中文摘要：

采用中性电解液,通过电化学加工技术及氟化处理方法制备出铝基体超疏水表面,接触角达160°,滚动角小于5°,并在其上进行了结冰和结霜研究。在不同实验条件下研究超疏水表面的形貌、霜高随时间的变化,并与相同条件下的普通铝表面、吸水性表面进行了对比。结果表明,该超疏水表面经过50多次结霜、除霜后,仍具有很好的超疏水性能,表现出良好的重复性和耐久性;与普通铝表面相比,铝基体超疏水表面具有明显的抗结冰结霜性能,霜晶先出现在四周边缘处并逐渐蔓延到中间,但抑霜能力随着冷表面温度的降低而减小;与吸水性表面相比,超疏水表面在抗结冰结霜的同时能有效抑制表面质量的增加。

英文摘要：

The superhydrophobic surface on aluminum substrate with water contact angle of 160° and contact angle hysteresis lower than 5° was fabricated by electrochemical machining with the neutral electrolyte and fluorination,then ice and frost formation on it was studied.The surface topography and frost thickness under different experimental conditions were investigated and compared with the superhydrophobic surface,ordinary aluminum surface and hydrophilic surface,respectively.The experimental results show that the surface still has good hydrophobic properties in reproducibility and durability after 50 times frost and defrosting.Moreover,the superhydrophobic surface demonstrates the anti-icing and frosting capability eminently compared with ordinary aluminum surface,frost crystals appear arounding the edge of the superhydrophobic surface firstly,then spread gradually to the entire surface,but the anti-icing and frosting capability will reduce with the decrease of temperature of cold surfaces.Furthermore,the superhydrophbic surface can prevent the increasement of ice mass effectively compared with hydrophilic surface.