锆钒铁合金的吸放氢性能及相结构研究  

Study on Phase Structure and Hydrogen Absorption/Desorption Performance of ZrVFe Alloy

作　　者：余远方[1] 叶一鸣[1] 李祥波 康艺[1] 胡石林[1] YU Yuan-fang;YE Yi-ming;LI Xiang-bo;KANG Yi;HU Shi-lin(Engineering Department of Special Material,China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院特种材料工程部,北京102413

出　　处：《稀有金属与硬质合金》2018年第3期49-53,62,共6页Rare Metals and Cemented Carbides

摘　　要：研究了活化温度和活化保温时间对ZrVFe合金吸放氢性能的影响,并采用XRD分析ZrVFe合金吸放氢反应前后的相结构变化。测定了ZrVFe合金吸放氢过程的P-C-T曲线,采用范德霍夫方程计算出合金吸、放氢的标准焓ΔH~Θ和标准熵ΔS~Θ,并由此外推出该合金在室温下的吸氢平衡压在10^(-8)Pa左右,放氢平衡压在10^(-10)Pa左右。此外,ZrVFe合金还有良好的抗粉化性能和抗空气毒化性能。The influences of activation temperature and activation duration of heat preservation on the hy- drogen absorption/desorption performance of ZrVFe alloy were investigated. The transformation of phase structure of ZrVFe alloy before and after hydrogen absorption/desorption was analyzed by XRD. Pressure- composition- temperature （P- C- T） plots of ZrVFe alloy during hydrogen absorption/desorption were drawn. And standard enthalpyΔSΘ, and standard entropy AHe of hydrogen absorption/desorption reaction of the alloy were calculated using Van＇t Hoff equation. The extrapolated equilibrium hydrogen pressure of hydrogen absorption/desorption can reach the levels of 10^-8 Pa and 10^-10 Pa at room temperature,respec- tively. Furthermore,ZrVFe alloy has excellent air poisoning resistance and pulverizing resistance.

关 键 词：ZrVFe 活化 吸放氢 相结构 P-C-T曲线 标准焓 标准熵 氢平衡压 

分 类 号：TG139.7[一般工业技术—材料科学与工程]