부산대학교 도서관

Comparative studies of the diffusion and accumulation of hydrogen in the Zr-1 wt.% Nb alloy in the fine-grained and ultrafine-grained states during electrolytic saturation were carried out by the membrane method. The formation of an ultrafine-grained structure is established to lead to a decrease in the effective diffusion coefficient and the rate of hydrogen accumulation in the bulk of the alloy. The influence of the dislocation density and the length of grain boundaries on the effective diffusion coefficient of hydrogen and the ability of the alloy to accumulate hydrogen in the bulk are considered. Keywords: zirconium alloy, ultrafine-grained structure, diffusion, hydrogen, membrane method. UDC 539.219.3:546.11:546.831
INTRODUCTION The presence of interstitial impurities in metals has a significant effect on their operational characteristics. In hydride-forming metals, hydrogen occupies a special place among interstitial impurities in terms of [...]