高速微米颗粒冲击法制备超疏水金属表面  

Fabrication of superhydrophobic metal surface by the impact of high-speed micron-particles

作　　者：张友法[1,2] 余新泉[1,2] 陈锋[1,2] 周荃卉[1] 李康宁[1] 

机构地区：[1]东南大学材料科学与工程学院,江苏南京211189 [2]江苏省先进金属材料高技术研究重点实验室,江苏南京211189

出　　处：《金属制品》2010年第3期31-35,共5页Metal Products

基　　金：东南大学人才引进科研启动项目(4012001110)

摘　　要：超疏水金属表面具有自净、耐蚀、减阻、抗结冰等独特性能,应用前景广阔。为克服现有制备工艺复杂、成本较高的局限,采用简便的高速微米颗粒冲击法,冲击颗粒为直径180μm的棕刚玉,气动喷射压力0.8 MPa,冲击时间3～7 min,冲击处理后经质量浓度为6 g/L的NaOH溶液和去离子水清洗,再经氟硅烷乙醇溶液氟化处理并烘干,成功地在金属表面构建了微纳复合结构。制备的钢表面与水滴接触角160°,滚动角2.0°,铝合金表面与水滴接触角152°,滚动角2.2°,具有超疏水性。该制备方法简便,成本低,易工业化应用。Superhydrophobic metal surface have great application potential with unique properties in self-cleaning, corro- sion-resistance, resistance-reduction and anti-icing. In order to overcome the limitation of existing fabrication process which are usually complicated and high-costs, a facile method of the impact of high-speed micron-particles was adopted： impact particles are brown corundum with 180 μm diameter, pneumatic jet pressure is 0.8 MPa, impact time is 3 to 7 rain, cleaning with 6 g/L NaOH solution and deionized water after impacting, then fluoridating with fluorosilane ethanol solution and drying, the mieron-nanometer compound structure on metal surface is built successfully. The contact angle between fabricated steel surface and water droplet is 160° , the roll angle is 2.0° ; the contact angle between aluminum alloy surface and water droplet is 152° , the roll angle is 2.2° ; they show superhydrophobicity. The fabrication method is simple and convenient, low cost and easy to use to industry.

关 键 词：微米颗粒冲击 微纳复合结构 氟化 超疏水 

分 类 号：TG178[金属学及工艺—金属表面处理]