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
Corresponding AuthorLi, Y.(liying@imr.ac.cn)
2011-03-01
Source PublicationJOURNAL OF APPLIED ELECTROCHEMISTRY
ISSN0021-891X
Volume41Issue:3Pages:307-315
AbstractThe 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.
KeywordMicrocrystallization Aluminium Polyacrylic acid Corrosion inhibition Synergism
Funding OrganizationChinese Academy of Sciences (CAS) ; Academy of Sciences for the Developing World (TWAS) for the CAS-TWAS
DOI10.1007/s10800-010-0240-5
Indexed BySCI
Language英语
Funding ProjectChinese Academy of Sciences (CAS) ; Academy of Sciences for the Developing World (TWAS) for the CAS-TWAS
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000287150700006
PublisherSPRINGER
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/104189
Collection中国科学院金属研究所
Corresponding AuthorLi, Y.
Affiliation1.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
Recommended Citation
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.
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