Effect of Preparation Methods on Hydriding Properties of La1.5Mg17 Ni0.5 Composite Materials
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第2期
论文作者：Zhan Feng Chou Kouchih XIAO Fang LEI Tingquan Li Qian JIANG Lijun Lin Qin
Key words：hydriding combustion synthesis; mechanical alloying; hydrogen storage material; hydriding property;
Abstract: La1.5Mg17Ni0.5 hydrogen storage materials were prepared by hydriding combustion synthesis (HCS) and mechanical alloying (MA) method respectively. The experimental results show that the hydrogen absorption properties of La1.5Mg17Nio.5 prepared by MA are better than that by HCS. La1.5Mg17Nio.5 prepared by MA can absorb 6.73 mass% hydrogen at 523 K within 1 min, and 4.92 mass% hydrogen at 423 K. The improvement of hydriding properties of La1.5Mg17Ni0.5alloy prepared by MA can be ascribed to the formation of nano-crystalline and defects during the mechanical alloying.
Zhan Feng1，Chou Kouchih2，XIAO Fang1，LEI Tingquan3，Li Qian2，JIANG Lijun1，Lin Qin2
(1.General Research Institute for Non-Ferrous Metal,Beijing 100088,China;
2.Department of Physical Chemistry,University of Science and Technology Beijing,Beijing 100083,China;
3.Department of Material Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)
Abstract:La1.5Mg17Ni0.5 hydrogen storage materials were prepared by hydriding combustion synthesis (HCS) and mechanical alloying (MA) method respectively. The experimental results show that the hydrogen absorption properties of La1.5Mg17Nio.5 prepared by MA are better than that by HCS. La1.5Mg17Nio.5 prepared by MA can absorb 6.73 mass% hydrogen at 523 K within 1 min, and 4.92 mass% hydrogen at 423 K. The improvement of hydriding properties of La1.5Mg17Ni0.5alloy prepared by MA can be ascribed to the formation of nano-crystalline and defects during the mechanical alloying.
Key words:hydriding combustion synthesis; mechanical alloying; hydrogen storage material; hydriding property;
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