DEUTERIUM PERMEATION AND DIFFUSION IN HIGH-PURITY BERYLLIUM

被引：90

作者：

ABRAMOV, E

RIEHM, MP

THOMPSON, DA

SMELTZER, WW

机构：

[1] NUCL RES CTR NEGEV,IL-84190 BEER SHEVA,ISRAEL

[2] MCMASTER UNIV,DEPT MET & MAT SCI,HAMILTON L8S 4M1,ONTARIO,CANADA

来源：

JOURNAL OF NUCLEAR MATERIALS | 1990年 / 175卷 / 1-2期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0022-3115(90)90274-Q

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The permeation rate of deuterium through high-purity beryllium membranes was measured using the gas-driven permeation technique. The time-dependent and the steady-state deuterium flux data were analyzed and the effective diffusivities of the samples were determined. Using multilayer permeation theory the effects of surface oxide were eliminated and the diffusion coefficients of the bulk beryllium determined. The diffusion parameters obtained for the extra-grade beryllium samples (99.8%) are D0 = 6.7 x 10(-9) m2/s and E(D) = 28.4 kJ/mol. For the high-grade beryllium samples (99%) the parameters are D0 = 8.0 x 10(-9) m2/s and E(D) = 35.1 kJ/mol.

引用

页码：90 / 95

页数：6