FIELD: inorganic chemistry.
SUBSTANCE: invention relates to inorganic chemistry and concerns a method for producing biocompatible bismuth-apatites of the composition Ca10-2xBixNax(PO4)6F2, where x=1, 2, 3, 4, which can be used in medicine, including dentistry, for the production of medical ceramic materials that stimulate the restoration of bone defects, as well as providing protection against the development of bacterial infections. The method includes placing a stoichiometric mixture of four-water calcium nitrate, five-water bismuth nitrate, sodium nitrate, diammonium hydrophosphate and ammonium fluoride into an alundum crucible, after which the crucible is placed in a muffle furnace with a closed spiral and heated to a temperature of 300-350°C at a rate of 3-5 deg/min until the end of the dehydration of the initial crystalline hydrates and thermal decomposition of the reagents used. Then the crucible is cooled to room temperature and the mixture is dispersed in an agate mortar using ethanol to create additional disjoining pressure. The resulting monodisperse powder is placed in a crucible and calcined to 600-670°C at a rate of 5-7 deg/min with dispersion every hour for 10 minutes. Next, the mixture is calcined in an alundum crucible at a temperature of 950-1100°C for 7-9 hours.
EFFECT: simplification of the manufacture of bismuth apatite and reduction of production time.
3 cl, 2 dwg, 1 tbl, 2 ex
