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luster and neither selective corrosion nor pitting corrosion could be observed on their surfaces. After being immersed in 3% NaCl and 1% H2SO4 solutions for 240 h, the mass losses of Ni deposits... Effect of grain size on corrosion behavior of electrodeposited bulk nanocrystalline Ni QIN Li-yuan(秦丽元), LIAN Jian-she(连建设), JIANG Qing(蒋 青) Key Laboratory of Automobile Materials of Ministry......
time: (a) 2 h; (b) 4 h The SEM image of sample immersed for 4 h is shown in Fig.2(b). The pitting corrosion is expanded to the general corrosion due to the poor corrosion resistance of Mg7Zn3 matrix... by pitting corrosion or comprehensive corrosion[15]. In corrosive solution, the different potentials of phases lead to many micro galvanic cells, whose susceptibility is dominated by a(Mg) phase......
.ijggc.2016.06.002. [6] XIANG Yong, LI Chen, HESITAO W, LONG Zheng-wei, YAN Wei. Understanding the pitting corrosion mechanism of pipeline steel in an impure supercritical CO2 environment [J]. Journal..., BARKER R, NEVILLE A. Understanding pitting corrosion behavior of X65 carbon steel in CO2-saturated environments: The temperature effect [J]. Corrosion, 2016, 72(1): 78-94. DOI: 10.5006/1338. [36] WU Qian......
and aerospace industry, but it is highly susceptible to pitting and intergranular corrosion undergoing sever corrosive circumstance and moisture atmosphere. To solve this problem and consequently... the mechanical properties. On the other hand, 2195 Al-Li alloy is highly susceptible to pitting, intergranular corrosion as well as stress corrosion crack undergoing moisture atmospheres or salt......
普通低碳钢与细晶粒钢钝化膜在碱性介质中的耐蚀性施锦杰1,孙伟1,耿国庆1(1.江苏省南京市东南大学材料科学与工程学院江苏省土木工程材料重点实验室)摘 要:应用循环伏安与动电位极化曲线确定普通低碳钢与细晶粒钢在碱性介质(模拟混凝上孔隙液)中的钝化区域.利用计时电流法在选取的阳极极化电位下使钢筋生成稳定的钝化膜,并通过电化学阻抗谱,Mott-Schottky曲线比较了钢筋在不同阳极电位下形成的钝化膜的优劣性;其次,循环极化曲线对比分析了在有无Cl~-存在时普通低碳钢与细晶粒钢钝化膜的耐蚀性.结果表明,2种钢筋的公共......
for being prone to corrosion in common use. The inhomogeneous distribution of Cu in the alloy microstructure has been shown to be a major cause for low resistance to pitting and stress corrosion cracking... corrosion of Al-Cu alloys [J]. Corrosion Science, 1970, 10(11): 795-807. [2] MULLER I L, GALVELE J R. Pitting potential of high purity binary aluminum alloys-I. Al-Cu alloys. Pitting and intergranular......
in size and less in quantity. Fig.5(d), a high magnification image of the pitting corroded area signed in Fig.5(a), shows that the corrosion occurs in the congregation area of silicon particles. During... magnification of pitting area in (a) From the results of electrochemical analysis, immersion test and SEM observations, corrosion resistance of ECAPed Al-23%Si alloy decreases after the first 4 passes......
in Fig. 8(b) shows a large number of micropits. These micropits can affect the corrosion resistance by inducing pitting corrosion in the future. A profile of the surface cross-section in Fig. 8(c) shows...Trans. Nonferrous Met. Soc. China 22(2012) s876-s880 Effect of pulse time on surface characteristics and corrosion resistance during pulse electrochemical polishing Young-Bin KIM1, Jeong-Woo PARK2 1......
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