Akademik Veri Yönetim Sistemi
Surface and Coatings Technology, cilt.524, 2026 (SCI-Expanded, Scopus)
Corrosion of components exposed to marine environment results in significant economic losses, underscoring the urgent need for development of durable coatings to resist chloride-induced degradation. In this work, a ∼ 3 μm-thick nanolayered TiN/AlSiN coating was deposited on Ti-6Al-4 V alloy by cathodic arc ion plating through alternating TiN and AlSiN layers, and its performance was systematically compared with single-layer TiN and AlSiN coatings and the corrosion protection and failure mechanisms in marine environments are elucidated. Results show that the multilayer architecture transforms detrimental three-dimensional (3D) droplet defects in AlSiN into less harmful two-dimensional (2D) interlayer defects, thereby mitigates their role in corrosion initiation. Electrochemical testing demonstrates that the multilayer achieves the highest corrosion potential (−0.33 V) and reduces corrosion current density by ∼93% relative to TiN, evidencing superior chloride resistance in seawater. Long-term salt spray testing (960 h) further confirms sustained protection in a marine atmosphere, where a unique three-layered degradation structure retards coating failure. These findings establish a new paradigm in defect modulation, suggesting that multilayer design not only enhances mechanical robustness but also reconfigures unavoidable deposition defects into controllable lateral forms, thereby extending service durability under marine atmospheric exposure.