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hydrogenation-dehydrogenation for the preparation of titanium powder, was studied. The titanium hydride was prepared through the reaction between electrolyzed titanium and hydrogen at different hydrogenation temperatures and different time. The evolutions of hydrogen and oxygen contents, density, hardness and phase composition before and after hydrogenation were characterized under different......
Hydrogen diffusion in Zr35Ni55V10 amorphous alloy CHENG Xiao-ying(程晓英), WAHG Fang(王 芳) Institute of Materials Science, Shanghai University, Shanghai 200072, China Received 20 October 2006...; Abstract: Hydrogen diffusion in Zr35Ni55V10 amorphous alloy was measured by chronopotentiometry. The results show that at lower molar ratio of hydrogen (x＜0.06, x=n(H)/n(M)), the diffusivity......
Impurity distribution in metallic dysprosium during distillation purification张小伟1,苗睿瑛1,李传军2,吴道高1,闫缓1,王志强1,陈德宏1,颜世宏1,李宗安11. National Engineering Research Center for Rare Earth Materials,General... front could be used to describe the impurity distribution near evaporating surface.In the former stage of distillation purification,the diffusion of impurity in liquid metal could reach a quasi......
Impurity distribution in metallic dysprosium during distillation purification张小伟1,苗睿瑛1,李传军2,吴道高1,闫缓1,王志强1,陈德宏1,颜世宏1,李宗安11. National Engineering Research Center for Rare Earth Materials,General... front could be used to describe the impurity distribution near evaporating surface.In the former stage of distillation purification,the diffusion of impurity in liquid metal could reach a quasi......
Hydrogen Absorption and Release Behavior in Hydrogen Decrepitation Process of Nd-Fe-B Alloys 陈晓东1,杨昌平1,陈秀云1,石大立1,朱静1,姜忠良1 (1.School of Materials Science & Engineering, Tsinghua University, Beijing 100084, China) Abstract:The behavior of hydrogen absorption and release in hydrogen decrepitation (HD) process of Nd-Fe-B alloys were investigated. The results reveal that the reactivity......
Hydrogen absorption and desorption in metallic glass and nanocrystalline Zr52.5Cu17.9Ni14.6Ti5Al10 alloy CHENG Xiao-ying(程晓英), WANG Fang(王 芳) Institute of Materials Science, Shanghai...; Abstract: To illuminate the intrinsic surface activity of Zr52.5Cu17.9Ni14.6Ti5Al10 alloy in its glass and nanocrystalline states, hydrogen......
PURIFICATION OF KAOLINS BY SELECTIVE DISPERSION AND FLOCCULATION龚文琪,袁继祖摘 要:<正>To fulfill the increasingly higher requirements on thequality of kaolins from industries, the purification of kaolins has becomemore and more important. Kaolins from different mines were studied withthe aim to remove the various impurities. The mineralogical studies......
DEGRADATION BEHAVIORS OF NEW TYPE TiV-BASED HYDROGEN STORAGE ELECTRODE ALLOYS X.Z. Sun1,M.X. Gao1,Y.F. Zhu1,R. Li1,H.G. Pan1,Y. Lin1 (1.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China) Abstract:The degradation behaviors of the TiV-based multiphase hydrogen storage alloy Ti0.8Zr0.2V3.2Mn0.64-Cr0.96Ni1.2 during electrochemical cycling in alkaline......
; Parameter value used for computation 表2 镁熔液-氢气泡的单因素水平 Table 2 Single factors and levels of magnesium melt- hydrogen gas bubble 表2中编号1所设置的工艺参数值为初始条件.编号1,2,3组成镁熔液温度变化对镁熔液氢气泡析出影响的分析组A；编号1,4,5组成初始高...0.2~0.25 s之间；温度相对越高,气体越活跃,同一时刻,气泡的运动速度也相对较大；同样,气泡半径的变化量也相对较大. 图1 不同镁熔液温度对氢气泡析出变化的影响 Fig. 1 Effect of different magnesium melt temperatures on hydrogen gas bubble evolution 3.2 不同初始高度......
J. Cent. South Univ. (2016) 23: 2214-2222 DOI: 10.1007/s11771-016-3279-6 Germanium separation and purification by leaching and precipitation Saeid Bayat, Sajjad Aghazadeh, Mohammad Noaparast, Mahdi...: In this research work, extraction and purification of germanium from zinc leach residues (ZLR) were investigated. The results of ICP, XRF, and atomic adsorption spectroscopy (AAS) tests show that contents......
