ABSTRACT Nickel-based superalloys are considered as superior material due to their higher mechanical strength. However, it has poor tribological properties during continuous sliding condition. In this study, two various alloy powders, namely, NiCrFeMoNb and FeCrMoVC were deposited on nickel-based superalloy. Further, the produced layers were examined to expose their hardness, phase formation and microstructure. The wear resistance of the both layers was examined through ball on disk wear tester. Besides, worn surfaces of deposition and roughness were analyzed. The obtained results indicate that both laser depositions have shown a homogeneous structure with improved hardness. The wear resistance of FeCrMoVC cladding has improved while compared with NiCrFeMoNb cladding and base material which indicates that FeCrMoVC coating plays a significant role in tribological properties. Abrasion, adhesion and tribo-oxidation were identified as a major wear mechanism.

中文翻译：

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NiCrFeMoNb/FeCrMoVC激光熔覆镍基高温合金工艺对比研究

摘要 镍基高温合金由于其较高的机械强度而被认为是优良材料。然而，它在连续滑动条件下的摩擦学性能很差。在这项研究中，两种不同的合金粉末，即 NiCrFeMoNb 和 FeCrMoVC 沉积在镍基高温合金上。此外，检查生产的层以暴露它们的硬度、相形成和微观结构。两层的耐磨性通过球盘磨损试验机进行检测。此外，还对沉积磨损表面和粗糙度进行了分析。获得的结果表明，两种激光沉积都显示出具有改进硬度的均匀结构。FeCrMoVC 覆层的耐磨性比 NiCrFeMoNb 覆层和基材有所提高，这表明 FeCrMoVC 涂层在摩擦学性能中起着重要作用。磨损、粘附和摩擦氧化被认为是主要的磨损机制。