Steelmaking slag (SmS) powder and commercial WC-reinforced composite powders (NiCrBSi/WC (50/50) and WC/Co (88/12)) were deposited on the AISI 316 L stainless steel substrates by atmospheric plasma spraying (APS), and high velocity oxy fuel (HVOF) spraying techniques. The microstructures as well as the room and high temperature wear performances of the fabricated coatings were comparatively evaluated to assess the usability of steelmaking slag, an industrial by-product of steelmaking industry, as an alternative protective coating material against room and high temperature sliding wear. The friction-wear tests of all coatings against Al₂O₃ abrader were performed on a high-temperature ball-on-disk tribometer at room temperature and elevated temperatures (250 °C–500 °C) under 5 and 10 N normal loads. The powders, as-sprayed and worn samples were characterized by X-ray diffraction (XRD), scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) techniques and a 3D optical surface profiler. The SmS coating structure displayed the highest porosity which was followed by NiCrBSİ-WC and WC-Co coatings. WC-Co coating exhibited the lowest specific wear rates until being damaged at 500 °C due to severe decarburization. NiCrBSi-WC and SmS coatings withstood the 500 °C wear test and NiCrBSi-WC coating slightly outperformed SmS coating under high load whereas SmS coating displayed lower wear rates under low load. SmS coating's stable oxide-rich structure acted in the favor of the coating's wear performance. The slight increase in the wear rate of SmS coating with the increase of temperature from 250 °C to 500 °C is believed to be induced by the large temperature gradients between the real contact areas and their surroundings. Overall, plasma sprayed SmS coating exhibited promising results when compared with its commercial HVOF sprayed WC-reinforced composite counterparts.

通过常压等离子体喷涂（APS）将炼钢炉渣（SmS）粉末和商业用WC增强复合粉末（NiCrBSi / WC（50/50）和WC / Co（88/12））沉积在AISI 316 L不锈钢基材上，和高速氧燃料（HVOF）喷涂技术。对制成的涂层的微观结构以及室温和高温磨损性能进行了比较评估，以评估炼钢炉渣（炼钢行业的工业副产品）作为替代性保护涂层材料的抗室温和高温滑动磨损性能。所有涂层对Al ₂ O ₃的摩擦磨损试验在室温和升高的温度（250°C–500°C）下，在5 N和10 N的正常负载下，在高温球磨机上进行了研磨。通过X射线衍射（XRD），扫描电子显微镜/能量色散光谱（SEM / EDS）技术和3D光学表面轮廓仪对粉末，喷涂后和磨损的样品进行表征。SmS涂层结构显示出最高的孔隙率，其次是NiCrBSİ-WC和WC-Co涂层。WC-Co涂层表现出最低的比磨损率，直到由于严重的脱碳而在500°C损坏。NiCrBSi-WC和SmS涂层在500°C的磨损测试中经受住了考验，而NiCrBSi-WC涂层在高负载下的性能略好于SmS涂层，而SmS涂层在低负载下的磨损率更低。SmS涂层' 稳定的富氧化物结构有利于涂层的耐磨性能。SmS涂层的磨损率随温度从250°C升高到500°C的轻微增加，被认为是由于实际接触区域及其周围环境之间的温度梯度较大所致。总体而言，等离子喷涂SmS涂层与其商业HVOF喷涂WC增强复合材料对应物相比显示出令人鼓舞的结果。