Funct. Mater. 2026; 32 (1): 61-69.
Surface modification of the cobalt base super alloy using titanium oxide as thermal barrier and study of its efficiency in resisting oxidation and hot corrosion
Department of Physics, College of Science, University of Mosul, Iraq
In this study, the efficiency of the improved super alloy on cobalt base (F-75) by modifying the surface components of the alloy using the diffusion coating method in aluminum with presence of the thermal barrier of titanium oxide (TiO2)at 1070 ° C and in a vacuum atmosphere to avoid oxidation. The periodic oxidation process and a hot corrosion process was performed on the samples at a temperature of (1100°C) with the presence of sodium sulfate (Na2SO4) and sodium chloride (NaCl), to determine their behavior on the one hand, and to study the structural composition of the samples through a set of technical tests, including optical microscopy,x-ray diffraction (XRD(, scanning electron microscope (SEM) as well as quantitative and qualitative examinations through the energy dispersive spectroscopy (EDS), specifications for the prepared alloys
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