Abstract
Calcium phosphate coatings on the VT1-0 titanium substrate were obtained by high-frequency magnetron sputtering technique. Surface morphology, phase and elemental composition of the coatings were investigated by scanning electron microscopy, energy dispersive X-ray analysis and infrared spectroscopy. It was found formation of molecular bonds, those depending on the discharge power and isothermal annealing temperature, are typical for hydroxyapatite and accompanied by changes in the phase and elemental composition. Increase of discharge power up to 250 watt provides denser and thick coatings and promotes the formation of amorphous phase in the higher concentration more than 20%. The ratio of the amorphous and crystalline phases determines the long-term strength of the coatings.
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