Abstract:
The paper presents study of a new approach to manufacturing carrier implants with a combination of
bioactivity, biocompatibility, and mechanical properties, composite powders of hydroxyapatite and titanium
with a mass content of 50:50 % when sprayed by gas detonation spraying. Experimental studies of the surface
morphology and cross-section microstructure, phase composition and mechanical properties of HATi composite
coatings are obtained. The experimental results showed that the cross-section microstructures of HATi
composite coatings are typical plate structures comprising curved strips formed by well-deformed and oxidized
Ti plates and limited deformed HA plates. Composite coatings’ morphology and phase states were studied
using scanning electron microscopy and X-ray diffractometry. It was found that the deprived coatings
mainly consist of the phases HA, Ti and TiO. The elemental composition study results designated that the
atomic ratio of calcium and phosphorus in the obtained coatings is Ca/P ~ 1.64, which is close to the value of
the initial powder — Ca/P ~ 1.67. This indicates a limited change in the chemical composition during the
coating formation.
