Effect of aluminium microstructure on corrosion and inhibiting effect of polyacrylic acid in H2SO4 solution

doi:10.1007/s10800-010-0240-5

IMR OpenIR

	Effect of aluminium microstructure on corrosion and inhibiting effect of polyacrylic acid in H2SO4 solution
	Umoren, S. A.1,2; Li, Y.1; Wang, F. H.1
通讯作者	Li, Y.(liying@imr.ac.cn)
	2011-03-01
发表期刊	JOURNAL OF APPLIED ELECTROCHEMISTRY
ISSN	0021-891X
卷号	41 期号:3 页码:307-315
摘要	The corrosion behaviour of a microcrystalline aluminium (mc-Al) coating fabricated from pure cast aluminium substrate by magnetron sputtering and the pure polycrystalline aluminium (pc-Al) were studied using electrochemical impedance spectroscopy and potentiodynamic polarization techniques in aerated 0.5 M H2SO4 at 30 +/- A 1 A degrees C. The corrosion inhibiting effect of polyacrylic acid (PAA) and synergistic effect of iodide ions was also investigated. Results obtained show that surface microcrystallization increases the corrosion susceptibility of pure cast aluminium leading to decrease in interfacial impedance and an increase in the kinetics of the anodic dissolution. Introduction of PAA into the corrosive medium was observed to retard the corrosion rates of both specimens. The inhibition mechanism was affected by the microstructure of the sample. PAA functions as a mixed inhibitor but under cathodic control for pc-Al and under anodic control for mc-Al. Addition of iodide ions synergistically increased the inhibition efficiency of PAA and this effect was more pronounced with mc-Al.
关键词	Microcrystallization Aluminium Polyacrylic acid Corrosion inhibition Synergism
资助者	Chinese Academy of Sciences (CAS) ; Academy of Sciences for the Developing World (TWAS) for the CAS-TWAS
DOI	10.1007/s10800-010-0240-5
收录类别	SCI
语种	英语
资助项目	Chinese Academy of Sciences (CAS) ; Academy of Sciences for the Developing World (TWAS) for the CAS-TWAS
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
WOS记录号	WOS:000287150700006
出版者	SPRINGER
引用统计	被引频次：24[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/321006/104189
专题	中国科学院金属研究所
通讯作者	Li, Y.
作者单位	1.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China 2.Univ Uyo, Dept Chem, Fac Sci, Uyo, Nigeria
推荐引用方式 GB/T 7714	Umoren, S. A.,Li, Y.,Wang, F. H.. Effect of aluminium microstructure on corrosion and inhibiting effect of polyacrylic acid in H2SO4 solution[J]. JOURNAL OF APPLIED ELECTROCHEMISTRY,2011,41(3):307-315.
APA	Umoren, S. A.,Li, Y.,&Wang, F. H..(2011).Effect of aluminium microstructure on corrosion and inhibiting effect of polyacrylic acid in H2SO4 solution.JOURNAL OF APPLIED ELECTROCHEMISTRY,41(3),307-315.
MLA	Umoren, S. A.,et al."Effect of aluminium microstructure on corrosion and inhibiting effect of polyacrylic acid in H2SO4 solution".JOURNAL OF APPLIED ELECTROCHEMISTRY 41.3(2011):307-315.