The work is aimed at developing a method for forming an octacalcium phosphate (OCP, Ca8H2(PO4)6·5H2O) coating on the surface of ?-tricalcium phosphate (TCP, Ca3(PO4)2) ceramics. The coatings were formed by keeping the ceramics in buffer solutions with the main ionic composition of CH3COO– and Na+ with varying conditions (time, pH value and temperature). Crystallization of the OCP coating occurred sequentially by partial dissolution of the surface layers of TCP ceramics and crystallization of the intermediate phase of dicalcium phosphate dihydrate (DCPD, CaHPO4·2H2O). The effect of the buffer solution composition and the process conditions (time, pH value and temperature) on the phase composition, morphology and thickness of the coatings was studied.
Artem A. Kotyakov – junior researcher, Laboratory of Ceramic Composite Materials (No. 20), Baykov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (IMET RAS), Moscow, Russia
Alexander Yu. Fedotov – PhD, leading researcher, Laboratory of Ceramic Composite Materials (No. 20), Baykov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (IMET RAS), Moscow, Russia
Natalia V. Petrakova – PhD, senior researcher, Laboratory of Ceramic Composite Materials (No. 20), Baykov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (IMET RAS), Moscow, Russia
Vladimir S. Komlev – Corresponding Member of the Russian Academy of Sciences, Professor of the Russian Academy of Sciences, director of the Baykov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (IMET RAS), Moscow, Russia
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DOI: 10.14489/glc.2025.06.pp.024-031
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