Morphology of hydroxyapatite coatings formed on VТ1-0 titanium by combined treatment

Keywords

titanium VT1-0, nitriding, plasma-electrolytic oxidation, potassium hydroxide, hydroxyapatite.

Cite as

Tkachuk O. V., Proskurnyak R. V., and Holovchuk M. Ya. Morphology of hydroxyapatite coatings formed on VТ1-0 titanium by combined treatment. Physico¬chemical Mechanics of Materials. 2022. 58(1), 071-074.

Abstract

We study the process of formation of hydroxyapatite coatings on the surface of commercially pure VT1-0 titanium with preliminarily formed nitride layers by the method of plasma-electrolytic oxidation in an alkaline electrolyte (hydroxyapatite + 1 M potassium hydroxide) under a voltage of 160 V with a deposition time of 1 min. It is established that hydroxyapatite with porous structure is formed more rapidly on the nitride layer with greater number of vacancies in the nonmetallic sublattice of titanium mononitride (TiN_0.69) than in the presence of smaller number of vacancies (TiN_0.81). It was discovered that, for the hydroxyapatite coating, the Ca/P ratio decreases from 1.62 to 0.96.

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