为了研究硬质合金表面激光微织构对其表面润湿性的影响, 利用光纤激光不同功率(3, 5, 7, 9, 10 W)及不同加工次数(1, 2, 3, 4, 5)加工微凹坑, 采用VHX1000c超景深三维显微镜、光学显微镜分析微凹坑形貌, 利用CAM 200光学接触角仪测量表面微织构(微凹坑直径、深度和织构密度)与润湿性之间的关系。结果表明: 随着激光功率的增大, 微凹坑深度增加, 直径变化不明显; 硬质合金表面的亲水性能随着微凹坑深度的增加而减小; 随着微凹坑直径的增大, 亲水性增强; 随着微织构密度的增加, 亲水性出现极值。

In order to study the influence of laser micro texture carbide surface on its surface wettability, this paper uses the optical fiber laser power(3, 5, 7, 9, 10 W) and machining number (1, 2, 3, 4, 5) to get different micro-pores and then uses cultra-depth three-dimensional microscopy and optical microscopy to analyze their microscopy. Optical contact angle meter is used to discuss the relationships between micro-textured surface (diameter, depth and density of micro-pores) and its wettability. The results show that with the increase of the laser power, the micro indentation depth increases while the diameter variation is not obvious, the hydrophilicity of the surface decreases with the increase of micro indentation depth, increases with the increase of the micro-pore diameter and reaches the extremum with the increase of the density of the micro-textured surface.