The protective and adhesion properties of silicone-epoxy hybrid coatings on 2024 Al-alloy with a silane film as pretreatment
The protective and adhesion properties of silicone-epoxy hybrid coatings on 2024 Al-alloy with a silane film as pretreatment
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DOI：
10.1016/j.corsci.2015.11.035
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发表时间：
2016-03-01
影响因子：
8.3
通讯作者：
Feng, T.
中科院分区：
文献类型：
--
作者：
Yuan, X.;Yue, Z. F.;Feng, T.
研究了经硅烷膜预处理的铝合金有机硅环氧涂层在NaCl溶液中的电化学性能和水传输性能。结果表明，在硅烷膜与有机硅-环氧涂层界面处，水的浓度存在不连续性。硅烷膜作为预处理提供增强的阻隔性能和优异的腐蚀保护。考虑到硅烷膜/有机硅-环氧树脂界面上的水浓度跃变，验证模型得到的涂层扩散系数与实验方法得到的结果相近。此外，相对于其他三种涂层系统，有机硅-环氧树脂/硅烷膜（pH 3.5）/铝合金系统保持最好的附着力。(C)2015爱思唯尔有限公司版权所有。
The electrochemical and water transport properties of silicone-epoxy coatings on Al-alloy pretreated with silane films are investigated in NaCl solution. The results show the non-continuity of water concentration at the interface of silane film and silicone-epoxy coating. The silane film as pretreatment provides enhanced barrier properties and excellent corrosion protection. Considering water concentration jump on the silane film/silicone-epoxy boundary, diffusion coefficient of the coating obtained by validation model is similar to that obtained from the experimental method. In addition, relative to the other three coating systems, the best adhesion is maintained for the silicone-epoxy/silane film (pH 3.5)/Al-alloy system. (C) 2015 Elsevier Ltd. All rights reserved.