沉积熔融法制备超疏水微结构表面  

Preparation of Superhydrophobic Microstructure Surface by the Deposition Melting Method

作　　者：刘洋 欧阳清[1] 栾红伟 LIU Yang;OUYANG Qing;LUAN Hongwei(College of Power Engineering,Naval University of Engineering,Wuhan 430033,China;Teaching and Research Guarantee Center,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学动力工程学院,湖北武汉430033 [2]海军工程大学教研保障中心,湖北武汉430033

出　　处：《中国材料进展》2020年第1期59-63,共5页Materials China

摘　　要：传统超疏水表面制备技术都有着各自的缺点,如加工成本高、受加工设备精度影响大、形貌尺寸随机性大。为得到低成本、形貌尺寸相对可控的超疏水微结构表面,提出了新型制备技术——沉积熔融法。通过金属颗粒悬浊液的自然沉积使微纳尺寸的颗粒均匀分布在金属表面,经熔融、再结晶使其与金属表面结合,再采用低表面能高分子修饰,制备出超疏水微结构表面。通过此方法采用锡铅合金在以黄铜、45号钢、6063铝合金基底上制备了超疏水微结构表面,并发现了金属基底材质与微结构表面的疏水性能之间没有必然关系。当微米尺寸的颗粒直径越小,制备的微结构表面的疏水性就越大。此外,相较于传统超疏水表面加工方法,沉积熔融法可实现微米级形貌的制备,且具有加工效率高、工艺简单、成本低廉、不影响原工件强度等优点,但其难以在弧形表面上应用的问题需要进一步研究。Traditional preparation techniques for superhydrophobic surface have their own shortcomings,such as high processing costs,being prone to influence by the accuracy of equipment,high randomicity in morphologies and size.In order to obtain superhydrophobic surface with low cost and relatively controllable microstructure,deposition melting method was proposed.Through the natural deposition of metal-particle suspension,the micro/nano-sized particles can be evenly distributed on the metal surface.Then,the particles are bonded to metal surface by melting and recrystallization.Finally,the superhydrophobic microstructure surface is prepared after being modified by low surface energy polymer.By this method,superhydrophobic microstructure surfaces on brass,NO.45 steel and 6063 aluminum with Sn-Pb alloy particles were produced.It is found that there is no inevitable relationship between metal substrate and hydrophobicity of microstructure surface.However,the smaller the diameter of micro-sized grain is,the greater the hydrophobicity is.Moreover,compared to other traditional methods,deposition melting method can achieve the controllable preparation of microstructure surface.Furthermore,there are several other advantages,such as high processing efficiency,simple process,low cost,and having little influence on the strength of substrate.But,deposition melting method is difficult to apply on surface,which needs to be solved by further research.

关 键 词：超疏水微结构表面 沉积熔融法 金属颗粒分散 超声振动 

分 类 号：TG178[金属学及工艺—金属表面处理] O647.1[金属学及工艺—金属学]