Preparation of self-healing hydrophobic coating on AA6061 alloy surface and its anti-corrosion property
Preparation of self-healing hydrophobic coating on AA6061 alloy surface and its anti-corrosion property
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AA6061合金表面自修复疏水涂层的制备及其防腐性能
DOI：
10.1016/j.jallcom.2018.10.080
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发表时间：
2019-02
影响因子：
6.2
通讯作者：
Tong Lin
中科院分区：
文献类型：
--
作者：
Daquan Zhang;Tinghui Yuan;Guoan Wei;Hongxia Wang;Lixin Gao;Tong Lin
采用水解的含氟烷基硅烷（FAS）和分散良好的含氟癸基笼型倍半硅氧烷（FD-POSS）在AA 6061合金表面形成了一层薄涂层。通过电化学测试和表面分析技术对其性能进行了评价。FD-POSS/FAS膜使AA 6061合金的自腐蚀电位（Ecorr）正移，并显著抑制了阳极和阴极腐蚀反应。经FD-POSS/FAS涂层处理后，腐蚀电流密度降低了一个数量级。涂层是疏水的，水接触角为130°。它是高度透明的，并具有优异的稳定性和合理的粘附AA 6061。该涂层还显示出显著的自修复能力，可以自动修复化学和物理损伤。该自修复FD-POSS/FAS涂层可为用于电力传输应用的铝合金提供有效的保护。
Hydrolyzed fluorinated alkyl silane (FAS) containing well-dispersed fluorinated-decyl polyhedral oligomeric silsesquioxane (FD-POSS) was used to form a thin coating layer on AA6061 alloy. Its performance was evaluated by the electrochemical measurements and surface analysis technology. The FD-POSS/FAS film shifted the corrosion potential (Ecorr) of AA6061 alloy to a positive value, and suppressed significantly the anodic and cathodic corrosion reactions. Corrosion current density was decreased by one order of magnitude after FD-POSS/FAS coating treatment. The coating was hydrophobic with a water contact angle of 130°. It was highly transparent and had excellent stability and reasonable adhesion with AA6061. The coating also showed a remarkable self-healing ability to auto-repair from both chemical and physical damages. This self-healing FD-POSS/FAS coating may provide an effective protection toward aluminum alloys for power transmission applications.
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影响因子：
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作者：
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