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a suitable barrier to prevent Cu diffusion in silicon crystal[1]. The refractory metals and its nitrides have been wildly studied due to their high thermochemical stability and excellent conductivity. Ta... Diffusion barrier performance of nanoscale TaNx thin-film ZHOU Ji-cheng(周继承), CHEN Hai-bo(陈海波), LI You-zhen(李幼真) School of Physics Science and Technology, Central South University, Changsha......
show that the structure of composite powders is Si3N4 coated by nano Fe. The crystal phases of sintered flakes by pressureless are Fe(Si) compound, SiC and Si3N4. The crystal phases of the sintered...; Preparation and sintering of nano Fe......
Pulsed electrodeposition of hydroxyapatite on titanium substrate in solution containing hydrogen peroxide CHEN Xing-yu(陈星宇), ZHAO Zhong-wei(赵中伟), CHEN Ai-liang(陈爱良), LI Hong-gui(李洪桂) School..., such as -1.0 V (vs SCE), and there is not many coatings on the substrate. The combination of pulse electrodeposition and addition of hydrogen peroxide can assuredly improve the physico-chemical properties......
after remelting might be reduced when a slag with low hydrogen permeability is used. Key words: electroslag remelting; hydrogen permeability; diffusion; calcium fluoride; slag 1 Introduction Hydrogen...J. Cent. South Univ. Technol. (2011) 18: 1063-1067 DOI: 10.1007/s11771-011-0804-5 Hydrogen permeability of slags containing calcium fluoride DONG Yan-wu(董艳伍)1, 2, JIANG Zhou-hua(姜周华)1, LIANG Lian......
low-Co intermetallic hydrides [J]. J Alloys Compd, 2006, 421: 258-267. [4] YUAN Xian-xia, XU Nai-xin. Determination of hydrogen diffusion coefficient in metal hydride electrode by cyclic voltammetry... alloy containing carbon nanotubes [J]. J Alloys Compd, 2003, 353: 295-300. [6] IWAKURA C, OURA T, INOUE H, MATSUOKA M, YAMAMOTO Y. Effect of alloy composition on hydrogen diffusion in the AB5-type......
of the Mg2Ni-type electrode, such as sluggish hydriding/dehydriding kinetics and low electrochemical discharge capacity at room temperature, low diffusion rate of hydrogen and easy oxidation in alkaline... on the crystal structure but also on the electro-magnetic structure. Therefore, the amount of absorbed hydrogen was larger in a crystalline phase than in an amorphous phase. LI and CHENG [19......
Engineering, College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, China) Abstract: Owing to the excellent permeability and permselectivity toward hydrogen, palladium membranes have attracted much attention in the fields of hydrogen separation and membrane catalytic reaction. Palladium membranes supported on porous substrate (i.e., composite palladium membranes) have......
J. Cent. South Univ. (2020) 27: 1074-1103 DOI: https://doi.org/10.1007/s11771-020-4352-8 Hydrogen generation from methanol reforming for fuel cell applications: A review SUN Zhao(孙朝), SUN Zhi-qiang...: Methanol is regarded as an important liquid fuel for hydrogen storage, transportation, and in-situ generation due to its convenient conveyance, high energy density, and low conversion temperature......
efficiently and providing rapid diffusion passageway for hydrogen atoms into Mg matrix. Fig.2 Dependence of hydrogen absorption amount on corresponding ball milling time 3.2 Microstructural characteristics..., and the diffusion process is not enhanced by Ti. The effect of transition metal additive on sorption properties of Mg2FeH6 is needed for further investigation. Fig.7 Hydrogen absorption curves......
, as evidenced by our previous work [22], which may promote the diffusion of hydrogen in materials by providing numerous sites with low diffusion activation energy [23]. Moreover, it has been ascertained... of Nd0 alloy which is lower than Nd10 alloy. The crystal defects of Nd0 alloy prone to merge even disappear during the hydriding-dehydriding cycle, which results in the occupied site of atomic hydrogen......