Funct. Mater. 2024; 31 (2): 178-184.
High temperature hot corrosion and oxidation of 733E831 based superalloy with TiO2 thermal barrier coating
Department of Physics, College of Science, University of Mosul, Iraq
The surfaces of turbine blades made of nickel-based alloys were coated with aluminum with thermal barrier titanium oxide (TiO2) at a temperature of 1050 °C. The coatings protect the surfaces of these alloys from oxidation and hot corrosion in the surrounding atmosphere, as well as from sodium sulfate (Na2SO4) dissolved in the fuel. The samples were subjected to periodic oxidation and hot corrosion at a temperature of 1080 °C. The weight gain of samples coated with aluminum as well as the weight loss after oxidation and hot corrosion were calculated. The coating with a thermal barrier (TiO2) shows good stability.
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