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| Influence of Three Derusting Methods on the Corrosion Resistance of Q235 Steel Surface Coating |
| Received:December 15, 2020 Revised:January 04, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.04.018 |
| KeyWord:Q235 steel rust remover phosphating corrosion resistance |
| Author | Institution |
| DING Yong-zhi |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehical Research Institute, Jingmen , China |
| WANG Hao-wei |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehical Research Institute, Jingmen , China |
| WEI Li-jun |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehical Research Institute, Jingmen , China |
| LIU Yuan-hai |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehical Research Institute, Jingmen , China |
| WANG Guang-chao |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehical Research Institute, Jingmen , China |
| WANG Yuan-yuan |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehical Research Institute, Jingmen , China |
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| Abstract: |
| The effects of three different derusting methods (grinding and derusting, first derusting and then phosphating, and derusting and phosphating integration) on the corrosion resistance of the coating are compared and studied. The surface of Q235 steel treated with three rust removal methods is sprayed with graphene epoxy zinc-rich primer to test the adhesion of the coating, and the corrosion resistance of the coating is tested through the neutral salt spray test. The test results show that the surface performance of Q235 steel becomes better after the integrated treatment of rust removal and phosphating, and the coating adhesion reaches 13.6 MPa. After the neutral salt spray test for 1000 h, the coating does not blisters, does not fall off, and the degree of corrosion is small. Rust removal and phosphating treatment on the surface of Q235 steel can effectively improve the corrosion resistance of the anti-corrosion coating, which simplifies the process compared with first rust removal and then phosphating. |
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