铝合金电刷镀与激光微加工耦合制备超疏水表面及其特性  

Fabrication and Properties of Superhydrophobic Surface on Aluminum Alloys Substrates by Brush Plating and Laser Processing Technology

作　　者：李晶[1] 赵言辉[1] 于化东[1] 杜锋[2] 弯艳玲[1] 

机构地区：[1]长春理工大学机电工程学院,长春130022 [2]装甲兵技术学院机械工程系,长春130117

出　　处：《中国机械工程》2017年第1期82-87,92,共7页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51505039);吉林省科技发展计划资助项目(20150204018GX);吉林省高校科学技术研究资助项目(22215096);中国博士后科学基金资助项目(2014M551145);长春理工大学青年科学基金资助项目(2021000522)

摘　　要：通过电刷镀与激光微加工技术相耦合的方法,在铝合金表面制备出一种微观尺度凸包与沟槽相互排列的特殊结构。未经任何疏水修饰的情况下,得到了一种低黏附性的超疏水表面,其静态接触角达到156°,滚动角约为4.8°,并且表面在滚动性方面表现出各向(平行沟槽方向和垂直沟槽方向)异性。所制备的表面对高温环境具有较好的稳定性,低温条件下也保持在接近138°较大接触角的疏水状态,且在抗结冰方面表现出优异的性能。通过3.5%(质量分数)NaCl溶液的Tafel曲线测量发现,基体被耦合方法处理后腐蚀阻抗平均提高3个数量级。A superhydrophobic surface on aluminum alloys substrates was fabricated by brush plating and laser processing technology. The special microstructure surface was clearly uniformly cov ered by many convex hull and grooves arrangement. It is found that the sample surface has low adhe- sion performance without any chemical modified. The water contact angle of the fabricated surface is up to 156~ and sliding angle is about 4.8~. In addition, the superhydrophobic surface has anisotropy （the direction of vertical groove and parallel groove） in sliding. The studies of the stability properties of superhydrophobic surface under different temperature environments show that, the contact angle of the superhydrophobic surface may also reaches 138~ under the low temperature conditions. It has shown excellent anti icing performance. The corrosion inhibition property of superhydrophobic coating in 3.5~ NaCI solution is examined by Tafel curve measurement, and results show that, the special surface structure of aluminum alloy corrosion resistant value improves 3 orders of magnitude.

关 键 词：超疏水 电刷镀 激光微加工 低黏附 耐腐蚀性 

分 类 号：TG174[金属学及工艺—金属表面处理]