Crystal structure of lanthanum-silicate co-substituted apatite obtained by the mechanochemical synthesis

S. V. Makarova, N. V. Bulina, M. V. Chaikina, L. A. Solovyov

Результат исследования: Научные публикации в периодических изданияхстатья по материалам конференции

2 Цитирования (Scopus)

Аннотация

This paper presents a structural study of lanthanum-silicate co-substituted apatites synthesized by the mechanochemical method. The compositions of the reaction mixtures were taken such that, theoretically, compounds containing equal concentrations of lanthanum and silicon could be formed. As a high degree of crystallinity is required to carry out the refinement of the crystal structure, the synthesized nanosized co-substituted apatites were annealed at 1200 °C. It was found that, in all annealed samples, the concentration of lanthanum is slightly higher than that of silicon. In the structure of the co-substituted apatites, lanthanum occupies both crystallographic positions of calcium with site 2 preference. It was found that the simultaneous replacement of calcium by lanthanum and phosphate by silicate results in an increase in the thermal stability of the compounds in comparison with unsubstituted hydroxyapatite.

Язык оригиналаанглийский
Страницы (с-по)61-65
Число страниц5
ЖурналMaterials Today: Proceedings
Том12
DOI
СостояниеОпубликовано - 1 янв 2019
Событие5th International Conference on Fundamental Bases of Mechanochemical Technologies (FBMT) - Novosibirsk
Продолжительность: 25 июн 201828 июн 2018

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