Abstract This work improves the tribological behavior via innovative surface designs for slipper pairs in seawater axial piston pumps. 316L stainless steel and carbon fiber/polyether ether ketone (CF/PEEK) were selected as friction pair matching materials due to their good corrosion resistance, self-lubrication, and wear resistance. One type of smooth surface and five different types of pit nonsmooth surfaces were created on CF/PEEK specimens. Rotational sliding tests were performed on a friction and wear tester at a load of 200 N at five different sliding speeds (0.79, 1.18, 1.57, 1.96, and 2.36 m/s) under seawater lubrication. The experimental results indicate that the friction process of the smooth surface friction pair is mainly based on abrasive wear and adhesive wear. The friction coefficient range is 0.05–0.08, the specimen contact temperature is 38–75 °C, and the wear rates of 316L and CF/PEEK are 2.3 × 10−5 to 1.2 × 10−4 mm3/(MPa·m) and 5.6 × 10−4 to 7.6 × 10−3 mm3/(MPa·m), respectively. Pits on the specimen surface produce a hydrodynamic effect and store wear debris. The friction process of the nonsmooth surface friction pair is mainly controlled by a ploughing mechanism with only a slight amount of adhesive wear. The friction coefficient range is decreased to 0.03–0.07, the specimen contact temperature is decreased to 28–54 °C, and the wear rates of 316L and CF/PEEK are decreased to 1.2 × 10−5 to 9.1 × 10−5 mm3/(MPa·m) and 2.6 × 10−3 to 7.1 × 10−3 mm3/(MPa·m), respectively. The geometrical arrangement of the elliptical and tri-prism pits increases the convergence gap range and produces a higher bearing capacity. As the sliding speed increases, the friction coefficient first decreases and subsequently slightly increases, the specimen contact temperature increases, and the wear rate decreases.

中文翻译：

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海水润滑下316L不锈钢与CF/PEEK非光滑表面摩擦副的摩擦学特性

摘要 这项工作通过海水轴向柱塞泵滑靴副的创新表面设计改善了摩擦学行为。选用316L不锈钢和碳纤维/聚醚醚酮（CF/PEEK）作为摩擦副匹配材料，因其良好的耐腐蚀性、自润滑性和耐磨性。在 CF/PEEK 试样上创建了一种类型的光滑表面和五种不同类型的凹坑非光滑表面。在海水润滑下，在 200 N 的载荷下，以五种不同的滑动速度（0.79、1.18、1.57、1.96 和 2.36 m/s）在摩擦磨损试验机上进行旋转滑动试验。实验结果表明，光滑面摩擦副的摩擦过程主要以磨粒磨损和粘着磨损为主。摩擦系数范围为0.05-0.08，试样接触温度为38-75℃，316L和CF/PEEK的磨损率为2.3×10-5～1.2×10-4 mm3/(MPa·m)和5.6×10-4～7.6×10分别为-3 mm3/(MPa·m)。试样表面上的凹坑会产生流体动力效应并储存磨损碎屑。非光滑面摩擦副的摩擦过程主要由耕作机构控制，仅有少量粘着磨损。摩擦系数范围降低至0.03-0.07，试样接触温度降低至28-54℃，316L和CF/PEEK的磨损率降低至1.2×10-5至9.1×10-5 mm3/ (MPa·m) 和 2.6 × 10-3 至 7.1 × 10-3 mm3/(MPa·m)，分别。椭圆形和三棱形凹坑的几何排列增加了会聚间隙范围，产生了更高的承载能力。随着滑动速度的增加，