IMPURITY-DRAG EFFECT ON GRAIN GROWTH

被引：83

作者：

DROLET, JP

GALIBOIS, A

机构：

[1] Department of Mining and Metallurgy, Laval University, Quebec 10, Que.

来源：

ACTA METALLURGICA | 1968年 / 16卷 / 12期

关键词：

D O I：

10.1016/0001-6160(68)90035-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In the present grain growth study, multi- and double-anneals are performed with zone-refined lead. The results show that two steady-state grain growth kinetics are possible when the driving force decreases below a critical value. Similar phenomena are observed with zone-refined tin. Two activation energies, one for each kinetic rate, are calculated for the same impurity level. By applying Cahn's impurity-drag theory to grain growth, all the results are well interpreted physically in terms of an impurity-grain boundary interaction even if the concentration is as low as 1 ppm. It follows also from our experiments that a given driving force can be regarded as a high, intermediate or low driving force depending upon the bulk impurity concentration. © 1968.

引用

页码：1387 / &