Search results

Study on Surface Modification of Aluminum Alloys by Silicate-based Hybrid Coating WANG Jiayu, LI Cheng 1 College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China 1Corresponding author.
Introduction The sol-gel technology for metallic surface pretreatment is one of the relatively generic approaches in surface engineering and corrosion protection, as it can avoid the use of Cr(VI)-containing primer, which is environmental harmful.
It is considered that the aluminum element existing in the silica-based hybrid coatings plays a key role as network adjustor in improving the structure of the coating, thus modifies the compatibility between the substrate and the coating.

.% NaCl solution Fanqing Ran1, a, Ziyong Chen1, b*, Lihua Chai1, c 1College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China arfq@emails.bjut.edu.cn, bczy@bjut.edu.cn, clhchai@bjut.edu.cn Keywords: Al-Zn-Mg-Cu alloy; Ageing treatment; Intermetallics particles; Trenching; Pitting Corrosion Abstract.
Acknowledgements The authors wish to acknowledge the financial support of National Basic Research Program of China (no. 2A009011201201) and Key Project of Beijing Municipal Education Commission (no.

Al-Turaif Chemical and Materials Engineering Dept., King Abdulaziz University, Jeddah, Saudi Arabia *corresponding author: Elshazly_a@yahoo.com Abstract The aim of the present work is to use intrinsically conducting polymers (ICPs) to improve the corrosion resistance ability of the galvanic coupling of galvanized steel coupled with steel by coating it with polypyrrole (PPy).
Key words Corrosion resistance, polypyrrole, galvanic corrosion, electropolymerization, conducting polymers Introduction Steel galvanization is a sacrificial protection method for steel against corrosion where, a layer of zinc is applied on the surface of steel either electrochemically or by hot dipping of steel in molten zinc.

Machida Department of Mechanical Engineering, Tokyo University of Science 2641 Yamazaki, Noda-shi, Chiba, Japan, 278-8510 E-mail: mac@rs.noda.tus.ac.jp Keywords: Digital image correlation, Hybrid method, Elastic-plastic FEM, J integral, Singular stress field Abstract.
The material used for FEM is A2017-T3 (Aluminium alloy).
(a) Distributions of Jx value along the crack front (b) J versus displacement curve Fig.4 10 mm thick specimen δ=0.135m m δ=0.542m m δ=0.948m m δ=1.219m m δ=1.489m m 0 20 40 60 80 100 120 0.00 . 51 . 0 2Z/B Jx (kN/m ) JH Jx1 Jx2 0 20 40 60 80 100 1200.00.40.81.21.6 δ(m m ) J (kN/m ) (a) Distributions of Jx value along the crack front (b) J versus displacement curve Fig.3 6 mm thick specimen δ=0.125m m δ=0.499m m δ=0.873m m δ=1.153m m δ=1.403m m 0 20 40 60 80 100 0.00 . 51 . 0 2Z/B Jx (kN/m ) JH Jx1 Jx2 0 20 40 60 80 100 120 00.40.81.21.6 δ(mm) J (kN/m ) δ=0.124m m δ=0.495m m δ=0.866m m δ=1.144m m δ=1.391m m 0 20 40 60 80 100 0.00 . 51 . 0 2Z/B Jx (kN/m) JH Jx1 Jx2 0 20 40 60 80 100 120 00.40.81.21.6 δ(m m ) J (kN/m ) (a) Distributions of Jx value along the crack front (b) J versus displacement curve Fig.2 3 mm thick specimen Experimental Condition The material used for
Yamada, (2004), Key Eng.

Study on LOD of Chinese Honey Adulterated with HFCS by HPAEC-PAD Jinzhe He1, a, Ming Lei2, b, Peilong Sun3, c College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, P.
Materials and methods Samples Genuine honeys: acacia honey, linden honey, date honey, citrus honey; high purity of HFCS.
Grof, Application of high performance anion exchange-pulsed amperometric detection to the activity of key sucrose metabolizing enzymes in sugarcane, J.

Introduction Two key challenges in the implementation of polymer-based nanocomposites are (i) obtaining good dispersions of the nanofiller and (ii) ensuring that the accompanying increases in melt viscosity do not compromise processing.
For this reason, initial efforts to investigate hybrid nanocomposite-composite materials in our laboratory have focused on thermoplastic composites, for which processing routes are specifically designed to overcome difficulties with high matrix viscosities [4].
Månson, submitted to Engineering Fracture Mechanics (2008).

High Throughput Speciation Analysis of Mercury in Water Environment by Short Column Capillary Electrophoresis On-line Coupled with Inductively Coupled Plasma Mass Spectrometry Li Bao-Hui1, a and Tian Bao-Juan2, b 1College of Environmental Science & Engineering, North China Electric Power University 2Baoding City, 071003, China, Department of Chemistry, Baoding College, Baoding City, 071000, China abhlli@mail.nankai.edu.cn btbj2001@163.com Keywords: Speciation analysis; hybrid techniques; short column capillary electrophoresis; inductively coupled plasma mass spectrometry; mercury.
As the most toxic species of mercury found in environmental and biological materials, MeHg(I) is of particular concern to people because it can be accumulated through the food chain.
Whether the sample uptake flow rate caused by self-aspiration effect of mcromist matches the make-up solution flow rate is the key to success.

FEM Analysis of the Deformation Behavior at Thickness Direction in Laboratory Plate Hot Rolling Jiyuan Liua, Zongan Luob*, Fuxian Zhuc and Chao Tiand State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, China aneu_liujy@163.com, bluoza@neu.edu.ral.cn, czhufuxian@163.com, dsdlgtys@163.com Keywords: FEM simulation, Thickness direction, Deformation behavior, Rolling pass reduction.
Because the rolling process finished before 950℃, the yield stress was set to 80MPa approximately, the other material parameter was shown in Table.1[9].
v Fig. 1 Multi-pass rolling simulation model Table.1 Material parameters Parameter Roller Plate Density (Kg/m3) 7850 7850 Young’s modulus (GPa) 210 117 Poisson’s ratio 0.3 0.3 Yield stress (MPa) - 80 Table.2 Rolling schedule of FEM simulation 1 2 3 4 5 6 7 8 t0 (mm) 60 54 48 42 36 33 30 27 t (mm) 54 48 42 36 33 30 27 24 ε (%) 10 11 13 14 8 9 10 11 Experiment The verified experiment performed on a plate with the same shape of the simulation model.
Park, Numerical Analysis of Roll Deflection for Sendzimir Mill, Journal of Manufacturing Science and Engineering, 130 (2008) 011016

Effect of Reheating and Deformation Processes on DWTT Performance for Heavy Gauge Pipeline Steel Zhang Chuanguo1,2,a*, Zhai Qijie1,b, Zheng Lei2,c 1School of Materials Science and Engineering, Shanghai University.
The various key process parameters related to slab reheating, recrystallization zone deformation (rough rolling) and non-recrystallization zone deformation (finish rolling) were designed.

Synthesis and Photochromic Properties of 1-(Thien-3-yl)-2-(thien-2-yl)- ethene Having Bromo at 4-Position of Thiophene Moieties Shengmin Zhao1,a, Rui Zhao2,b, Xian Chen2,c, Wenguan Zhang1,d 1Beijing Key Laboratory of Printing and Packaging Materials and Technology, 2School of Printing and Packaging Engineering.