This paper aims to provide a method for improving the tribological properties of 316L stainless steels in seawater. During the experimental process, laser texturing technology was used to create biomimetic micro-textures inspired by turtle shell patterns on the 316L stainless steel surfaces. Then, CrAlSiN coating was deposited on the textured surface using the physical vapor deposition (PVD) technique, allowing us to study the frictional properties of the samples in both atmospheric and seawater environments. The results showed that, compared to polished 316L stainless steel, the specimens treated with micro-texture and CrAlSiN coating exhibited a reduction in wear rate by 52.1% and 71.8% under atmospheric and seawater friction conditions, respectively. Under atmospheric friction conditions, the micro-textures had a limited effect on reducing the friction of the 316L stainless steel substrate. However, the CrAlSiN coating, due to its excellent mechanical properties, significantly improved the wear resistance of the 316L stainless steel. Under seawater friction conditions, the continuous CrAlSiN coating played a role in reducing 316L stainless steel wear and seawater corrosion. At the same time, the micro-textures acted as reservoirs for wear debris and seawater, forming a more stable seawater lubricating film and reducing the friction coefficient. Therefore, the synergistic effect of the CrAlSiN coating and biomimetic micro-textures demonstrated remarkable improvement in the tribological performance of 316L stainless steel in seawater environments.

本文旨在提供一种提高316L不锈钢在海水中摩擦学性能的方法。在实验过程中，采用激光纹理技术在316L不锈钢表面上创造出受海龟壳图案启发的仿生微纹理。然后，使用物理气相沉积 (PVD) 技术将 CrAlSiN 涂层沉积在纹理表面上，使我们能够研究样品在大气和海水环境中的摩擦特性。结果表明，与抛光316L不锈钢相比，经过微织构和CrAlSiN涂层处理的试件在大气和海水摩擦条件下的磨损率分别降低了52.1%和71.8%。在大气摩擦条件下，微观织构对降低316L不锈钢基体摩擦力的作用有限。而CrAlSiN涂层由于其优异的机械性能，显着提高了316L不锈钢的耐磨性。在海水摩擦条件下，连续CrAlSiN涂层起到了减少316L不锈钢磨损和海水腐蚀的作用。同时，微观纹理充当磨屑和海水的储存库，形成更稳定的海水润滑膜，降低摩擦系数。因此，CrAlSiN涂层和仿生微观织构的协同作用证明了316L不锈钢在海水环境中摩擦学性能的显着改善。