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system, kinetics has been further studied in this work. It is confirmed that the product is TbFe2 by means of XRD. The contracting core model is applied. The reactions are found to be diffusion controlled. The apparent activation energy of TbFe2 is 39 kJ*mol-1. Key words:inorganic chemistry; Ca-Tb4O7-Fe system; TbFe2; contracting core model; rare earths; [全文内容正在添加中] ......
Chemical Compositions,Microstructure and Mechanical Properties of Roll Core used Ductile Iron in Centrifugal Casting Composite RollsYunlong Bai,Yikun Luan, Nannan Song, Xiuhong Kang , Dianzhong Li...">The industrial manufacture processes of three kinds of roll core used ductile irons have been investigated via systematical experiments. Effects of the ratio of C/Si, pig iron, nodularizer and alloying method......
:应力释放;岩芯直径;地应力;松科2井 中图分类号:TD311; P553 文献标志码:A 开放科学(资源服务)标识码(OSID) 文章编号:1672-7207(2019)12-3106-08 A method of diametrical core deformation analysis and its... principle of diametrical core deformation analysis method(DCDA) in-situ stress testing method, core diameter testing instrument and testing process based on laser rangefinder were introduced......
Analysis of Aging Mechanism of SBS Polymer Modified Asphalt based on Fourier Transform Infrared Spectrum赵永利School of Transportation,Southeast University摘 要:The aging mechanism of SBS modified asphalt during its aging process was studied.The characterizations of base asphalt,SBS polymer and its modified asphalt were determined in different aging time......
Structural,Dielectric,and Magnetic Studies on Electrospun Magnesium Ferrite-Polyvinylidene Fluoride Core–Shell Composite FibersS.Dinesh Kumar2,P.Chithra Lekha2,V.Subramanian2,T...-micron(of the order of 150 nm) thick core–shell composite fibers of magnesium ferrite-polyvinylidene fluoride are prepared by electrospinning.The loading of magnesium ferrite is varied from 1 to 10 wt......
A novel polymer critical re-melting treatment for improving corrosion resistance of magnesium alloy stentShanshan Chen1,Peng Wan2,Bingchun Zhang1,Deniz Eren Eri?en1,3,Hui Yang1,Ke Yang11. Institute...="ChDivSummary">Polymer coating was widely used as a protective coating on Mg alloy stent due to its excellent deformability. However, the polymer coating with lots of macro-and micro-holes after solvent......
at molecular scale with self-assembly monolayers are shown: ( 1 ) Chemically attaching ultra-thin polymer films through the self-assembly of silane fictionalized copolymer have been approved in this article. (2) The patterned films with microstructures on different substrates have been prepared through micro-contact printing technique and electro polymerization. 关键词:self- assembly; polymer film......
Influences of Polypropylene Fiber and SBR Polymer Latex on Abrasion Resistance of Cement Mortar徐方Key Laboratory of Silicate Material Science and Engineering of Ministry of Education, Wuhan University of Technology摘 要:Influences of polypropylene (PP) fiber and styrene-butadiene rubber (SBR) polymer latex on the strength performance, abrasion resistance......
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Highly efficient anode catalyst with a Ni@Pd Pt core–shell nanostructure for methanol electrooxidation in alkaline mediaPei-shu Yu1,Chun-tao Liu1,2,Bo Feng1,Jia-feng Wan1,Li Li1,Chun-yu Du31. School...), transmission electron microscopy(TEM), and high-resolution TEM(HRTEM) techniques. The experimental results indicate that the average particle size of the core–shell-structured Ni@Pd Pt......