Influence of laser geometric morphology type on SiC surface wettability
Influence of laser geometric morphology type on SiC surface wettability
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激光几何形貌类型对SiC表面润湿性的影响
DOI：
10.1007/s11431-015-5904-2
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发表时间：
2016-04-01
影响因子：
4.6
通讯作者：
Bai ShaoXian
中科院分区：
文献类型：
--
作者：
Wang Rong;Bai ShaoXian
为了获得有效的表面形貌来控制表面润湿性，本工作研究了分别以圆形凹坑和微方凸形貌为代表的凸形和凹形形貌对表面润湿性的影响。通过激光打标机在碳化硅（SiC）表面上加工几何形貌，并通过座滴法测量接触角来监测表面润湿性。进行接触角和形貌参数之间的相关性分析以确定影响程度。结果表明，圆凹坑直径对表面润湿性有显着影响，而凹槽宽度则没有。此外，凹坑和凹槽的深度对控制润湿行为的影响较小。此外，微方凸表面的表面润湿性从超亲水状态转变为疏水状态；圆形凹坑表面的接触角表现出相对缓慢的转变，尽管表面润湿性也经历了状态变化。
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 significant 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 circle- dimpled surfaces showed a relatively slow transformation, though the surface wettability also underwent the state change.