中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 26 No. 1 January 2016 |
（1. College of Materials and Metallurgy, Guizhou University, Guiyang 550003, China;
2. School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550001, China）
Abstract:TheMg-Ni hydride was prepared by hydriding combustion synthesis under a high magnetic field. The dehydriding kinetics of the hydrides was measured under the isothermal and non-isothermal conditions. A model was applied to analyzing the kineticsbehavior of Mg-Ni hydride. The calculation results show that the theoretical value and the experimental data can reach a good agreement, especially in the case of non-isothermal dehydriding. The rate-controlling step is the diffusion of hydrogen atoms in the solid solution. The sample prepared under magnetic field of 6 T under the isothermal condition can reach the best performance. The similar tendency was observed under the non-isothermalcondition and the reason was discussed.
Key words: Mg-Ni hydride; hydrogen desorption kinetics; model; isothermal condition; non-isothermal condition
