况的条件下的行为。我们将注意力集中在固体和熔体具有相同材料且具有大致相同的热性能的情况，并得出两个结论。首先，我们表明前进的熔融接触线在表观动态接触角处被阻止，对于给定的材料，这主要取决于基于熔点与熔体扩散的固体温度之间的温差的斯特凡数。其次，在接触线停止之前的大部分扩散过程中，熔体的表观动态接触角与接触线速度之间的关系似乎遵循霍夫曼-坦纳-沃伊诺夫定律，平衡接触角为零。 (C) 1997 年美国物理研究所。
An experimental study is presented of the behavior of a molten contact line under conditions which simulate what happens when a molten droplet touches a subcooled solid, spreads partly over it, and freezes. We restrict our attention to the case where the solid and melt are of the same material and have approximately the same thermal properties, and reach two conclusions. First, we show that an advancing molten contact line is arrested at an apparent dynamic contact angle, which for a given material depends primarily on the Stefan number based on the temperature difference between the fusion point and the temperature of the solid over which the melt spreads. Second, during much of the spreading prior to contact-line arrest, the relationship between the melt's apparent dynamic contact angle and the contact-line speed appears to obey the Hoffman-Tanner-Voinov law with the equilibrium contact angle taken as zero. (C) 1997 American Institute of Physics.