Akademik Veri Yönetim Sistemi
The 6th International Conference of Materials and Engineering Technology (TICMET'25), Gaziantep, Türkiye, 6 - 09 Ekim 2025, ss.324, (Özet Bildiri)
Cold Spray (CS) is a solid-state coating process in which metal powders are propelled to supersonic velocities by a high-pressure, high-velocity gas stream at relatively low temperatures. Upon impact with the substrate, particles undergo extensive plastic deformation, enabling metallurgical bonding without melting. This solid-state mechanism preserves the chemical and microstructural integrity of the feedstock material while minimizing thermal degradation phenomena such as oxidation, porosity, and residual stresses. Consequently, CS enables the fabrication of dense, uniform coatings with favorable surface morphology and mechanical performance. Due to these advantages, CS has emerged as a promising technology for highperformance applications in the aerospace, defense, and space sectors—particularly in surface refurbishment, dimensional restoration, and corrosion-resistant coating systems— where thermal effects must be minimized. In this study, CS deposition was sprayed onto a Ti6Al4V substrate (60×60×4 mm³) fabricated via Selective Laser Melting (SLM), using spherical Ti6Al4V powders with a particle size distribution of 0–20 µm. The primary objective was to optimize CS process parameters to observe coating integrity and interfacial adhesion. Considering the limitations of low-pressure spraying, temperature, nozzle-distance, and advancement speed were fixed at constant values, while gas pressure and powder feed rate were systematically varied. Coating characteristics—including thickness, homogeneity, surface morphology, and adhesion—were evaluated through scanning electron microscopy (SEM). Subsequently, under the previously optimized selected parameter set, the effect of different advancement speeds (10, 20, 30, and 40 mm/s) on the accumulation behavior was analyzed.
Keywords: Additive Manufacturing, Cold Spray, Ti6Al4V, Coating, Advancement Speed