金属锌表面超疏水薄膜的制备及其摩擦学性能.pdf

第 27 卷 第 4 期 无 机 材 料 学 报 Vol. 27 No. 4 2012 年 4 月 Journal of Inorganic Materials Apr., 2012 文章编号: 1000-324X(2012)04-0390-05 DOI: 10.3724/SP.J.1077.2012.00390 金属锌表面超疏水薄膜的制备及其摩擦学性能 万 勇, 王中乾, 刘义芳 (青岛理工大学 机械工程学院, 青岛 266033) 摘 要: 通过简单两步法在金属锌表面构筑超疏水薄膜, 锌片首先经 N,N-二甲基甲酰胺(DMF)处理在表面构筑微纳 结构薄膜, 然后在表面覆盖硬脂酸薄膜以实现超疏水. 采用扫描电子显微镜, 傅里叶红外光谱仪和接触角测量仪 等手段表征了超疏水表面的形成机制和表面形貌, 并利用微纳米摩擦磨损试验机研究了超疏水薄膜的减摩耐磨特 性. 研究结果发现, 在锌表面形成了一层纳米棒状结构的超疏水薄膜, 水的接触角可达 155o. 超疏水薄膜具有明显 的减摩和耐磨特性, 这可归因于 DMF 处理导致的表面微织构化效应以及脂肪酸自组装薄膜的纳米润滑效应. 关 键 词: 超疏水; 锌; 摩擦; 薄膜 中图分类号: O64 文献标识码: A Fabrication and Tribological Performance of Superhydrophobic Film on Zinc Substrate WAN Yong, WANG Zhong-Qian, LIU Yi-Fang (School of Mechanical Engineering, Qingdao Technological University, Qingdao 266033, China) Abstract: The super-hydrophobic films on Zinc (Zn) substrate were fabricated by a simple two-step process. Firstly, nano-structured film was created to roughen Zn surface by solution oxidation process in the presence of N, N,-dimethylformamide (DMF). Resultant roughened Zn surface was then overcoated with stearic acid to achieve superhydrophobicity. Scanning electron microscope, FT-IR microscope and water contact angle measurement were performed to characterize the morphological feature, chemical composition and super-hydrophobicity of the surface. The resulting surfaces with uniform and packed nanorod structure have a water contact angle as high as about 155o and provide effective fr