Enhanced Anticorrosion Properties of Epoxy Coatings from Al and Zn Based Pigments |
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| Authors: | WAN Kai LI Changcheng XING Cuijuan ZHAO Haizhou YU Liangmin |
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| Institution: | 1. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P. R. China;
2. College of Chemical Engineering and Biotechnology, Xingtai University, Xingtai 054001, P. R. China |
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| Abstract: | Anticorrosion epoxy coatings from Al and Zn based pigments were synthesized by adjusting their volume ratios, aiming at their increasing anticorrosion performances. The anticorrosion properties were examined via electrochemical impedance spectroscopy, Tafel polarization curve analysis and salt spray test. The coating morphologies before and after the salt spray tests were studied via scanning electron microscopy(SEM). The elemental and chemical compositions of the corroded surfaces of the coatings were analyzed by means of X-ray photoelectron spectroscopy(XPS). The results indicate that the coating composed of Al/Zn at 10:1(volume ratio) displays the maximum anticorrosion performances, which are superior to those of pristine Al or Zn based pigment. |
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| Keywords: | Organic coating Al pigment Zn pigment Anticorrosion performance Salt spray test |
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