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; potentiodynamic polarization; leaching behavior; corroded products 1 Introduction Nowadays, to develop lead-free solders to replace lead-bearing solders, many progresses have been achieved in Sn-Ag, Sn-Zn... by potentiodynamic polarization and leaching test. In particular, the microstructure and composition of corroded products during each polarization were examined to understand the corrosion procedure......
Corrosion behavior and corrosion products of a low-alloy weathering steel in Qingdao and WanningShu-tao Wang,Shan-wu Yang,Ke-wei Gao,and Xin-lai He School of Materials Science and Engineering... in the north,Wanning in the south) in China for one year. The samples in Wanning corroded far more seriously than those in Qingdao. The rust layer formed on the steel was analyzed by X-ray diffraction......
the alloy and left in the corrosion products. And this also indicated that the Mg24Y5 phase was too stable to be corroded in the NaCl solution. This phenomenon could be in accordance... corrosion for Mg-0.25Y and pitting corrosion for Mg-8Y and Mg-15Y, respectively. The main solid corrosion products were Mg(OH)2 and Mg2(OH)3C1·4H2O. Key words: Mg-Y alloy; polarization curves; pitting......
Similar extrusion and mapping optimization of die cavity modeling for special-shaped products QI Hong-yuan(齐红元), WANG Shuang-xin(王爽心), ZHU Heng-jun(朱衡君) School of Mechanical and Electric Control... die for special-shaped products, with the help of Conformal Mapping theory, Conformal Mapping function is determined by the given method of numerical trigonometric interpolation. Three-dimensional......
, sulfate ions content and corroded products analysis, macro/microscopic test were carried out. Results show that under the tunnel concrete lining structure and its served environmental conditions, sulfate... action. However, under a certain environment, the formations of corroded products of concrete attacked by sulfate are different [15]. In this work, the underlying deterioration mechanisms of tunnel......
of AA2024 could occur when the relative humidity (RH) was lower than 30%. A main crystalline component of corrosion products, layered double hydroxides (LDH), [Mg1-xAlx(OH)2]x+·mH2O (LDH-Cl... as a reactant. Key words: aluminum alloy 2024; atmospheric corrosion; magnesium chloride; relative humidity; corrosion products 1 Introduction Aluminum and its alloys have been extensively used......
Development of Advanced Cement-Based Building Products Stanley N.C.CHIU1,Zongjin LI1,Bin MU1 (1.Dept. of Civil Engineering, The Hong Kong University of Science and Technology,Clear Water Bay, KLN, HONGKONG) 摘要: In this study, short fiber-reinforced cement-based building products of sheets, pipes and honeycomb panels incorporating various mineral admixtures such as slag, silica fume......
Henkel Technologies and Products for China Aerospace Alex Wong1,Michael Cichon1,Raymond Wong1,Stan Lehmann1,Helen Wei Li1 (1.Henkel Corporation, Bay Point, California 94565, U. S. A.) 摘要:Epoxy structural adhesives and composites have been in use for many years for the construction of aerospace vehicles. Henkel provides many epoxy products. Many other resin systems have been evaluated......
Fine Extruding Deformation and Modeling Optimization of Die Cavityin Special-Shaped Products Zhu Hengjun1,Qi Hongyuan1 (1.School of Mechanical and Electric Control Engineering, Beijing Jiaotong...-dimension deforming, surface function of die cavity, and mapping function between the plastic flow model and the axis-symmetry model were set up respectively for fine extruding special-shaped products......
Organic Additive Implantation onto Cement Hydration Products朱吉鹏1,李宗津1,YANG Ruochong2,ZHANG Yamei31. Department of Civil Engineering, The Hong Kong University of Science & Technology2. School of Transportation,Southeast University3. School of Materials Science and Engineering, Southeast University摘 要:In polymer modified cementitious materials, it is hard......
