DIFFUSION OF H IN ALPHA-NBHXDY

被引:16
作者
FUKAI, Y
KUBO, K
KAZAMA, S
机构
[1] Department of Physics, Chuo University, Tokyo
来源
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-WIESBADEN | 1979年 / 115卷 / 02期
关键词
Cooperative nature; Diffusion of H; NMR; α-NbH[!sub]x[!/sub]D[!sub]x[!/sub;
D O I
10.1524/zpch.1979.115.2.181
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The diffusion of H in ternary alloys α-NbHxDx, Dy was measured by means of a pulsedfieldgradient spin echo NMR technique in the temperature range from the phase boundary up to ca. 250 °C. Measurements were performed on foil specimens of four different total concentrations, x+y = 0.20, 0.50, 0.60, and 0.75, with several different H/D ratios. It was found that the diffusion coefficient of H decreases with decreasing H/D ratio for x+y= 0.20, 0.50, and 0.60, whereas it remains nearly the same for x+y = 0.75. We interpret these results as manifestation of the cooperative nature of the diffusion process that arises from the dynamical interaction between diffusing hydrogen atoms. © 1979, Akademische Verlagsgesellschaft, Wiesbaden
引用
收藏
页码:181 / 186
页数:6
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