This article shows the results of a study on a biocomposite material based on calcium phosphate doped with ZnCl and AgNO3 . Calcium phosphates are mainly used in dentistry and orthopedics due to their excellent biocompatibility, osteoconductive properties and similarity to the inorganic components of human bone. The main objective of the study is to investigate the morphology, elemental and phase composition, and physicochemical properties of the obtained material. The test material is obtained in the form of a suspension and subjected to ultrasonic treatment. The microstructure and phase composition of the obtained biocomposites are studied by SEM, XRD, FTIR methods. It is possible to obtain dicalcium phosphate dihydrate (DCPD) by the presented methods, and the results demonstrate a partial replacement of calcium atoms by zinc atoms. Xray phase analysis shows that Ca(HPO4 ) (H2O)2 phases as well as CaZn2 (PO4 )2 (H2O)2 and AgCl phases were formed during the reaction. Fourier transform infrared spectroscopy revealed that the obtained samples contain the groups HPO4 2 and PO4 3 , with the group PO4 2 replacing the group CO3 2 . The biocomposite materials could be of great interest in the biomedical field, including the development of coatings that prevent or delay the development of bacterial biofilm.

The article provides the results of the preparation of calcium phosphate coatings by plasma electrolytic oxidation. Calcium phosphate coatings are formed on titanium scaffolds with a porous structure. Titanium scaffolds are products of additive manufacturing equipment by selective laser melting. The morphology of the obtained coating, phase and elemental composition are described, the Ca/P ratio of the coating is dete rmined. The surface of the scaffold is porous due to the baking of powder particles during production. XRD analysis shows the presence of calcium phosphate and oxide compounds. The resulting oxide coating is evenly distributed over the porous surface of the scaffold. Titanium, aluminum and vanadium are located in the areas of the coating free of calcium phosphate particles. The average Ca/P ratio for the resulting coating was 2.48. This value is close to the Ca/P ratio in human bone. It is concluded that the use of the PEO method is promising for the manufacture of scaffolds with a porous structure with calcium phosphate coatings for use in traumatology and orthopedics. The use of titanium scaffolds with a porous structure with calcium phosphate coatings will improve the osseointegration of implants and exclude the possibility of implant failure.