Effect of heat treatment on the phases, pore size, roughness, wettability, hardness, adhesion, and wear of Ti-25Ta MAO coatings for use as biomaterials

Kuroda, Pedro Akira Bazaglia; de Mattos, Felype Narciso; Grandini, Carlos Roberto; Afonso, Conrado Ramos Moreira

doi:10.1007/s10853-023-08979-2

Cited by 6 publications

(1 citation statement)

References 76 publications

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“…However, all values obtained are not very different from the values found in the literature for porous TiO 2 MAO coatings on Ti alloys (1.4 GPa [ 41 ], 2.2 GPa [ 65 ], 2.9 GPa [ 66 ], and 3.9 GPa [ 33 ]). The coatings’ higher hardness values are important because they provide greater strength to the material and protect the substrate from wear [ 67 , 68 ].…”

Section: Resultsmentioning

confidence: 99%

Antimicrobial Cu-Doped TiO2 Coatings on the β Ti-30Nb-5Mo Alloy by Micro-Arc Oxidation

Cardoso,

Barbaro,

Kuroda

et al. 2023

Materials

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Among the different surface modification techniques, micro-arc oxidation (MAO) is explored for its ability to enhance the surface properties of Ti alloys by creating a controlled and durable oxide layer. The incorporation of Cu ions during the MAO process introduces additional functionalities to the surface, offering improved corrosion resistance and antimicrobial activity. In this study, the β-metastable Ti-30Nb-5Mo alloy was oxidated through the MAO method to create a Cu-doped TiO2 coating. The quantity of Cu ions in the electrolyte was changed (1.5, 2.5, and 3.5 mMol) to develop coatings with different Cu concentrations. X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron and atomic force microscopies, contact angle, and Vickers microhardness techniques were applied to characterize the deposited coatings. Cu incorporation increased the antimicrobial activity of the coatings, inhibiting the growth of Staphylococcus aureus, Enterococcus faecalis, Pseudomonas aeruginosa bacteria strains, and Candida albicans fungus by approximately 44%, 37%, 19%, and 41%, respectively. Meanwhile, the presence of Cu did not inhibit the growth of Escherichia coli. The hardness of all the deposited coatings was between 4 and 5 GPa. All the coatings were non-cytotoxic for adipose tissue-derived mesenchymal stem cells (AMSC), promoting approximately 90% of cell growth and not affecting the AMSC differentiation into the osteogenic lineage.

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