Liquid/solid contact mode of super-hydrophobic film in aqueous solution and its effect on corrosion resistance |
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Authors: | Peng Wang Dun Zhang Ri Qiu |
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Affiliation: | 1. Shandong Provincial Key Laboratory of Corrosion Science, Institute of Oceanology, Chinese Academy of Sciences, 7 Naihai Road, Qingdao 266071, China;2. Graduate School of the Chinese Academy of Sciences, 19 (Jia) Yuquan Road, Beijing 100039, China |
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Abstract: | Synthesised 3-undecyl-4-amino-5-mercapto-1,2,4-triazole (UAMT) was used to fabricate super-hydrophobic film on copper (Cu) using the one-step electrolysis method. The resultant layer formed from the alkyl-amino-mercapto-triazole-Cu(I) through precipitation mechanism. Super-hydrophobic film can contact with NaCl solution in two different modes (i.e., Cassie and Wenzel modes) depending on its immersion depth. Its corrosion protection mechanism varies with the contact mode. The film contacting with NaCl solution in the Cassie mode presents better protection effect due to the air trapped. It can remain stable within a wide potential range because of its excellent corrosion protection property and chemical stability. |
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