SOLUBILITY AND DIFFUSIVITY OF ARGON IN VITREOUS SILICA

被引：27

作者：

NAKAYAMA, GS

SHACKELFORD, JF

机构：

[1] Division of Materials Science and Engineering, University of California, Davis

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1990年 / 126卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0022-3093(90)90826-8

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：

Saturation of vitreous silica fibers by argon gas has provided solubility and diffusivity data in good agreement with previous experimental and modeling studies. Over the temperature range of 525-675-degrees-C, the solubility of argon in vitreous silica can be given by S = (2.09 x 10+21 atoms/(m3 atm)) exp((+ 31.5 kJ/g atom)/RT). These data indicate that the density of interstitial solubility sites accessible to argon atoms is 1.1 x 10(26) m-3, consistent with the log-normal model of interstitial site size distribution, a useful illustration of medium-range glass structure. Over the temperature range of 500-905-degrees-C, the diffusivity of argon in vitreous silica can be given by: D = (0.506 x 10(-8) m2/s) exp((- 113 kJ/g atom)/RT).

引用

页码：249 / 254

页数：6

共 27 条

[1] NONISOTHERMAL DIFFUSION MEASUREMENTS ON GRANULAR SOLIDS - NOBLE GAS DIFFUSION IN FUSED SILICA [J].