To simultaneously protect the 304 stainless steel from corrosion and wear conditions, a FeCrMoCBSi coating with nearly full amorphous microstructure was deposited via activated combustion high-velocity air–fuel (AC-HVAF) technique. Initially, the porosity and microhardness of the coating were employed as two indicators to optimize the spray distance and powder feed rate. Then, the corrosion and reciprocating friction behavior of the best Fe-based amorphous (FA) coating and the bare 304 stainless steel were comparatively investigated. Experimental results show that the FA coating exhibited favorable corrosion resistance including high corrosion potential, low corrosion current density and additionally enhanced electrochemical impedance. Therefore, with FA coating deposited on the substrate, its surface was only subjected to slight etch pits instead of severe corrosion holes in a 3.5 wt.% NaCl solution. Besides, it is found that the sprayed FA coating could also effectively protect the substrate from severe abrasive wear and reduce its wear damage. The major wear mechanism was a combination of fatigue wear and adhesive wear derived from the micro-fracture and delamination at matrix and inter-splats.

为了同时保护 304 不锈钢免受腐蚀和磨损条件的影响，通过活化燃烧高速空气燃料 (AC-HVAF) 技术沉积了具有几乎完全无定形微观结构的 FeCrMoCBSi 涂层。最初，涂层的孔隙率和显微硬度被用作优化喷涂距离和送粉速度的两个指标。然后，比较研究了最佳铁基非晶（FA）涂层和裸露的304不锈钢的腐蚀和往复摩擦行为。实验结果表明，FA涂层表现出良好的耐腐蚀性，包括高腐蚀电位、低腐蚀电流密度和额外增强的电化学阻抗。因此，通过在基材上沉积 FA 涂层，在 3.5 wt.% NaCl 溶液中，其表面仅受到轻微的腐蚀坑，而不是严重的腐蚀孔。此外，发现喷涂FA涂层还可以有效地保护基材免受严重的磨粒磨损并减少其磨损损伤。主要的磨损机制是疲劳磨损和粘着磨损的结合，这些磨损源于基体和板间的微断裂和分层。