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155°.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.%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 155° and provide effective friction-reducing and wear protection for Zn substrate, due to the combined beneficial effects of nanotexturing of DMF treatment and nanolubrication of self-assembled stearic acid overcoat.
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