In situ observation of the unstable lens growth in freezing colloidal suspensions

被引：8
|
作者：
You, Jiaxue [1 ]
Wang, Jincheng [1 ]
Wang, Lilin [2 ]
Wang, Zhijun [1 ]
Li, Junjie [1 ]
Lin, Xin [1 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
[2] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shaanxi, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2018年 / 553卷
关键词：
Colloidal suspensions; Solidification; Ice lens; Growth dynamics; ICE-LENS; SOLIDIFICATION; PARTICLE;
D O I：
10.1016/j.colsurfa.2018.05.092
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
There is a lack of knowledge on the growth dynamics of the formation of a new ice lens without frozen fringe in freezing colloidal suspensions. With experimental observations, we revealed that a new ice lens can be induced by a single ice spear rather than frozen fringe. This ice spear is possibly from the particle-induced undercooled region in front of the freezing interface and the consequent morphological instability. After the appearance of the new ice lens, its growth dynamics are quantitatively analyzed. The growth speed of ice decreases with time, which can be attributed to the premelted film flow-controlled interface movement.
引用
收藏
页码：681 / 688
页数：8
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