| Effect of aluminium microstructure on corrosion and inhibiting effect of polyacrylic acid in H(2)SO(4) solution | |
| S. A. Umoren; Y. Li; F. H. Wang | |
| 2011 | |
| Source Publication | Journal of Applied Electrochemistry
 |
| ISSN | 0021-891X |
| Volume | 41Issue:3Pages:307-315 |
| Abstract | 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 H(2)SO(4) 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. |
| description.department | [umoren, s. a.; li, y.; wang, f. h.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. [umoren, s. a.] univ uyo, dept chem, fac sci, uyo, nigeria.;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 |
| Keyword | Microcrystallization Aluminium Polyacrylic Acid Corrosion Inhibition Synergism Electrochemical Impedance Spectroscopy Microcrystalline Aluminum Hydrochloric-acid Carbon-steel Iodide-ions Behavior Iron Nanocrystallization Alloy Polarization |
| URL | 查看原文 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/30714 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | S. A. Umoren,Y. Li,F. H. Wang. Effect of aluminium microstructure on corrosion and inhibiting effect of polyacrylic acid in H(2)SO(4) solution[J]. Journal of Applied Electrochemistry,2011,41(3):307-315. |
| APA | S. A. Umoren,Y. Li,&F. H. Wang.(2011).Effect of aluminium microstructure on corrosion and inhibiting effect of polyacrylic acid in H(2)SO(4) solution.Journal of Applied Electrochemistry,41(3),307-315. |
| MLA | S. A. Umoren,et al."Effect of aluminium microstructure on corrosion and inhibiting effect of polyacrylic acid in H(2)SO(4) solution".Journal of Applied Electrochemistry 41.3(2011):307-315. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Effect of aluminium （489KB） | 开放获取 | -- | ||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment