THE AGING OF NUCLEI IN A BINARY MIXTURE

被引：7

作者：

COUTSIAS, EA ^{[1
]}

NEU, JC ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,MATH SCI RES INST,BERKELEY,CA 94720

来源：

PHYSICA D | 1984年 / 12卷 / 1-3期

关键词：

In the evolution of first order phase transitions; there is a stage called Ostwald Ripening; or aging [1]A. t the onset; homogeneously distributed nuclei of one phase are surrounded by supersaturated medium consisting of the other phase. The larger nuclei grow and deplete the supersaturation of the surrounding phase; and this leads to the decay of the smaller nuclei. The demise of the smaller nuclei replenishes the supersaturation of the surrounding phase and supports the continued growth of the large nuclei. This phenomenology is described quantitatively in an analysis of I. Lifshitz and V. Slyozov [2].T hey find that in a medium with a spatially uniform distribution of nuclei which occupy only a small fraction of the total volume; the supersaturation and density of nuclei decrease with Ume like 1-1/3 and t -1 respectively; while the mean nuclear radius increases like t 1/3. In practice; this description must be modified after sufficiently large times; due to processes such *This research partially supported by AFOSR Grant No. AFOSR-82-0277;

D O I：

10.1016/0167-2789(84)90533-5

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

引用

页码：295 / 302

页数：8