Preparation of calcium polyphosphate powder containing amorphous carbon

Lomonosov Moscow State University, 119991, Russia, Moscow Leninskie Gory, 1

E-mail: t3470641@yandex.ru

Manuscript received online 20 October 2020, revised and accepted 31 October 2020

Uniform dark grey colored powders of β-calcium polyphosphate β-Ca(PO₃ )₂ with fine particles (2–4ṷm) modified with amorphous carbon were prepared using heat treatment of monocalcium phosphate monohydrate Ca(H₂ PO₄ )₂ ^.H₂O after treatment in water solution of lactic acid CH₃ CHOHCOOH under mechanical activation using planetary mill. Prepeared dark grey coloured powders of calcium polyphosphate can be used as a multifunctional additive in technology of porous calcium phosphate ceramics using stereolithographic printing as a molding method of semi-finished items.