DETERMINATION OF THE DIFFUSION COEFFICIENT OF HYDROGEN IN METALS FROM THE RATE OF CHANGE IN THE ELECTRICAL RESISTANCE IN DESORPTION.

被引:0
作者
Mikitishin, S.I. [1 ]
Fedorov, V.V. [1 ]
Sergienko, O.M. [1 ]
Sokolovskii, O.R. [1 ]
Spas, Ya.M. [1 ]
机构
[1] Acad of Sciences of the Ukrainian, SSR, G. V. Karpenko, Physicomechanical Inst, Lvov, USSR, Acad of Sciences of the Ukrainian SSR, G. V. Karpenko Physicomechanical Inst, Lvov, USSR
来源
Soviet materials science | 1985年 / 21卷 / 01期
关键词
DESORPTION - Measurements - ELECTRIC MEASUREMENTS - Resistance - METALS AND ALLOYS - Gases - NICKEL AND ALLOYS - Gases - TANTALUM AND ALLOYS - Gases;
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摘要
With the traditional methods of determination of the diffusion coefficient of hydrogen D, such as from the kinetics of penetration of it through metal membrane, it is impossible to investigate hydride-forming materials. In addition, the measurements are limited in temperature range. The proposed method of measurement of this parameter from the rate of change in electrical resistance in degassing of hydrogen-impregnated specimens has none of the above disadvantages, is distinguished by simplicity, and makes it possible to determine the coefficient D with any method of hydrogen impregnation in a broad temperature range. The proposed method of determination of the coefficient D was verified by measurement of the electrical resistance of hydrogen-impregnated specimens of nickel and tantalum.
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页码:22 / 25
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