SODIUM DIFFUSION IN GLASS .2. MIXED NA-K SILICATE-GLASSES

被引：31

作者：

LIM, C

DAY, DE

机构：

[1] UNIV MISSOURI,DEPT CERAM ENGN,ROLLA,MO 65401

[2] UNIV MISSOURI,GRAD CTR MAT RES,ROLLA,MO 65401

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1977年 / 60卷 / 11-1期

关键词：

Glass - Metal ions - Sodium alloys - Sodium compounds - Diffusion in liquids - Isotopes - Silicates;

D O I：

10.1111/j.1151-2916.1977.tb14085.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The isotope effect for 22Na/24Na diffusion was used to investigate the sodium ion transport mechanism in mixed Na-K silicate glasses. A combined vacancy-interstitialcy mechanism provided the best agreement with the experimental 22Na/24Na isotope effect data. At low temperatures sodium diffusion occurs predominantly by 2-atom interstitialcy jumps, but with increasing temperature an increasing fraction of the ions diffuse by a single-atom vacancy mechanism. © 1977 Wiley. All rights reserved.

引用

页码：473 / 477

页数：5

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