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| Comparative Test on Anti-corrosion Technology of Steel Fasteners in Coastal Environment |
| Received:November 21, 2018 Revised:April 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.04.017 |
| KeyWord:fastener antiseptic coating test contrast |
| Author | Institution |
| WANG Hong-lun |
1. Key Laboratory of Space Launching Site Reliability Technology, XSLC, Haikou , China |
| LIN Zhi-feng |
2. Key Laboratory of Marine Corrosion and Protection,725 Institute of China Shipbuilding Heavy Industry, Qingdao , China |
| ZHANG Bang-shuang |
1. Key Laboratory of Space Launching Site Reliability Technology, XSLC, Haikou , China |
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| Abstract: |
| Objective To study corrosion protection techniques for steel fasteners through experiment and comparison to solve the serious corrosion of steel fasteners for large engineering projects in the South China Sea. Methods The protective film was prepared on surface of steel fasteners. The corrosion behavior of different coatings was accelerated by in-situ sample test and laboratory environment simulation acceleration test. The failure mechanism of different coatings under simulated conditions was studied by electrochemistry test. Results Analysis of data of field test, laboratory acceleration test and electrochemical impedance test showed that the antiseptic effects of different coatings of fasteners were sorted as follows: composite coating > zinc and aluminum coating > powder zinc≈hot dip zinc plating＞zinc plating＞oxidation film layer protection. Conclusion The antiseptic properties of six surface treatment techniques for fasteners are evaluated by experiments. It provides theoretical basis and technical support for selection of anti-corrosion measures for fasteners used for equipment in the sea. |
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