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resistance of the coating was evaluated by open circuit potential and potentiodynamic polarization curves in 3.5% (mass fraction) NaCl solution. The results show that plating deposition is initiated... that the nickel plating-coating is compact without pores and good adhesion. Potentiodynamic polarization curves, measured in 3.5% NaCl solution, are presented in Fig.6. The curves Fig.4 Nucleation......
Steady polarization process modelling of noble metal-electrolyte cermet composite electrode LUO Zhi-an(罗志安), XIAO Jian-zhong(肖建中), XIA Feng(夏 风), YANG Yi-fan(杨一凡) State Key Lab of Plastic Forming... for electrochemical sensor and solid oxide fuel cell(SOFC). A steady polarization model was developed. The model was based on electronic and ionic transfer process together with the electrochemical reaction......
with purification treatment exhibit excellent corrosion resistance. The potentiodynamic polarization curves of Mg-Gd-Y-Zr alloy are shown in Fig.6. The polarization curves reveal that the impact of inclusion...) in the salt spray test. The corrosion potential increases while the corrosion current decreases and the polarization resistance increases in the electrochemical tests, which indicates......
potentiodynamic polarization were observed and analyzed by scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and micro-zone X-ray diffractometer, respectively. The result shows... annealed at 650 and 750 ℃ 图10 非晶样及其退火试样在3.5% NaCl溶液中极化后的表面形貌 Fig. 10 SEM images of different samples after potentiodynamic polarization in 3.5% NaCl solution: 750 ℃ 表3 在3.5%的NaCl......
CREVICE CORROSION BEHAVIOR OF X70 STEEL IN HCO3- SOLUTION UNDER CATHODIC POLARIZATION H.Guo1,C.W.Du1,X.G.Li1,P.Liang1,X.Chen1 (1.School of Materials Science and Engineering,University of Science... with a wedge-shaped crevice assembly under-1000 mV (SCE) cathodic polarization in the solutions with various HCO3- concentrations.The potential,current,pH and the oxygen content within the crevice were......
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polarization curves, cyclic voltammetry curves and Tafel polarization curves for the composite inert anodes obtained under different PANI concentrations in the original plating bath were measured... and 166 mV, respectively, under 500 A/m2 and 1000 A/m2. Key words: composite inert anodes; double pulse electrodeposition; anodic polarization curves; cyclic voltammetry curves; Tafel polarization curves......
studied by potentiodynamic polarization, corrosion potential (φcorr) and electrochemical impedance spectroscopy techniques (EIS). The impedance data were fitted to appropriate equivalent circuits..., such as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS), have been shown in corrosion research to be efficient and convincing tools for analyzing the corrosion behavior......
Corrosion of Zinc Ferrite Based Inert Anodes in AlF3-NaF-Al2O3 Melts Under Conditions of Anodic Polarization Dong Yunhui1,Zhao Zengdian1,Zhang Lipeng1,Yu Xianjin1 (1.School of Chemical Engineering... to AlF3-NaF-Al2O3 melts under the conditions of anodic polarization; (2) High anodic current density(＞1.5 A·cm-2), high alumina concentration and low ratio of NaF/AlF3 in the molten salts will be the most......
with the explanation in Fig. 7. 3.5 Electrochemical results 3.5.1 Polarization curves The potentiodynamic polarization curves of Mg-Y alloys are shown in Fig. 9. From Fig. 9, the corrosion potential shifted... 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......
