Effect of polyacrylic acid on the corrosion behaviour of aluminium in sulphuric acid solution

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	Effect of polyacrylic acid on the corrosion behaviour of aluminium in sulphuric acid solution
	S. A. Umoren; Y. Li; F. H. H. Wang
	2010
发表期刊	Journal of Solid State Electrochemistry
ISSN	1432-8488
卷号	14 期号:12 页码:2293-2305
摘要	Electrochemical techniques using both ac and dc as well as surface analyses approach were used to investigate the corrosion inhibition characteristics of polyacrylic acid (PAA) for pure cast aluminium in 0.5 M H(2)SO(4) at 30 +/- 1 A degrees C. The effect of iodide ion additives was also studied. The results obtained indicate that PAA inhibited the corrosion of pure cast aluminium in the acid medium by adsorption onto the metal surface following Frumkin adsorption isotherm model. Inhibition efficiency increases with an increase in PAA concentration and synergistically enhanced by the addition of iodide ions. A mixed inhibition mechanism is proposed for the inhibitive effects of PAA as revealed by potentiodynamic polarisation technique. Synergism parameter evaluated was found to be greater than unity, indicating that the enhanced inhibition efficiency of PAA on addition of iodide ions was synergistic in nature. Fourier transform infrared analyses revealed that the synergistic effect of iodide ions and PAA is due to co-adsorption of iodide ions and PAA molecules which is cooperative in nature.
部门归属	[umoren, saviour a.; li, ying; wang, fuhui h.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. [umoren, saviour a.] univ uyo, fac sci, dept chem, uyo, niger.;li, y (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china;liying@imr.ac.cn
关键词	Polyacrylic Acid Aluminium Synergism Iodide Ion Adsorption Acid Corrosion Mild-steel Corrosion Cold-rolled Steel 1.0 m Hcl Synergistic Inhibition Impedance Technique Alkaline-solutions Polyvinyl-alcohol Pitting Corrosion Phosphoric-acid H2so4 Solutions
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WOS记录号	WOS:000284161300023
引用统计	被引频次：58[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/321006/31483
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. A. Umoren,Y. Li,F. H. H. Wang. Effect of polyacrylic acid on the corrosion behaviour of aluminium in sulphuric acid solution[J]. Journal of Solid State Electrochemistry,2010,14(12):2293-2305.
APA	S. A. Umoren,Y. Li,&F. H. H. Wang.(2010).Effect of polyacrylic acid on the corrosion behaviour of aluminium in sulphuric acid solution.Journal of Solid State Electrochemistry,14(12),2293-2305.
MLA	S. A. Umoren,et al."Effect of polyacrylic acid on the corrosion behaviour of aluminium in sulphuric acid solution".Journal of Solid State Electrochemistry 14.12(2010):2293-2305.