| 磁性蓄冷材料Er_3Ni的吸氢量研究 |
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| 引用本文： | 金滔,许斌,李聪航,汤珂,陈立新,陈国邦.磁性蓄冷材料Er_3Ni的吸氢量研究[J].工程热物理学报,2011(1):6-8. |
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| 作者姓名： | 金滔 许斌 李聪航 汤珂 陈立新 陈国邦 |
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| 作者单位： | 浙江大学制冷与低温研究所;浙江大学金属材料研究所; |
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| 基金项目： | 国家自然科学基金资助项目(No.50776075) |
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| 摘 要： | 磁性蓄冷材料Er3Ni在液氦温区的回热式低温制冷机中已经被广泛应用,在以He-H2混合气体为工质的脉管制冷实验中发现Er3Ni与H2会发生反应,其产物在一定程度上提高了制冷机的性能,本文基于金属储氢过程的理论框架,分析了Er3Ni吸氢的机理,并推算了Er3Ni的理论吸氢量.对Er3Ni在室温条件下的吸氢量进行了实验测量...
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| 关 键 词： | Er_3Ni 吸氢机理 吸氢量 活化 |
STUDY ON THE HYDROGEN ABSORPTION CAPACITY OF MAGNETIC REGENERATIVE MATERIAL Er_3Ni |
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| JIN Tao XU Bin LI Cong-Hang TANG Ke CHEN Li-Xin CHEN Guo-Bang.STUDY ON THE HYDROGEN ABSORPTION CAPACITY OF MAGNETIC REGENERATIVE MATERIAL Er_3Ni[J].Journal of Engineering Thermophysics,2011(1):6-8. |
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| Authors: | JIN Tao XU Bin LI Cong-Hang TANG Ke CHEN Li-Xin CHEN Guo-Bang |
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| Institution: | JIN Tao~1 XU Bin~1 LI Cong-Hang~1 TANG Ke~1 CHEN Li-Xin~2 CHEN Guo-Bang~1 (1.Institute of Refrigeration and Cryogenics,Zhejiang University,Hangzhou 310027,China,2.Department of Material Science and Engineering,China) |
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| Abstract: | Magnetic material Er_3Ni is one of the common regenerative materials used in 4 K cryocoolers.The experiments on a pulse tube cryocooler with He-H_2 mixtures as working fluid and Er_3Ni as regenerative material demonstrated a significant improvement in refrigeration performance than the thermodynamic analytical results,which was attributed to the hydride Er_3NiH_x from Er_3Ni-H_2 reaction.The hydrogenation mechanism of Er_3Ni is analyzed,and the theoretical hydrogen absorption capability is also predicted.Th... |
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| Keywords: | Er_3Ni hydrogenation mechanism hydrogen absorption capacity activation |
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