Akademik Veri Yönetim Sistemi
TRIBOLOGY INTERNATIONAL, cilt.213, 2026 (SCI-Expanded)
The space, aviation, and defence industries demand advanced engineering solutions that ensure high reliability, durability, and performance under extreme conditions, which has become increasingly important in recent times. In these sectors, wear and corrosion are critical factors that limit the service life of mechanical components by causing damage under operating conditions, not only impairing their expected functional properties but also potentially leading to severe consequences such as structural fatigue, breakage, and catastrophic failure. In order to improve surface qualities and reduce material consumption, repair-maintenance costs, and economic expenses, this study developed TiN-based multilayer coatings through using the CFUBMS technique to deposit various coating cycle numbers on silicon and Inconel 718 (IN718) superalloy substrates. For these purposes, the structural, mechanical, tribological, and corrosion behaviours of the coatings were characterised using SEM, EDS, XRD, microhardness measurement, pin-on-disc friction-wear evaluation, scratch adhesion test, and electrochemical corrosion analysis. The analyses revealed the following results. As the coating cycle numbers increased, the coating thicknesses ranged from 1.75 mu m to 4.85 mu m. Meanwhile, the nitrogen content in the coatings was found to reach approximately 36-39 %. The formation of AlN, TiN, and TiAlN phases during the coating process was confirmed by XRD analysis. Among the specimens, the three-cycle (C3) coating mostly exhibited superior performance with the highest hardness (HC3 = 20.5 GPa, which is 3,75 times higher than the substrate), the lowest average coefficient of friction (C3, mu mean = 0.272, which is 1.30 times lower than the substrate), the lowest wear rate (KC3 = 2.558 x10-15 m3/N & sdot;m, which is 54 times lower than the substrate), and significantly improved corrosion resistance (C3, Icorr = 94 nA, which is 12.75 times better than the substrate). However, damage progressively worsened and adhesion strength declined as the number of layers increased, which resulted in poor adhesion performance of the three-cycle coating. The highest adhesion strength was observed in the one-cycle (C1) specimen, with a critical load (Lc) of 30 N. Consequently, these findings substantiated the potential of CFUBMS technique as cost-effective and efficient methods for achieving durable surface protection and enhanced functionality of mechanical components in critical industries. Correspondingly, this study further confirmed the effectiveness of TiN-based multilayer coatings in enhancing the functional properties of Inconel 718, with the best performance corresponding to specific coating cycle numbers identified during the investigation.