Thermal-induced transformation of wetting behaviors on laser-textured SiC surfaces  

作　　者：BAI Shao Xian WANG Rong 

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

出　　处：《Science China(Technological Sciences)》2016年第6期862-866,共5页中国科学（技术科学英文版）

基　　金：supported by the Zhejiang Provincial Natural Science Foundation of China(Grant No.LR14E050001);the National Natural Science Foundation of China(Grant No.51275473)

摘　　要：Thermal-induced transformation of wetting behaviors on laser-textured silicon carbide （SIC） surfaces was discussed in this work. To investigate the transformation, a quenching experiment was conducted and an X-ray diffractometer was used to measure the residual stress. The experimental results demonstrate that the significantly enhanced hydrophilicity was induced by the increasing thermal residual stress of SiC materials after the aqueous quenching. It was found that the decrease in the contact angle increased with the increasing quenching temperature. Quenching at 350℃ led to the change of contact angle from 89.28° to 70.88° for the smooth surface, while from 72.25° to 33.75° for the laser-textured surface with depth 8 μm. Further, the surface hydrophobicity was enhanced by the release of thermal residual stress after quenching, thereby leading to an increase in the contact angle over time. The transformation of wetting behaviors on laser textured SiC surfaces can be achieved mutually by the aqueous quenching method.

关 键 词：wettability transformation silicon carbide laser processing aqueous aquenching 

分 类 号：TN304.24[电子电信—物理电子学] TS101.3[轻工技术与工程—纺织工程]