This study prepared samples with femtosecond(fs)-laser-induced periodic surface structures (LIPSSs) controlled by laser power (or peak fluence, F 0 ) and overlap ratio (OR) to improve the friction and wear behavior of the SKD 61 tool steel sliding against a hard Si 3 N 4 ceramic counterface in oil lubrications. Pin-on-plate (pin: Si 3 N 4 ; plate: SKD 61 steel) tribological tests were conducted with the reciprocating motion perpendicular to the laser scanning direction and having an incline angle (40°~50°) with respect to the LIPSSs. The contact angles ( θ ) formed on the textured surfaces were measured for an oil lubricant. The ( θ ) oil results were found to have their correlation with the areal surface roughness (S a ), skewness (Sk), and kurtosis (Ku) of the textured surfaces produced at various F 0 and OR values. The mean friction coefficient ( μ ) and wear loss (W) of the steel specim...

中文翻译：

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飞秒激光功率和重叠比对带油润滑的织纹SKD 61工具钢的表面粗糙度参数，接触角和摩擦学性能的影响

这项研究制备了具有飞秒（fs）-激光诱导的周期性表面结构（LIPSSs）的样品，该结构受激光功率（或峰值通量F 0）和重叠比（OR）控制，以改善SKD 61工具钢的摩擦磨损性能在油润滑中可与坚硬的Si 3 N 4陶瓷对接面滑动。以垂直于激光扫描方向的往复运动并且相对于LIPSS倾斜角度为（40°〜50°）的方式进行销钉装板（销钉：Si 3 N 4;板块：SKD 61钢）的摩擦学测试。 。测量在油性润滑剂上形成在有纹理的表面上的接触角（θ）。发现（θ）油的结果与在各种F 0和OR值下产生的纹理表面的表面粗糙度（S a），偏度（Sk）和峰度（Ku）有相关性。