Fe 45 Cr 16 Mo 16 C 18 B 5 amorphous coatings were deposited on the mild steel substrate (0.45 wt.% C) by plasma spraying, and their corrosion resistance in 3.5 wt.% NaCl solution was compared with those of the substrate and 316 stainless steel. Potentiodynamic tests revealed that the as-prepared coatings had higher resistance to local corrosion than 316 stainless steel due to their wide passivation range. Electrochemical impedance spectroscopy (EIS) measurements further explained the long-term corrosion process of the coatings and indicated their excellent corrosion resistance. Based on this analysis, a schematic diagram of the corrosion mechanism of the coatings was proposed. The obtained results imply that Fe 45 Cr 16 Mo 16 C 18 B 5 amorphous coatings have a promising prospect for industrial applications.

中文翻译：

---

等离子喷涂高耐蚀铁基非晶涂层的腐蚀机理

Fe 45 Cr 16 Mo 16 C 18 B 5 非晶涂层通过等离子喷涂沉积在低碳钢基体（0.45 wt.% C）上，并将其在3.5 wt.% NaCl溶液中的耐腐蚀性能与基体和316不锈钢。动电位测试表明，由于钝化范围宽，所制备的涂层比 316 不锈钢具有更高的抗局部腐蚀能力。电化学阻抗谱 (EIS) 测量进一步解释了涂层的长期腐蚀过程，并表明它们具有优异的耐腐蚀性。在此分析的基础上，提出了涂层腐蚀机理的示意图。所得结果表明，Fe 45 Cr 16 Mo 16 C 18 B 5 非晶涂层具有良好的工业应用前景。