| 摘要 |
FIELD: chemistry.SUBSTANCE: method involves mixing phosphates, calcium and silicon compounds, milling and mechanochemical synthesis, wherein the starting components used are disubstituted anhydrous calcium phosphate, annealed calcium oxide and amorphous hydrated silicon oxide with water content of less than 0.5 mol, with specific surface area of 200-450 m/g in amount of not more than 1.2 mol silicon per elementary cell of hydroxylapatite; mechanochemical solid-phase synthesis is carried out in high-energy planetary mills with drum rotation speed of 1200-1800 rpm for 12-30 minutes. Calcium oxide is annealed preferably at temperature of 900°C for 5 hours.EFFECT: invention enables to obtain a powdered nanocrystalline single-phase product for 30 minutes of solid-phase mechanical activation.2 cl, 1 tbl, 6 ex, 7 dwg |
