Electrochemical Corrosion of Bulk Nanocrystalline Aluminum in Acidic Sodium Sulfate Solutions at Room Temperature

IMR OpenIR

	Electrochemical Corrosion of Bulk Nanocrystalline Aluminum in Acidic Sodium Sulfate Solutions at Room Temperature
	Wang, S. G.; Huang, Y. J.; Sun, M.; Long, K.; Zhang, Z. D.; sgwang@imr.ac.cn
	2015
发表期刊	JOURNAL OF PHYSICAL CHEMISTRY C
ISSN	1932-7447
卷号	119 期号:18 页码:9851-9859
摘要	The corrosion properties of metallic materials are usually associated with the compactness of the oxide film and electrochemical parameters, such as corrosion potential, corrosion current density, pitting potential, etc. The valence electron configurations of metallic materials can also affect their corrosion properties because the nature of their corrosion processes involves the exchange and transportation of valence electrons between metallic atoms and ions. In the present work, the electrochemical corrosion of bulk nanocrystalline aluminum (BN-Al) produced by severe rolling technique and its conventional polycrystalline aluminum (CP-Al) counterpart in 0.01, 0.05, and 0.1 M HCl + 0.25 M Na2SO4 solutions at room temperature was studied by potentiodynamic polarization, electrochemical impedance spectroscopy, and scanning electron microscopy. The uniform and pitting corrosion resistances of BN-Al were simultaneously enhanced in comparison with those of CP-Al. The ion adsorption in oxide films along depth profiles on BN-Al and CP-Al and their valence electron configurations were characterized by X-ray photoelectron spectroscopy and ultraviolet photoelectron spectroscopy, respectively. The enhanced corrosion resistance of BN-Al resulted from its valence electron configuration rather than the Cl-, SO42-, and Na+ adsorptions and the oxide film on BN-Al.
部门归属	[wang, s. g. ; huang, y. j. ; sun, m. ; long, k. ; zhang, z. d.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
资助者	Natural Sciences Foundation of China [51171199]; National Basic Research Program of China, Ministry of Science and Technology China [2010CB934603]
收录类别	sci
语种	英语
WOS记录号	WOS:000354339000021
引用统计	被引频次：10[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/321006/74809
专题	中国科学院金属研究所
通讯作者	sgwang@imr.ac.cn
推荐引用方式 GB/T 7714	Wang, S. G.,Huang, Y. J.,Sun, M.,et al. Electrochemical Corrosion of Bulk Nanocrystalline Aluminum in Acidic Sodium Sulfate Solutions at Room Temperature[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(18):9851-9859.
APA	Wang, S. G.,Huang, Y. J.,Sun, M.,Long, K.,Zhang, Z. D.,&sgwang@imr.ac.cn.(2015).Electrochemical Corrosion of Bulk Nanocrystalline Aluminum in Acidic Sodium Sulfate Solutions at Room Temperature.JOURNAL OF PHYSICAL CHEMISTRY C,119(18),9851-9859.
MLA	Wang, S. G.,et al."Electrochemical Corrosion of Bulk Nanocrystalline Aluminum in Acidic Sodium Sulfate Solutions at Room Temperature".JOURNAL OF PHYSICAL CHEMISTRY C 119.18(2015):9851-9859.