Comparative study of the structure, properties, and corrosion behavior of Sr-containing biocoatings on Mg0.8Ca

Mariya B. Sedelnikova, Yurii P. Sharkeev, Tatiana V. Tolkacheva, Margarita A. Khimich, Olga V. Bakina, Alla N. Fomenko, Aigerim A. Kazakbaeva, Inna V. Fadeeva, Vladimir S. Egorkin, Sergey V. Gnedenkov, Juergen Schmidt, Kateryna Loza, Oleg Prymak, Matthias Epple

Результат исследований: Материалы для журналаСтатья

Аннотация

A comparative analysis of the structure, properties and the corrosion behavior of the micro-arc coatings based on Sr-substituted hydroxyapatite (Sr-HA) and Sr-substituted tricalcium phosphate (Sr-TCP) deposited on Mg0.8Ca alloy substrates was performed. The current density during the formation of the Sr-HA coatings was higher than that for the Sr-TCP coatings. As a result, the Sr-HA coatings were thicker and had a greater surface roughness Ra than the Sr-TCP coatings. In addition, pore sizes of the Sr-HA were almost two times larger. The ratio (Ca + Sr + Mg)/P were equal 1.64 and 1.47 for Sr-HA and Sr-TCP coatings, respectively. Thus, it can be assumed that the composition of Sr-HA and Sr-TCP coatings was predominantly presented by (Sr, Mg)-substituted hydroxyapatite and (Sr, Mg)-substituted tricalcium phosphate. However, the average content of Sr was approximately the same for both types of the coatings and was equal to 1.8 at.%. The Sr-HA coatings were less soluble and had higher corrosion resistance than the Sr-TCP coatings. Cytotoxic tests in vitro demonstrated a higher cell viability after cultivation with extracts of the Sr-HA coatings.

Язык оригиналаАнглийский
Номер статьи1942
ЖурналMaterials
Том13
Номер выпуска8
DOI
СостояниеОпубликовано - 1 апр 2020

ASJC Scopus subject areas

  • Materials Science(all)

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  • Цитировать

    Sedelnikova, M. B., Sharkeev, Y. P., Tolkacheva, T. V., Khimich, M. A., Bakina, O. V., Fomenko, A. N., Kazakbaeva, A. A., Fadeeva, I. V., Egorkin, V. S., Gnedenkov, S. V., Schmidt, J., Loza, K., Prymak, O., & Epple, M. (2020). Comparative study of the structure, properties, and corrosion behavior of Sr-containing biocoatings on Mg0.8Ca. Materials, 13(8), [1942]. https://doi.org/10.3390/MA13081942