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Advanced nanocomposites for high temperature aero-engine/turbine components
by Mohammad Sakhawat Hussain, Salah Al-Swailem, Ahmed Hala
International Journal of Nanomanufacturing (IJNM), Vol. 4, No. 1/2/3/4, 2009
Abstract: This paper provides a report on the research and development work contributing to the co-deposition technique used in the production of nanocomposite coatings by embedding sub-micron (nano-sized) particles into a nanometal matrix by electrodeposition. Electrolytic co-deposition is a technique used to produce composites by embedding small and large particles into the metal matrix during plating; this allows co-deposition of particles with improved properties and is extremely cost-effective. The resistance of a coating to high temperature oxidation and corrosion depends on its structure and composition; also on its interaction with the metal matrix and the corrosion environment. The nanoparticles are expected to pin the grain boundaries and prevent grain growth at high temperatures, e.g., 1,400°C for Ni turbine blades. The electrolytic composites were characterised using SEM. Industrial gas turbine blade (aerospace) has been successfully coated with these nanocomposites as overlay coatings. The focus of this study is primarily in the application of nanocomposites in industrial turbines/aero-engine components and power generation industry. The current state of knowledge of nanocomposite production is presented.

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