Speed-dependent ice bandings in freezing colloidal suspensions

Jiaxue You, Jincheng Wang, Lilin Wang, Zhijun Wang, Junjie Li, Xin Lin

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

Formation mechanism of speed-dependent ice bandings in freezing colloidal suspensions, of significance in frost heaving and materials science, remains a mystery. With quantitative experiments, we propose a possible mechanism of speed-dependent ice bandings by focusing on the particle packing density and dynamic interface undercooling. The particle packing density ahead of the freezing interface decreases with increasing pulling speeds, attributed to the speed-dependent packing of particles. Through affecting the curvature undercooling of pore ices, the speed-dependent packing of particles can be used to explain speed-dependent thicknesses of ice bandings. The dynamic interface undercooling was obtained to explore curvature undercooling of pore ices and quantitative details of transient interface positions, speeds and undercooling were given. All the evidences imply that the speed-dependent particle packing and dynamic interface undercooling are responsible for speed-dependent ice bandings.

源语言英语
页(从-至)126-132
页数7
期刊Colloids and Surfaces A: Physicochemical and Engineering Aspects
543
DOI
出版状态已出版 - 20 4月 2018

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