提供了一种在不锈钢基体上制备高粘附超疏水薄膜的方法。利用飞秒激光结合水热法在316L不锈钢表面制备了高粘附超疏水薄膜。先在高真空环境下，用能流密度2.4 J/cm2的飞秒激光在不锈钢表面制备出微米级周期性锥状钉结构；然后采用水热法在已经溅射了一层 ZnO 种晶层的不锈钢微结构表面制备出ZnO 纳米杆薄膜，形成微米级锥状钉结构与ZnO 纳米杆相结合的双尺度微纳结构。SEM和 XRD分析结果表明产物为六方纤锌矿结构的 ZnO 晶体。这种双尺度结构表面的表观接触角为160.2°，同时对水滴具有高粘附性。根据建立的微结构几何模型和假定的润湿状态，给出了接触角的计算公式，计算值与实验结果一致性较好。
High adhesive superhydrophobicity film was prepared on 316L stainless steel surface by femtosecond laser combined hydrothermal method.Firstly,periodic spikes on micron scale were fabricated with laser fluence of 2.4 J/cm2 in high vacuum.Secondly,a seed layer was prepared on the microstructured surface by magnetron sputtering.Finally,ZnO nanorods film was prepared on the seed layer by hydrothermal method.The micro-spikes and ZnO nanorods composed a dual-scale structure.SEM and XRD results revealed that the reaction was ZnO crystal with hexagonal wurtzite structure.The apparent contact angle on the dual-scale structure was 160.2°.Furthermore,the film had a high adhesive force to water.Based on the microstructure geometric mod-el and hypothetical wetting state,the computational formula of apparent contact angle was produced.The cal-culated value accorded well with the experimental result.We provided an effective method to fabricate film with high adhesive superhydrophobicity on stainless steel surface.
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