阳极氧化法快速制备低粗糙度铝基体硬超疏水表面(英文)  

Rapid Fabrication of Hard Superhydrophobic Surfaces with Low Roughness on Aluminum Substrates via Anodization

作　　者：徐文骥[1] 宋金龙[1] 孙晶[1] 陆遥[1] 

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024

出　　处：《硅酸盐学报》2011年第11期1857-1861,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金重大研究计划(90923022)资助项目

摘　　要：借助阳极氧化法和氟化处理技术对铝表面进行改性。以Na3PO4水溶液为电解液在铝表面加工出粗糙蜂窝状结构,再以具有低表面能的氟硅烷为改性剂对铝表面的粗糙结构进行改性。结合扫描电子显微镜、能谱仪、接触角测量仪、Vickers显微硬度(HV)测量仪和三维表面轮廓仪对加工后的铝表面进行表征。结果表明:当加工时间为8 min时,铝表面获得了粗糙蜂窝状结构,其超疏水性较好,水滴与表面的接触角达到168.1°,滚动角为1°;当加工时间为13 min时,加工后的铝表面的粗糙度(轮廓算术平均偏差Ra)仅为0.409μm,且表面HV高达3 840 MPa。该方法所制备的超疏水表面具有超疏水性能好、表面硬度高和耐磨性好等优点。Surface modification of aluminum substrates is prepared by anodization and fluorination.Firstly,the honeycomb-like structures are fabricated on aluminum substrates via anodization with Na3PO4 electrolytes;and then,the rough structures are modified by modifying reagent,which is fluoroalkylsilane with the low surface energy property.The resulting aluminum surfaces are analyzed by scanning electron microscope,energy dispersive X-ray spectroscopy,optical contact angle meter,digital Vickers microhardness（HV） tester,and 3 dimensional surface profilometer.The results show that when the treating time is 8 min,the honeycomb-like rough structures and the better superhydrophobicity with a water contact angle of 168.1°and a water tilting angle of 1°are obtained.When the treating time reaches 13 min,the roughness（profile arithmetic average error Ra） on the resulting aluminum substrates is just 0.409 μm,and HV reaches to 3 840 MPa.The superhydrophobic surfaces fabricated by the above method have good superhydrophobicity,higher microhardness,and better wear resistance

关 键 词：超疏水表面 阳极氧化铝 低粗糙度 磷酸三钠 

分 类 号：TG66[金属学及工艺—金属切削加工及机床]