Kinetics of the reaction between Mg-23.3%Ni eutectic alloy and hydrogen

E. Akiba, K. Nomura, S. Ono, Y. Mizuno

研究成果: ジャーナルへの寄稿記事

29 引用 (Scopus)

抄録

The kinetics and the time dependence of the reaction between the Mg-23.3%Ni alloy and hydrogen and of the deactivation of the alloy are presented. The Mg-23.3%Ni alloy, which is a eutectic compound of magnesium and Mg2Ni, has the lowest melting point (507 °C) of the MgNi alloys. The rate of the reaction between the Mg-23.3%Ni alloy and hydrogen, which was measured by a constant-volume method, was expressed by the equation dn dt = k(P - Peqn where n is the hydrogen-to-magnesium ratio, P is the hydrogen pressure, Peq is the equilibrium pressure and k is the rate constant. With regard to the temperature dependence of the rate, the relation between In k and 1 T was not linear and hence the activation energy was not obtained. Prior to each run the hydrided alloy was dehydrided in a vacuum and was then pretreated by introducing a specific amount of hydrogen into the system. The reaction rate decreased with the time elapsed after pretreatment. Normal pretreatment together with full hydriding reactivated the alloy to its original level.

元の言語英語
ページ(範囲)145-150
ページ数6
ジャーナルJournal of the less-common metals
89
発行部数1
DOI
出版物ステータス出版済み - 1 1983

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Eutectics
Hydrogen
Kinetics
Magnesium
Magnesium Compounds
Reaction rates
Melting point
Rate constants
Activation energy
Vacuum

All Science Journal Classification (ASJC) codes

  • Engineering(all)

これを引用

Kinetics of the reaction between Mg-23.3%Ni eutectic alloy and hydrogen. / Akiba, E.; Nomura, K.; Ono, S.; Mizuno, Y.

:: Journal of the less-common metals, 巻 89, 番号 1, 01.1983, p. 145-150.

研究成果: ジャーナルへの寄稿記事

Akiba, E. ; Nomura, K. ; Ono, S. ; Mizuno, Y. / Kinetics of the reaction between Mg-23.3%Ni eutectic alloy and hydrogen. :: Journal of the less-common metals. 1983 ; 巻 89, 番号 1. pp. 145-150.
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N2 - The kinetics and the time dependence of the reaction between the Mg-23.3%Ni alloy and hydrogen and of the deactivation of the alloy are presented. The Mg-23.3%Ni alloy, which is a eutectic compound of magnesium and Mg2Ni, has the lowest melting point (507 °C) of the MgNi alloys. The rate of the reaction between the Mg-23.3%Ni alloy and hydrogen, which was measured by a constant-volume method, was expressed by the equation dn dt = k(P - Peqn where n is the hydrogen-to-magnesium ratio, P is the hydrogen pressure, Peq is the equilibrium pressure and k is the rate constant. With regard to the temperature dependence of the rate, the relation between In k and 1 T was not linear and hence the activation energy was not obtained. Prior to each run the hydrided alloy was dehydrided in a vacuum and was then pretreated by introducing a specific amount of hydrogen into the system. The reaction rate decreased with the time elapsed after pretreatment. Normal pretreatment together with full hydriding reactivated the alloy to its original level.

AB - The kinetics and the time dependence of the reaction between the Mg-23.3%Ni alloy and hydrogen and of the deactivation of the alloy are presented. The Mg-23.3%Ni alloy, which is a eutectic compound of magnesium and Mg2Ni, has the lowest melting point (507 °C) of the MgNi alloys. The rate of the reaction between the Mg-23.3%Ni alloy and hydrogen, which was measured by a constant-volume method, was expressed by the equation dn dt = k(P - Peqn where n is the hydrogen-to-magnesium ratio, P is the hydrogen pressure, Peq is the equilibrium pressure and k is the rate constant. With regard to the temperature dependence of the rate, the relation between In k and 1 T was not linear and hence the activation energy was not obtained. Prior to each run the hydrided alloy was dehydrided in a vacuum and was then pretreated by introducing a specific amount of hydrogen into the system. The reaction rate decreased with the time elapsed after pretreatment. Normal pretreatment together with full hydriding reactivated the alloy to its original level.

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