Sonmez, S.Aksakal, B.Dikici, B.2025-05-102025-05-1020120928-07071573-484610.1007/s10971-012-2813-82-s2.0-84875452248https://doi.org/10.1007/s10971-012-2813-8https://hdl.handle.net/20.500.14720/1636Dikici, Burak/0000-0002-7249-923X; Aksakal, B/0009-0007-7644-5785; Aksakal, Bunyamin/0000-0003-4844-9387Micron and nano-scale hydroxyapatite (HA) were coated successfully on AA6061-T4 substrates by sol-gel method. Besides, the effects of coating thickness on adhesion strength and corrosion behaviour of the coatings were studied. Corrosion resistance was measured by potentiodynamic polarization test using a potentiostat under in vitro conditions. The coatings before and after corrosion tests were characterized by adhesion tests, a scanning electron microscopy attached with EDS and X-ray diffraction analysis. The results revealed that all the coatings exhibit a passive behaviour in Ringer's solution. Specimens coated with nano-scale HA had the higher corrosion resistance than micro-scale coatings. The highest corrosion resistance appeared to be for the similar to 30 mu m nano-scale HA coated substrates. However, for micro-scale HA coatings, the highest adhesion resistance was obtained at similar to 30 mu m film thickness.eninfo:eu-repo/semantics/closedAccessHydroxyapatiteA6061-T4Sol-GelCorrosionArticle633Q1Q3510518WOS:000310162700025