Journal
CORROSION SCIENCE
Volume 53, Issue 9, Pages 2872-2880Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.05.019
Keywords
Steel; Organic coatings; EIS; AFM
Funding
- Ministry of Education and Science, Republic of Serbia [III 45019]
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The effect of different type of iron-phosphate coatings on corrosion stability and adhesion characteristic of top powder polyester coating on steel was investigated. Iron-phosphate coatings were deposited on steel in the novel phosphating bath with or without NaNO2 as an accelerator. The corrosion stability of the powder polyester coating was evaluated by electrochemical impedance spectroscopy (EIS), adhesion by pull-off and NMP test, while surface morphology of phosphate coatings were investigated by atomic force microscopy (AFM). The adhesion and corrosion stability of powder polyester coatings were improved with pretreatment based on iron-phosphate coating deposited from NaNO2-free bath. (C) 2011 Elsevier Ltd. All rights reserved.
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