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| Corrosion Behavior of New Nano-coatings in Accelerated Corrosion Environment |
| Received:August 22, 2019 Revised:October 15, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.02.006 |
| KeyWord:nano coating method of appearance rating corrosion damage the impedance characteristics |
| Author | Institution |
| MU Xian-lian |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehicle Research Institute, Jingmen , China |
| HU Yang |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehicle Research Institute, Jingmen , China |
| JIN Tao |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehicle Research Institute, Jingmen , China |
| LIU Cheng-chen |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehicle Research Institute, Jingmen , China |
| WANG Hao-wei |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehicle Research Institute, Jingmen , China |
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| Abstract: |
| The paper aims to evaluate the corrosion resistance of the new nano-coating system in marine atmospheric simulation environment and industrial atmospheric simulation environment.Appearance rating method, thickness loss analysis, electrochemical impedance analysis, fatigue life analysis were adopted to comparatively analyze gloss, chromatic aberration, comprehensive rating, thickness loss, fatigue life, impedance characteristics of new nano coating system and (TB06-9 paint primer + TS96-71) coating system in marine atmospheric environment and industrial atmospheric simulation environment in different accelerating periods.With the increase of acceleration test cycle, the comprehensive level of two kinds of coating system increased from level 0 to 3; the thickness loss increased gradually from 0 μm to 15 μm; the electrochemical impedance values fell to10 kΩ.cm2; and the external environment spectrum had a greater influence on the corrosion resistance of the two kinds of coating compared with internal environment spectrum, so did the industrial atmosphere simulating ocean environment compared with the marine atmosphere simulation environment. But for the two kinds of coating system under different acceleration spectrum, the fatigue life cycles was between 49 000 to 55 000, and there was no obvious change.Based on the comprehensive analysis on the corrosion damage characteristics and corrosion damage rules of the two coating systems, it can be seen that the nano-coating system has a good weathering resistance, but compared with the coating system (TB06-9 primer + TS96-71 topcoat), its corrosion resistance is poor. |
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