Results in Surfaces and Interfaces, cilt.18, 2025 (Scopus)
In this study, samples with different surface roughness values were used to improve the mechanical and structural properties of pure titanium. Pure titanium samples measuring 15 × 15 × 3 mm³ were prepared by grinding with 400, 800, and 1200 grit sandpapers for experimental studies. These samples were then subjected to anodization in a 1.5M H2SO4/0.3M H3PO4 solution at 18 V potential for 30 min. Surface characterization was performed with surface hardness, microstructural analysis, and wear tests. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses were used to examine the structural properties and morphology of the coatings. The results obtained showed that the grinding process performed before anodization has a significant effect on the coating thickness and surface roughness. In samples ground with coarser sandpapers (400 grit), thicker oxide layers were formed, while smoother and thinner coatings were obtained in samples processed with finer sandpapers (1200 grit). Wear tests showed that coatings with smoother surfaces had increased wear resistance. It was determined that as the grit size of the sandpapers used in surface preparation became finer, the hardness values of the coated surfaces decreased. The hardness values of surfaces prepared with 400, 800, and 1200 SiC sandpapers and anodically coated were measured as 275 ± 8 HV0.1, 253 ± 8 HV0.1, and 223 ± 7 HV0.1, respectively.