Powders Synthesized from Solutions of Calcium Chloride, Sodium Hydrogen Phosphate, and Sodium Sulfate for Bioceramics Production

Fine powders of brushite CaHPO4·2H2O, ardealite Ca(HPO4)x(SO4)1−x·2H2O (Ca(HPO4)0.5(SO4)0.5·2H2O), and calcium sulfate dihydrate CaSO4·2H2O—all containing sodium chloride NaCl as a reaction by-product—were synthesized from 0.5 M aqueous solution CaCl2, hydrophosphate Na2HPO4 and/or Na2SO4. Powder (Ca(HPO4)0.5(SO4)0.5·2H2O) was by precipitation CaCl2 mixed-anionic simultaneously the hydrogen phosphate anion HPO42− (Na2HPO4) SO42− (Na2SO4). Sodium NaCl, presenting in compacts based on CaSO4·2H2O, responsible for both low-temperature melt formation creation phase composition ceramics. Heterophase interaction components led to resulting ceramic samples during heating, including chlorapatite Ca5(PO4)3Cl ardealite. The ceramics powder CaHPO4·2H2O by-product after firing at 800–1000 °C included β-Ca2P2O7, Ca5(PO4)3Cl. 800 900 CaSO4, Ca5(PO4)3Cl; 1000 °C, it includedCaSO4, Ca3(PO4)2/Ca10Na(PO4)7, 1100 CaSO4 CaSO4·2H2O 800–1100 predominant phase. all under investigation consisted biocompatible crystalline phases with different abilities biodegrade. For this reason, created can be recommended testing materials treatment bone defects using regenerative medicine methods.