Модифікація поверхні титанових сплавів лазерним наплавленням композитів: структурні особливості та триботехнічні властивості

• Datum: 2025
• 1. Verfasser: Кирилаха, С. В.
• Format: Artikel
• Sprache: Ukrainisch
• Veröffentlicht: Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine 2025
• Schlagworte: титанові сплави; лазерні композитні покриття; зносостійкість; трибологія; мікроструктура; Ni–WC; Ti3SiC2; лазерне наплавлення; модифікація поверхні; адитивні технології
• Online Zugang: https://surfacezbir.com.ua/index.php/surface/article/view/808
• Назва журналу: Surface

This paper presents a review of recent studies on laser composite coatings for titanium alloys, which are considered a promising approach to improving their wear resistance and service life under operating conditions. The novelty of the work lies in the systematization and comparison of approaches to the formation of reinforced layers on titanium-based substrates using laser alloying, cladding, and composite modifiers (Ni, WC, Ti3SiC2, Y2O3, ect.), which makes it possible to identify the most effective mechanisms for controlling microstructure and tribological characteristics. The aim of the study is to summarize recent experimental findings on the influence of laser technologies on the structure and properties of titanium alloys, as well as to outline further prospects for their practical application. The review materials include publications of leading researchers (Fehg, Wang, Yan, et al.), which are based on tribological tests, microstructural analysis, and comparison with alternative coatings. The methodology of the work is grounded in a critical analysis of experimental data and the correlation of wear resistance, friction coefficient, and surface morphology under different conditions. The main results demonstrate that the formation of reinforced Ni–WC composite layers reduces the friction coefficient of titanium alloys on average by 35–40%, while the introduction of self-lubricating phases Ti3SiC2, TiC, Ti5Si3) further enhances the stability of tribological characteristics. A regularity has been revealed according to which the optimal combination of a metallic matrix and carbide phases minimizes plastic deformation and wear under loads typical for the aviation and transportation industries. The conclusions emphasize that laser composite coatings on titanium substrates are an effective means of improving operational reliability; however, further research should be directed towards investigating the behaviour of such systems in marine environments, at elevated temperatures, and under cyclic loading.