THEORY OF ICE PREMELTING IN MONOSIZED POWDERS

被引：100

作者：

CAHN, JW ^{[1
]}

DASH, JG ^{[1
]}

FU, HY ^{[1
]}

机构：

[1] NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899

来源：

JOURNAL OF CRYSTAL GROWTH | 1992年 / 123卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0022-0248(92)90014-A

中图分类号：

O7 [晶体学];

学科分类号：

0702 [物理学]; 070205 [凝聚态物理]; 0703 [化学]; 080501 [材料物理与化学];

摘要：

The gradual freezing of water in inert porous media is considered to be a consequence of interfacial and grain boundary melting combined with curvature-induced depression of the melting point. The unfrozen fraction is calculated for monosized powders of spherical particles. It is found that the unfrozen fraction contains separate terms associated with interfacial and curvature melting, with distinctive dependencies on temperature and particle size. The calculated fraction is in excellent agreement with measurements on pure water in graphitized carbon black and polystyrene micron-sized spheres. The introduction of dissolved impurities adds a third term, with an intermediate functional dependence.

引用

页码：101 / 108

页数：8

共 23 条

[1]

ARCONE SA, 1985, J PHYS E, V19, P448

[2]

CHARGE-TRANSFER IN THUNDERSTORMS AND THE SURFACE MELTING OF ICE [J].