Phase transformation rate in hydrogen absorption of magnesium-based materials
来源期刊：中国有色金属学报(英文版)2003年第z1期
论文作者：ZHANG Wen-cong(张文从) FANG Wen-bin(房文斌) YU Zhen-xing(于振兴) ZHAO Guo-liang(赵国亮) WANG Er-de(王尔德) SUN Zhi-jie(孙志杰)<
文章页码：54 - 58
Key words：mechanical alloying; hydrogen storage material;phase transformation rate
Abstract: The hydrogen storage material Mg-Ni-MnO2 was prepared by mechanical alloying under the hydrogen atmosphere and its phase transformation rate in hydrogen absorption was studied using the self-designed measurement apparatus. The experimental results show that the phase transformation rate has a maximum value in the hydrogen absorption; and the milling time has great effect on the time of maximum value appearance and maximum value of phase transformation rate. At the early stage, the rate is controlled by particle surface effect, and at the smooth stage, the mechanism of phase transformation is influenced by the particle size.
ZHANG Wen-cong(张文从)1, FANG Wen-bin(房文斌)1, YU Zhen-xing(于振兴)2, ZHAO Guo-liang(赵国亮)1, WANG Er-de(王尔德)1, SUN Zhi-jie(孙志杰)<
(1. Department of Materials Science and Engineering,
Harbin Institute of Technology, Harbin 150001, China;
2. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China)
Abstract:The hydrogen storage material Mg-Ni-MnO2 was prepared by mechanical alloying under the hydrogen atmosphere and its phase transformation rate in hydrogen absorption was studied using the self-designed measurement apparatus. The experimental results show that the phase transformation rate has a maximum value in the hydrogen absorption; and the milling time has great effect on the time of maximum value appearance and maximum value of phase transformation rate. At the early stage, the rate is controlled by particle surface effect, and at the smooth stage, the mechanism of phase transformation is influenced by the particle size.
Key words:mechanical alloying; hydrogen storage material;phase transformation rate
