High efficiency corrosion inhibitor 8-hydroxyquinoline and its synergistic effect with sodium dodecylbenzenesulphonate on AZ91D magnesium alloy

The inhibition effects of sodium dodecylbenzenesulphonate (SDBS) and 8-hydroxyquinoline (8HQ) on the corrosion of AZ91D magnesium alloy in ASTM D1384-87 corrosive solution were investigated by the electrochemical impedance spectroscopy and potentiodynamic polarization tests. For SDBS, the inhibition...

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Bibliographic Details
Published inCorrosion science Vol. 52; no. 5; pp. 1603 - 1609
Main Authors Gao, H., Li, Q., Dai, Y., Luo, F., Zhang, H.X.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.05.2010
Subjects
A. Magnesium
B. EIS
B. Polarization
C. Neutral inhibition
Corrosion
Corrosion effects
Corrosion inhibitors
Inhibition
Magnesium base alloys
Sodium dodecylbenzenesulphonate
Spectra
Synergistic effect
A. Magnesium
B. EIS
B. Polarization
C. Neutral inhibition
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Summary:The inhibition effects of sodium dodecylbenzenesulphonate (SDBS) and 8-hydroxyquinoline (8HQ) on the corrosion of AZ91D magnesium alloy in ASTM D1384-87 corrosive solution were investigated by the electrochemical impedance spectroscopy and potentiodynamic polarization tests. For SDBS, the inhibition effect was not significant. For 8HQ, a monotonic increase in inhibition efficiency was observed as a function of the immersion time, and the component of the film was Mg(8HQ) 2, which was characterized by three spectra methods. Upon mixing 8HQ and SDBS inhibitors, a synergistic inhibition behavior was observed, and a proper synergistic inhibition mechanism was proposed.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2010.01.033