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reduce the plating temperature by 10~20 ℃, shrink the metal crystal size and improve the film densification compared to those by traditional electroless plating. A thin palladium film with 5 μm... earths in palladium film preparation. Key words:electroless plating; palladium; hydrogen separation; rare earths; [全文内容正在添加中] ......
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INFLUENCE OF ALLOYING ELEMENTS ON HYDROGEN DIFFUSION USING SCM-DV-Xα D.M.Xing1,Y.Huang2 (1.School of Physics, Tianjin Normal University, Tianjin 300071, China;2.School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China) Abstract:The influence of alloy composition (Ti, Mn, TiN) on hydrogen diffusion in Fe was studied in detail using SCM-DV-Xα method. The voltage......
]. However, most of the studies were aimed to prepare catalytic membrane reactors [4, 5], since palladium film is permeable for hydrogen and catalytically active to many hydrogen-involved reactions... of brush plated Pd film: (a) Palladium film; (b) Micro-cracks on film surface; (c) Crystal of palladium film Fig. 3 Optical microscope photograph before (a) and after (b) brush plating The adhesive......
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......
, LATTA E E. Adsorption of hydrogen on palladium single crystal surfaces [J]. Surface Science, 1974, 4: 435-436. ALDAG A W, SCHMIDT L D. Flash desorption studies of hydrogen from palladium wires [J... respectively, both of them are four fold hollow sites. Key words: surface adsorption; palladium; hydrogen; embedded-atom-method 1 Introduction It is well known that palladium has a special tendency to adsorb......
Study on Diffusion of Hydrogen in AB5 Non-Stoichiometric Hydrogen Absorbing Alloys 彭文杰1,王志兴1,陈启元1,李新海1,郭华军1 (1.Department of Metallurgical Physico-Chemistry, School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) Abstract:The diffusion coefficient of hydrogen atoms in the studied alloys was electroche mically measured by chronoamperometry when......
of 8-12 nm. Meanwhile, some crystal defects, such as dislocation, grain boundary and twin can be clearly observed in the as-milled alloys. 3.2 Gaseous hydrogen absorption/desorption thermodynamics... boundaries occur (see Fig. 4), which can provide numerous sites with low diffusion activation energy, thus facilitating the diffusion of hydrogen atoms in alloys [23]. Here, it is noteworthy......
. The diffusion activation energies of interstitial helium atom at these two Pd grain boundaries were also evaluated. Key words: helium atoms; diffusion; grain boundary; palladium; molecular dynamics 1... in nickel with MD method. In the present work, due to the especial closed-shell electronic configuration of palladium, we studied the helium diffusion behaviors at two GBs, one is Σ5<001>{210} θ=53.1......