【摘要】 采用激光微织构加工技术分别在SAF2507双相不锈钢和碳纤维增强聚醚醚酮(CF/PEEK)表面制备不同形状、面积占有率的微织构凹坑，通过润湿性试验分析时间、液滴体积、微织构形状与面积占有率、液滴种类对润湿性的影响。结果表明：液滴润湿材料表面过程中，固液接触角先随时间迅速减小，后保持在一个较为稳定的值；使用体积较大的液滴测量接触角时，液滴铺展的速度减缓，接触角的测量值变小；CF/PEEK表面的接触角随微织构面积占有率的增大而减小，SAF2507表面的接触角随微织构面积占有率的增大而增大；微织构面积占有率相同的表面，方柱形微织构表面的接触角小于圆柱形微织构表面，润湿效果更好；天然海水在光滑和织构表面的接触角均小于蒸馏水。更多还原

【Abstract】 Micro texture pits with different shapes and area occupancy were prepared on the surfaces of SAF2507 duplex stainless steel and carbon fiber reinforced polyether ether ketone(CF/PEEK) by laser micro texture processing technology.The effects of time, droplet volume, micro texture shape and area occupancy and droplet type on wettability were analyzed by wettability test.The results show that in the process of wetting the material surface by droplets, the solid-liquid contact angle first decreases rapidly with time, and then remains at a relatively stable value; when measuring the contact angle with larger droplets, the spreading speed of droplets slow down and the measured value of contact angle become smaller; the contact angle of CF/PEEK surface decrease with the increase of micro texture area occupation, and the contact angle of SAF2507 surface increase with the increase of micro texture area occupation; for the surface with same area occupation of micro texture, the contact angle of square cylindrical micro texture surface is smaller than that of cylindrical micro texture surface, and the wetting effect is better; the contact angle of natural seawater on smooth and texture surfaces is less than that of distilled water.更多还原