Influence of laser geometric morphology type on Si C surface wettability  

作　　者：WANG Rong BAI ShaoXian 

机构地区：[1]College of Mechanical Engineering, Zhejiang University of Technology

出　　处：《Science China(Technological Sciences)》2016年第4期592-596,共5页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.51275473);the Zhejiang Provincial Natural Science Foundation of China(Grant No.LR14E050001);the Tribology Science Fund of State Key Laboratory of Tribology of China(Grant No.SKLTKF14B13)

摘　　要：To obtain effective surface morphology to control surface wettability, this work investigated the influence of protuberant and concave morphology, which are respectively represented by circle-dimpled and micro-square-convex morphology, on surface wettability. The geometric morphologies were processed on silicon carbide （SIC） surfaces by a laser-marking machine, and surface wettability was monitored by the measurement of contact angles using the sessile drop method. Correlation analysis between contact angles and morphology parameters was conducted to determine the extent of influence. The results showed that the circle-dimpled diameter had a signific^mt influence on surface wettability, whereas grooved width did not. Additionally the depth of dimples and grooves exerted less influence on controlling wetting behaviors. In addition, surface wettability transformed from a superhydrophilic state to a hydrophobic state on micro-square-convex surfaces; contact angles on cir- cle-dimpled surfaces showed a relatively slow transformation, though the surface wettability also underwent the state change.

关 键 词：circle-dimpled morphology micro-square-convex morphology WETTABILITY SIC 

分 类 号：TN304.24[电子电信—物理电子学]