Composite deposition mechanism of 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one in zinc films for enhanced corrosion resistant properties

•DCOIT participated in the electrodeposition process by chelating Zn2+.•DCOIT chelated Zn2+ by means of its carbonyl group and carbon-chloride bond.•The DCOIT mass faction of the DCOIT-zinc composite film was 5%.•The DCOIT-zinc composite film exhibited uniform corrosion in natural seawater. The pres...

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Bibliographic Details
Published in:Journal of industrial and engineering chemistry (Seoul, Korea) 2016, 36(0), , pp.147-153
Main Authors: Zhai, Xiaofan, Sun, Congtao, Li, Ke, Agievich, Maria, Duan, Jizhou, Hou, Baorong
Format: Article
Language:English
Subjects:
4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one
Bacterial corrosion
Chelate
Composite zinc film
Corrosion
Corrosion prevention
Corrosion resistance
Deposition
Electrodeposition
Infrared absorption
Sea water
Spectroscopy
Zinc
화학공학
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Summary:•DCOIT participated in the electrodeposition process by chelating Zn2+.•DCOIT chelated Zn2+ by means of its carbonyl group and carbon-chloride bond.•The DCOIT mass faction of the DCOIT-zinc composite film was 5%.•The DCOIT-zinc composite film exhibited uniform corrosion in natural seawater. The present research seeks to address biologically influenced corrosion by electrodepositing a novel 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one(DCOIT)-zinc composite films for enhanced corrosion resistant properties. Investigated by electrochemical methods, energy dispersive spectroscopy distribution mapping, and infrared absorption spectroscopy, a deposition mechanism was proposed wherein the DCOIT molecule chelated the zinc ion to participate in electrodeposition. The DCOIT-zinc chelate produced obvious alterations in the surface morphology and crystal orientations. Thermogravimetric analysis determined the DCOIT mass fraction in the composite film was 5%. The DCOIT-zinc composite film demonstrated uniform corrosion in natural seawater and the enhanced anticorrosion property was achieved by successfully embedding DCOIT.
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2016.01.033