Characteristics of multi-layer coatings synthesized on Ti6Al4V alloy by micro-arc oxidation in silver nitrate added electrolytes

Faiz Muhaffel, Grzegorz Cempura, Meryem Menekse, Aleksandra Czyrska-Filemonowicz, Nevin Karaguler, Huseyin Cimenoglu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Multi-layer coatings (composed of outer hydroxyapatite and inner titania layers) have been synthesized on Ti6Al4V alloy for biomedical applications by employing micro-arc oxidation at positive and negative voltages of 400 and 80, respectively. Addition of silver nitrate (at concentrations of 0.1 g/L and 0.4 g/L) into the calcium acetate hydrate and disodium hydrogen phosphate anhydrous containing base electrolyte provided an enhancement in bio- and antibacterial activities of the synthesized coating, while imposing precipitation of silver nanoparticles on the hydroxyapatite layer. It is finally concluded that addition of 0.1 g/L AgNO3 into the base electrolyte is promising for MAO process of titanium-based implants, when the structural characteristics and risk of cytotoxicity are of concern for the synthesized multi-layer coatings.

Original languageEnglish
Pages (from-to)308-315
Number of pages8
JournalSurface and Coatings Technology
Volume307
DOIs
Publication statusPublished - 15 Dec 2016

Bibliographical note

Publisher Copyright:
© 2016

Funding

The authors gratefully acknowledge the financial support of Istanbul Technical University (ITU) through ITU-BAP Grant #33550 and European Cooperation in Science and Technology (COST) Project #MP1005 .

FundersFunder number
ITU-BAP33550
European Cooperation in Science and Technology
Istanbul Teknik Üniversitesi

    Keywords

    • Antibacterial
    • Hydroxyapatite
    • Micro-arc oxidation
    • Multi-layer coating
    • Silver
    • Ti6Al4V
    • Titania

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