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Collection of scientific works Nanosystems, nanomaterials, nanotechnologies Year 2025 Volume 23, Issue 1
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N.I. HRECHANIUK, V.H. HRECHANIUK, V.O. CHORNOVOL, I.M. HRECHANIUK, and O.V. MATSENKO

Designs of Electron-Beam-Assisted Heat-Shielding Coatings on Gas Turbine Blades, Including Those with Boride Nanoparticles in the Outer Ceramic Layer

255–267 (2025)

PACS numbers: 61.43.Gt, 62.23.Pq, 81.05.Rm, 81.10.Bk, 81.15.Gh, 81.40.Lm, 81.70.Bt

The article provides a comprehensive analysis of heat-resistant coating structures, which can be implemented using the electron-beam evaporation-condensation method. The authors are examined available constructions of heat-resistant coatings on blades of various-purpose gas turbines. The analysis reveals that these coatings result in an increase in gas temperature before entering the turbines' flow path or an enhancement of the blades' operational lifespan, while maintaining the gas temperature leading to increased efficiency and fuel savings. Optimal parameters are established for different types of coatings, including the structure and compositional makeup of layers, contributing to improved heat resistance and overall coating durability. The prospects of utilizing thermal-barrier coatings with nanoparticle borides in an external ceramic layer are highlighted. Detailed descriptions of the laboratory and industrial electron-beam facilities for applying coatings are provided, ensuring optimal conditions for material workability and melting. Special attention is directed towards the latest L-9 facility distinguished from its predecessors by employing electron-beam guns with a cold cathode enhancing their stability and operational longevity. Furthermore, the article outlines the technical specifics of these facilities, their construction, and their capabilities for applying various types of coatings. Information regarding the management system of these setups and the operational principle of the cutting-edge facility capable of depositing various protective coatings, including new micro-layered silicide coatings, is also presented. Considering this detailed review of technologies and facilities, the article highlights the direction of research and development in the field of protective heat-resistant coatings, aiming to enhance the reliability and efficiency of gas turbines

KEYWORDS: electron-beam equipment, evaporation–condensation method, vapour-condensed composite materials, thermal-barrier coatings, gas-turbine blades

DOI:  https://doi.org/10.15407/nnn.23.01.0255

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