Physical and chemical features of hydrophilic microarc biocoatings based on substituted hydroxyapatite

The physical and chemical properties as topography, morphology, chemical composition and wettability of microarc calcium phosphate coatings based on Zn- and Cu- substituted hydroxyapatite on the Ti-40mas.%Nb alloy surface has been investigated. It have been found that calcium phosphate coatings on Ti-40mas.%Nb alloy produced under 200 V have X-ray amorphous state and as consequence high rate of dissolution. The phase composition of the coatings produced under 300 V is presented the following phases: CaHPO4,beta-Ca[2]P[2]O[7], Ca[2]Nb[2]O[7], NbO[2], Nb[2]O[5], TiO[2]. It has been shown that the biocoatings are very hydrophilic.