The Effects of Silver Ion Implantation on Structural and Morphological Performance of Hydroxyapatite Coatings

K. Suchaneka, D. Sobola, M. Mitura-Nowakb, M. Perzanowskib, M. Marszałekb aInstitute of Physics, Cracow University of Technology, Podchorążych 1, Kraków, 30-084, Poland bThe Institute of Nuclear Physics, Polish Academy of Sciences, E. Radzikowskiego 152, 31-342 Krakow, Poland

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Hydroxyapatite coating composed of hexagonal rods are modified with silver ions to improve their antibacterial activity. The coatings are irradiated at room temperature using 15 keV Ag+ ion source and three different ion doses up to 6×1016 ions/cm2. Morphological and structural changes in the crystal structure of hydroxyapatite are followed as a function of Ag+ ion dose using scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, and the Raman spectroscopy. We observed that implantation did not produce any morphological changes in crystals. Based on the X-ray diffraction data, we show that lattice constant of hydroxyapatite remains unchanged for all samples irrespective of the Ag+ ion dose. However, ion-induced defects formation is evidenced by detailed X-ray diffraction line profile analysis and broadening of the diffraction maxima with increasing Ag+ ion dose.

DOI:10.12693/APhysPolA.137.33 topics: silver ion implantation, hydrothermal synthesis, hydroxyapatite coatings