Preparation of superhydrophobic films on copper substrate for corrosion protection
Preparation of superhydrophobic films on copper substrate for corrosion protection
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DOI：
10.1016/j.surfcoat.2014.01.005
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发表时间：
2014-04-15
影响因子：
5.4
通讯作者：
Chen, Hong
中科院分区：
文献类型：
--
作者：
Fan, Youhua;Chen, Zejun;Chen, Hong
以醋酸铜和六亚甲基四胺为原料，在90℃的水热条件下，在铜衬底上合成了类似杨桃的CuO薄膜。CuO颗粒由厚度为80~120 nm的纳米金属组成，其形状与杨桃相似，宽600 nm，长800 nm。采用硬脂酸(STA)对CuO薄膜进行改性，使其具有超疏水性能，称为STA改性的CuO薄膜。用扫描电子显微镜、透射电子显微镜、X射线光电子能谱和水接触角等手段对CuO薄膜的形貌和化学成分进行了表征。经STA改性的CuO薄膜的WCA高达157度。用电化学阻抗谱(EIS)评价了经STA修饰的CuO膜在3.5wt%氯化钠溶液中的耐蚀性能和耐久性能。此外，还比较了STA改性的CuO薄膜与未改性的纯铜衬底的耐蚀性能。(C)2014爱思唯尔B.V.保留所有权利。
The carambola-like CuO film on copper substrate was hydrothermally synthesized using copper acetate and hexamethylenetetramine solutions at 90 degrees C. The CuO particles, which were composed of nanopetals with a thickness of 80 to 120 nm, had a shape similar to a carambola of 600 nm in width and 800 nm in lengths. The CuO film was endowed with superhydrophobic property by modifying with stearic acid (STA), which was referred to the STA-modified CuO film. The morphologies and chemical composition of the CuO film were characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and means of water contact angle (WCA). The WCA of the STA-modified CuO film was measured to be as high as 157 degrees. The corrosion resistance ability and durance property of the STA-modified CuO film in a 3.5 wt% sodium chloride solution was evaluated by electrochemical impedance spectroscopy (EIS). Moreover, the anticorrosion properties of the STA-modified CuO film were compared with the unmodified pure copper substrate. (C) 2014 Elsevier B.V. All rights reserved.