Surface Modification and Tribological Performance of Calcium Phosphate Coatings with TiO2 Nanoparticles on VT1-0 Titanium by Micro-Arc Oxidation
Rakhadilov B. Zhassulan A. Ormanbekov K. Shynarbek A. Baizhan D. Aldabergenova T.
November 2024Multidisciplinary Digital Publishing Institute (MDPI)
Crystals
2024#14Issue 11
The continuous development of biomedical materials necessitates exploring new solutions to enhance implant performance. This study investigates the impact of titanium dioxide nanoparticles on calcium phosphate coatings applied to VT1-0 titanium substrates using micro-arc oxidation. Titanium, widely recognized for its excellent mechanical properties and compatibility, serves as an ideal substrate for implants. The coatings were synthesized in an electrolyte with varying titanium dioxide concentrations to examine their influence on surface morphology, wettability, roughness, hardness, and tribological characteristics. Characterization techniques, such as scanning electron microscopy, X-ray diffraction, and profilometry, were employed to analyze the coatings’ structural and mechanical properties. The results demonstrate that increasing titanium dioxide concentrations leads to enhanced uniformity, reduced pore sizes, and higher hardness. Furthermore, the coatings showed improved wear resistance and reductions in friction coefficients at optimal nanoparticle levels. The inclusion of titanium dioxide significantly enhances the mechanical and tribological performance of the calcium phosphate coatings, making them suitable for biomedical applications, especially in implants requiring long-term durability and enhanced compatibility.
coating , micro-arc oxidation , porosity , titanium , tribology , wettability
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