Corrosion behavior of LY12CZ aluminum alloy in simulated acid rain solution

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	Corrosion behavior of LY12CZ aluminum alloy in simulated acid rain solution
	B. G. An; X. Y. Zhang; S. Z. Song; H. X. Li; E. H. Han
	2003
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	13 期号:1 页码:116-120
摘要	The variations of corrosion potential, electrochemical impedance and surface morphology of LY12 aluminum alloy with pH of simulated acidic rain solutions were investigated with EIS and SEM. It is found that corrosion potential shifts to less noble value with increasing pH in the solutions of pH lower than 3. 1 and shifts to more noble value in the solutions of pH higher than 3. 1. In the solutions of pH lower than 3. 1, the electrochemical impedance diagram has a capacitive loop at higher frequency and an inductive loop at lower frequency and the magnitude of high frequency loop decreases with decreasing pH and increasing period of immersion. However, in the solutions of pH higher than 3. 4 two capacitive loops appear and the magnitude of high frequency loops increases with pH and period of immersion. Observation of SEM shows that the pitting intensity increases with decreasing pH in the range of pH2. 0similar to3. 4, no evident pits are observed at pH higher than 3. 4. The experiment results were discussed from resistance of oxide film and adsorption processes of anions in simulated acid rain solution.
部门归属	tianjin univ, dept mat sci & technol, tianjin 300072, peoples r china. chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.
关键词	Acid Rain Aluminum Alloy Impedance Sem Anodic-dissolution Electrode Zinc Impedance Copper Model Iron Ions
URL	查看原文
WOS记录号	WOS:000181242400025
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35783
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. G. An,X. Y. Zhang,S. Z. Song,et al. Corrosion behavior of LY12CZ aluminum alloy in simulated acid rain solution[J]. Transactions of Nonferrous Metals Society of China,2003,13(1):116-120.
APA	B. G. An,X. Y. Zhang,S. Z. Song,H. X. Li,&E. H. Han.(2003).Corrosion behavior of LY12CZ aluminum alloy in simulated acid rain solution.Transactions of Nonferrous Metals Society of China,13(1),116-120.
MLA	B. G. An,et al."Corrosion behavior of LY12CZ aluminum alloy in simulated acid rain solution".Transactions of Nonferrous Metals Society of China 13.1(2003):116-120.