| 曹京宜,张寒露,张锋,全乐,唐聿明.不同防污涂层下5083铝合金的海水腐蚀性能研究[J].装备环境工程,2016,13(4):28-34. CAO Jing-yi,ZHANG Han-lu,ZHANG Feng,QUAN Le,TANG Yu-ming.Seawater Corrosion Performances of 5083 Aluminum Alloy under Antifouling Coating Systems[J].Equipment Environmental Engineering,2016,13(4):28-34. |
| 不同防污涂层下5083铝合金的海水腐蚀性能研究 |
| Seawater Corrosion Performances of 5083 Aluminum Alloy under Antifouling Coating Systems |
| 投稿时间：2016-03-28 修订日期：2016-08-15 |
| DOI：10.7643/ issn.1672-9242.2016.04.005 |
| 中文关键词: 防污涂层 电化学交流阻抗 铜离子释放 铝合金 腐蚀 |
| 英文关键词:antifouling coating EIS release of cupric ion aluminum alloy corrosion |
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| Author | Institution |
| CAO Jing-yi | Naval Coatings Analysis and Test Center, Beijing 102442, China |
| ZHANG Han-lu | Naval Coatings Analysis and Test Center, Beijing 102442, China |
| ZHANG Feng | Middle Road No 19 of XISANHUAN, Beijing 100036, China |
| QUAN Le | Beijing University of Chemical Technology, Beijing 100029, China |
| TANG Yu-ming | Beijing University of Chemical Technology, Beijing 100029, China |
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| 中文摘要: |
| 目的 研究舰船用不同类型防污漆下5083铝合金的海水腐蚀性能。方法 采用电化学交流阻抗方法研究加入不同防污剂的三种舰船常用防污体系在完好状态下和人工破损状态下的耐蚀性能。结果 获得了3种不同防污体系对5083铝合金在海水浸泡条件下的耐蚀性能结果。结论 在涂层体系完好时，加入不同种类防污剂的防污漆体系对基体5083铝合金都有很好的保护作用。其中低表面能类型的防污涂料不易发生水解，所以涂层阻抗随时间变化的幅度很小，涂层的屏蔽性更好、涂层孔隙率更低、颜料与溶液反应阻力更大，保护作用最优异，性能最稳定。在涂层破损状态下，三种防污体系的腐蚀速率为低表面能﹤硫氰酸亚铜﹤Cu2O防污涂层，防污涂层中存在的防污剂Cu2O可加速铝合金基体的腐蚀。 |
| 英文摘要: |
| Objective To investigate the seawater corrosion performances of 5083 Aluminum Alloy under different kinds of ship antifouling coating systems. Methods Corrosion resistances of three kinds of ship antifouling coating systems containing different antifouling agents with and without artificial damages were studied by electrochemical impedance spectroscopy. Results The corrosion resistances results of three kinds of ship antifouling coating systems on 5083 aluminum alloy immersed in seawater were obtained. Conclusion For coatings without artificial damages, all the antifouling coating systems had very good protective property on 5083 aluminum alloy. Among them, the antifouling coating with low surface free energy showed the best barrier property and stable performance, this is probably because it was difficult for the coating system with low surface free energy to be hydrolyzed so as to have slight variation of the impedance with immersion time and much lower porosity and bigger reaction resistance of pigment with electrolyte. Under condition of artificial damages of the antifouling coatings, the corrosion rate for three coating systems followed the order of v(low surface free energy coating)﹤v(CuSCN）﹤v(Cu2O）. Therefore, Cu2O in the antifouling coating might accelerate the corrosion of the aluminum alloy. |
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