OBTAINING OF HYDROXYAPATITE COATINGS ON A TITANIUM SUBSTRATE BY DETONATION-GAS SPRAYING

Abstract

The article considers research results of the formation process of a hydroxyapatite coating on a titanium substrate during detonation spraying. Powders for sputtering and obtained coatings of hydroxyapatite were studied by Raman spectroscopy and X-ray structural analysis. It was determined that the appearance of α-tricalcium phosphatephase is characteristic of a pure hydroxyapatite coating obtained by detonation spraying. Still, the hydroxyapatite phase is retained in the coating composition. Results obtained by Raman spectroscopy indicate that hydroxyapatite is the main phase in coatings. The morphology of the sprayed coatings was characterized using scanning electron microscopy, and the coatings elemental composition analysis was obtained using an energy-dispersive spectrometer detector. Energydispersive spectrometer analysis showed that the elemental composition of the obtained coatings is similar to the elemental composition of the initial powder, which is very important for preserving the coatings services life.