The investigation of structural and adhesion properties of B4C and TiO2 doped composite coatings grown on Al2024 alloy by MAO method

Pure aluminum and its alloys are engineering materials used in fields such as automotive, aerospace industry, marine applications and sports equipment due to their properties such as high specific strength and low density. On the other hand, the poor corrosion and wear properties in aggressive environments restrict the use of these alloys in specific areas. In this study, it was aimed to improve the surface properties of aluminum alloys and the MAO method, which is a surface improvement technique, was used. The MAO method is an electrochemical surface improvement and/or enhancement technique. With this method, coatings with high wear and corrosion resistance are obtained compared to the substrate material. In the literature, in studies on enlarged coatings on Al 2024 alloy, it has been observed that studies on the effect of composite coatings enlarged by the addition of B_4C, and TiO_2 on structural and adhesion properties are limited. In this context, the microstructure, phase structure and chemical composition of the composite coatings enlarged by the addition of B_4C and TiO_2will be determined by Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Energy Distribution X-ray Spectroscopy (EDS), respectively. The adhesion property of these coatings with the substrate material will also be determined by the Scratch Tester. In this context, by examining the effect of two different additives participating in the basic electrolyte created on the structural and adhesion properties of the coating, it was aimed to establish a relationship between the composite Decking formed on the substrate material surface.