Akademik Veri Yönetim Sistemi
Electrochimica Acta, cilt.554, 2026 (SCI-Expanded, Scopus)
In this study, the tribocorrosion behaviour of surface textured samples produced by Selective Laser Melting (SLM) were investigated under open circuit potential (OCP) and potentiodynamic polarization (PP) conditions. Surface textures improved the tribocorrosion performance of AISI 316L through debris trapping and additional hydrodynamic benefit effects. The circular surface textures exhibited the best performance compared to the square textures in both OCP and PP conditions. The stress concentrations at sharp corners and local current concentration adversely affected the tribocorrosion behaviour of square geometries. The 25CR sample, which had the highest area density among the circular patterns, exhibited the best tribocorrosion performance under OCP conditions, where wear dominated behaviour was observed. Under PP tribocorrosion conditions, the best performance was observed in the 15CR sample, where a synergistic effect of wear and corrosion was present, with corrosion being the dominant factor. In the tribocorrosion test under PP, the increased potential led to the breakdown of the passive film, while the accumulation of corrosive products on the surface contributed to increased roughness and, consequently, a higher coefficient of friction. Furthermore, the tribocorrosion test under PP showed a significant release of Fe, Cr, and Ni due to intensified electrochemical degradation, which further weakened the tribocorrosion performance. These results highlight the critical role of surface geometry in optimizing the tribocorrosion performance of additively manufactured alloys, offering new insights for the design of tribocorrosion resistant metallic components.