La_(1-x)Y_xNi_(4.8)Mn_(0.2)合金的贮氢性能研究
Hydrogen Storage Properties of La_(1-x)Y_xNi_(4.8)Mn_(0.2) Alloys
查看参考文献18篇
文摘
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研究了w(Y)变化对La_(1-x)Y_xNi_(4.8)Mn_(0.2)(x=0.2,0.5)贮氢合金的晶胞参数、热力学性能、动力学性能和平台特性,及其抗粉化性能的影响.研究结果表明,随着w(Y)的增加,吸放氢平台压力升高,平台斜率增大,滞后因子略有增加,贮氢容量减少,吸氢动力学性能略有下降,但抗粉化性能却明显提高.研究发现,X射线衍射图谱中(111)主峰半高宽值与合金的滞后因子具有相同的变化趋势. |
其他语种文摘
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The influences of Y content x on the lattice parameters, thermodynamic properties, absorption kinetics, plateau characters and pulverization resistance of La_(1-x) Y_xNi_(4.8) Mn_(0.2) (x = 0.2, 0.5) alloys are investigated. The experimental results show that with the increasing Y content, the absorption/desorption plateau pressure, the hysteresis factor and the plateau slope are enhanced, the absorption kinetics is reduced slightly and the hydrogen intake capacity is impaired while the pulverization resistance is improved obviously. It is found that the hysteresis factor has the same variation trend as full width at half maximum of (111) peak in the XRD patterns. |
来源
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西安交通大学学报
,2008,42(3):359-363 【核心库】
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关键词
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贮氢合金
;
动力学
;
抗粉化性能
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地址
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中国科学院金属研究所, 辽宁, 沈阳, 110016
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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0253-987X |
学科
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金属学与金属工艺 |
基金
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国家863计划
;
国家自然科学基金
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文献收藏号
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CSCD:3223913
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