Because of the microstructural anisotropy for laser cladding materials, the tribo-corrosion performance can vary significantly with different directions. In this study, one certain Fe-based coating was fabricated by laser cladding. To study the effects of anisotropy, three working surfaces (0°, 45°, and 90° to the building direction) were machined from the laser cladding samples; as-cast samples with an approximately homogeneous structure were prepared as controls. The tribo-corrosion tests were conducted in a 3.5 wt% NaCl solution with varying normal loads (5, 10, and 15 N). The results demonstrated that the 45° surface has superior friction stability, corrosion resistance, and wear resistance. This was directly related to the crystal orientation and grain boundary density. In addition, a refined microstructure may enhance tribo-corrosion properties by increasing deformation resistance and decreasing surface activity.

由于激光熔覆材料的微观结构各向异性，不同方向的摩擦腐蚀性能可能会有很大差异。在这项研究中，通过激光熔覆制备了一种特定的铁基涂层。为了研究各向异性的影响，从激光熔覆样品加工出三个工作表面（相对于建筑方向为 0°、45° 和 90°）；制备具有大致均匀结构的铸态样品作为对照。摩擦腐蚀测试在 3.5 wt% NaCl 溶液中以不同的法向载荷（5、10 和 15 N）进行。结果表明，45°表面具有优异的摩擦稳定性、耐腐蚀性和耐磨性。这与晶体取向和晶界密度直接相关。此外，