발간논문

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Vol.15, No.2, 210 ~ 211, 1977
Title
손동성 , 이재영
Abstract
Kinetics of the reaction of hydrogen with Zr-Ni alloys have been studied in the temperature range of 900℃-1080℃ at 400 and 600 torr. hydrogen pressure using thermogravimetric method. It is found that the rate controlling step of all reactions is hydrogen diffusion in metals. The diffusion coefficients of hydrogen in Zr-Ni alloys (0.5 a/o 1.09a/o, 1.5 a/o, 2.3 a/o Ni-Zr) are D=0.2902 exp [－(9859±849)/RT] ㎠/sec. :0.5 a/o Ni-Zr D=1.786 exp [－(12010±907)/RT] ㎠/sec. :1.09 a/o Ni-Zr D=6.403 exp [－(13550±587)/RT] ㎠/sec. :1.5 a/o Ni-Zr D=164.0 exp [－(15910±2740)/RT] ㎠/sec. :2.3 a/o Ni-Zr respectively. Nickel increases markedly the activation energy of hydrogen diffusion in Zr-Ni alloys. It can be probably explained by that Ni decreases the interstitial sites of Zr lattice.
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