| ZHANG Zhe,YAN Gang,NI Fu-song,JIA Ming-zi.Electrochemical Noise Analysis for Evaluating the Protection Properties of Al2O3 Nanoparticles Epoxy Coating for Steel Bar[J],43(2):18-23,54 |
| Electrochemical Noise Analysis for Evaluating the Protection Properties of Al2O3 Nanoparticles Epoxy Coating for Steel Bar |
| Received:October 25, 2013 Revised:December 26, 2013 |
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| DOI： |
| KeyWord:Al2O3 nanoparticles epoxy coating steel bar electrochemical noise electrochemical impedance spectroscopy |
| Author | Institution |
| ZHANG Zhe |
Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering; Guilin , China;College of Chemistry and Bioengineering, Guilin University of Technology, Guilin , China |
| YAN Gang |
College of Chemistry and Bioengineering, Guilin University of Technology, Guilin , China |
| NI Fu-song |
College of Chemistry and Bioengineering, Guilin University of Technology, Guilin , China |
| JIA Ming-zi |
College of Chemistry and Bioengineering, Guilin University of Technology, Guilin , China |
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| Abstract: |
| Objective To study the protective performance of Al2O3 nanoparticles epoxy composite coating of steel. Methods The Al2O3 nanoparticles were prepared, and then added into the epoxy coating, coated on the steel as a film. The Al2O3 nanoparticles were characterized by XRD and SEM. The anti-corrosive properties of the composite coatings in the solution of 3. 5% NaCl were evaluated by electrochemical noise and electrochemical impedance spectroscopy. Results The average size of Al2O3 nanoparticles was 75 nm. Based on the time and frequency domains analysis of electrochemical noise data, the analysis of electrochemical impedance spectroscopy and data fitting, it was found that the composite coating with 0. 1% Al2O3 nanoparticles ( as a percentage in the weight of epoxy resin) had the best protective performance on steel. Conclusion The epoxy coating supplemented with a suitable amount of Al2O3nanoparticles showed significantly improved protective performance on steel. |
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