Cu-Zn合金仿生耦合表面的疏水性能  

Hydrophobic capability of bionic Cu-Zn alloy surfaces

作　　者：尚广瑞[1] 任露泉[2] 杨晓东[1] 丛茜[2] 

机构地区：[1]吉林工程技术师范学院机电分院,长春130052 [2]吉林大学地面机械仿生技术教育部重点实验室,长春130022

出　　处：《吉林大学学报（工学版）》2007年第5期1126-1131,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金重点资助项目(50635030);吉林省科技发展计划项目(20060513);中国博士后科学基金资助项目(2003034350)

摘　　要：采用模板法对Cu-Zn合金形态、结构、成分耦合表面仿生制备工艺及其疏水性能进行了研究。模板去除后,表面形成了相间密布的纳米级纯Cu突起及球形洞穴。研究表明:形态、结构、成分的仿生耦合可以使Cu-Zn合金表面由亲水转变为疏水,随着深径比ξ的增加以及水滴下固体面积分数Φs的减少,实际接触角从82.5°增加到了126.1°,实际接触角的变化服从Cassis-Baxter模型。Bionic Cu-Zn allay surface was fabricated by template technique. The coupling among the morphology, structure and the component of the surface and its h ydrophobic capability were studied. It was observed that arrays of nano-scale bumps and spherical caves of pure Cu were formed on the allay surface when the template was removed. Analyze indicates that the bionic coupling of the morphology, structure and component can lead the surface property of Cu-Zn allay transfer from hydrophilic to hydrophobic. The increase in the ratio of the height to radius of the bumps or caves and the decrease in the solid area fraction under the water drop result in the increase of the apparent contact angle from 82.5° to 126.1°, and the change of the apparent contact angle obeys Cassis-Baxter model.

关 键 词：工程仿生学 CU-ZN合金 电沉积 仿生耦合 实际接触角 

分 类 号：TB17[生物学—生物工程]