Porous Biocoatings Based on Diatomite with Incorporated ZrO2 Particles for Biodegradable Magnesium Implants.
J Funct Biomater
; 14(5)2023 Apr 24.
Article
em En
| MEDLINE
| ID: mdl-37233351
ABSTRACT
In the present work, the surface of a biodegradable Mg alloy was modified to create porous diatomite biocoatings using the method of micro-arc oxidation. The coatings were applied at process voltages in the range of 350-500 V. We have studied the influence of the addition of ZrO2 microparticles on the structure and properties of diatomite-based protective coatings for Mg implants. The structure and properties of the resulting coatings were examined using a number of research methods. It was found that the coatings have a porous structure and contain ZrO2 particles. The coatings were mostly characterized by pores less than 1 µm in size. However, as the voltage of the MAO process increases, the number of larger pores (5-10 µm in size) also increases. However, the porosity of the coatings varied insignificantly and amounted to 5 ± 1%. It has been revealed that the incorporation of ZrO2 particles substantially affects the properties of diatomite-based coatings. The adhesive strength of the coatings has increased by approximately 30%, and the corrosion resistance has increased by two orders of magnitude compared to the coatings without zirconia particles.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
J Funct Biomater
Ano de publicação:
2023
Tipo de documento:
Article