ABSTRACT Investigation of tribological behaviour of NiCrSiBFe coating on SS 316L sliding against AISI 52100 bearing steel, alumina (Al2O3), and silicon nitride (Si3N4) under dry conditions carried out. Air Plasma Spraying (APS) and High Velocity Oxy Fuel (HVOF) thermal spraying methods used to deposit the coatings. The dry sliding wear tests were carried out with the ball on disc machine following the ASTM G99 standard and the normal loads used were 10N, 15N, and 20N along with the constant sliding velocity of 0.5 m s−1 at room temperature. The particle analysis, XRD, SEM, EDX, and nanoindentation were used for the characterisation of the powder, coatings, and worn surfaces. The spraying methods, counter materials, and normal loads were ranked based on the wear loss and coefficient of friction. The main wear mechanisms on the coating's wear track are abrasive and adhesive. The HVOF spraying method revealed enhanced wear resistance property as compared to the plasma-sprayed coating.

中文翻译：

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等离子和 HVOF 喷涂 NiCrSiBFe 涂层的摩擦学行为

摘要 对 SS 316L 上的 NiCrSiBFe 涂层在干燥条件下与 AISI 52100 轴承钢、氧化铝 (Al2O3) 和氮化硅 (Si3N4) 滑动的摩擦学行为进行了研究。用于沉积涂层的空气等离子喷涂 (APS) 和高速氧燃料 (HVOF) 热喷涂方法。干滑动磨损试验是按照 ASTM G99 标准在圆盘机上进行的，使用的正常载荷为 10N、15N 和 20N，在室温下以 0.5 m s-1 的恒定滑动速度进行。颗粒分析、XRD、SEM、EDX 和纳米压痕用于表征粉末、涂层和磨损表面。根据磨损损失和摩擦系数对喷涂方法、反材料和正常载荷进行排序。涂层的主要磨损机制' s 磨损轨迹具有磨蚀性和粘性。与等离子喷涂涂层相比，HVOF 喷涂方法显示出增强的耐磨性。