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. The corrosion protection of the coatings was studied by electrochemical measurements such as electrochemical impedance spectroscopy, potentiodynamic polarization curves, and the structure of the films were... (Zn3(PO4)2·xH2O). Key words: AZ31 magnesium alloy; phosphating; corrosion; electrochemical impedance spectroscopy; potentiodynamic polarization 1 Introduction Magnesium alloys are relatively light......
oxides distribute on the surface of silver. At the same potential for the potentiodynamic polarization curves of silver, the anodic current density of silver increases with NaOH concentration increasing... transport, which is essential for further corrosion of silver in NaOH solution, through the corrosion products. Key words: silver; NaOH solution; cyclic voltammetry; potentiodynamic polarization......
of another high strength alloy AA2219. The general corrosion resistance of these alloys was examined using immersion corrosion and potentiodynamic polarization tests, while the stress corrosion cracking... the alloys. Key words: Al-Cu-Li alloy; stress corrosion cracking; fractography; potentiodynamic polarization 1 Introduction The Al-Cu-Li alloy AA2195 is used in the aerospace industry due to its light......
film formed on copper surface was investigated preliminarily by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). It is found that a slight peak measured at 0 V vs SCE... of the film thickness. Electrochemical measurement results reveal that 10 min is an optimum polymer-plated time to obtain high quality film. The results of potentiodynamic polarization show that current......
specimens being immersed in 3.5 wt% sodium chloride solution for 1 h, potentiodynamic polarization measurement shall be conducted from –1.3 V (vs SCE) to –0.4 V (vs SCE) with a scanning rate of 5 mV/s... J. Cent. South Univ. (2018) 25: 2299-2308 DOI: https://doi.org/10.1007/s11771-018-3914-5 Effects of cathodic polarization on SCC behavior of AA7003 under various aging treatments QI Xing(祁星)1, 2, 3......
J. Cent. South Univ. Technol. (2008) 15: 757-762 DOI: 10.1007/s11771-008-0140-6 Fabrication and anodic polarization behavior of lead-based porous anodes in zinc electrowinning ZHONG Shui-ping(衷水平...; Abstract: A new type of lead-based porous anode in zinc electrowinning was prepared by negative pressure infiltration. The anodic polarization potential and corrosion rate were studied and compared......
X80管线钢在NaHCO3溶液中的阳极电化学行为周建龙1,李晓刚1,杜翠薇1,李云玲1,李涛1,潘莹2(1.北京市北京科技大学腐蚀与防护中心2.武汉材料保护研究所)摘 要:采用动电位极化曲线,动电位电化学阻抗谱(DEIS)和SEM研究了X80管线钢在NaHCO3溶液中的阳极电化学行为,结果表明:随着HCO3-浓度增加,X80管线钢腐蚀速率呈现先增加,后减小的趋势,X80管线钢"钝化"的临界HCO3-浓度为0.009 mol/L.随着HCO3-浓度增加,极化曲线阳极电流峰发生变化,当HCO3-浓度低于0.009 ......
corrosion film formed on alloy in F condition. The potentiodynamic polarization curves show that the overpotential of cathodic hydrogen evolution reaction on NK30-F is much higher than that on NK30-T4... a more protective role than that of NK30-T4 and NK30-T6. Key words: Mg-Nd-Zr alloy; corrosion behaviour; heat treatment; potentiodynamic polarization; electrochemical impedance spectroscopy ......
was examined in the very aggressive solution of 50% H2SO4 (mass fraction) using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements. The results show that magnesium...; zinc-magnesium alloys; potentiodynamic polarization; electrochemical impedance spectroscopy......
电弧离子镀CrN涂层盐雾腐蚀行为万先松1,师玉英2,马军1,李海庆2,宫骏2,孙超2(1.辽宁省沈阳市科学院金属研究所金属腐蚀与防护国家重点实验室2.中航工业哈尔滨东安发动机(集团)有限公司)摘 要:采用电弧离子镀技术在38CrA调制钢上制备CrN涂层,分析了涂层的组织及结构,研究了工艺参数对CrN涂层中性盐雾腐蚀性能的影响.结果表明:3组不同工艺的CrN涂层均由fcc-CrN,hcp-Cr2N以及bcc-Cr相组成;在N2压强较低时,CrN相表现为{100}择优取向,N2压强较高时,则表现为{110}择优取向......
