Formability of organic coatings—an electrochemical approach
By Chen, Y.M; Yu, G.P & Huang, J.H
Published in Electrochimica Acta
NULL
2004
Abstract
Coil-coated samples of electrogalvanised steel were submitted to uniaxial, biaxial and plane strain of various magnitudes and tested by electrochemical impedance spectroscopy (EIS). A good correlation was encountered between the coating resistance and the equivalent plastic strain. Microscopic inspection of the coatings suggests that the decrease in the coating resistance is a consequence of defects originated by cracks on the phosphate and by loss of adhesion at the polymer/pigment interface.
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