NDLI: The Influence of the Electrolyte Nature and PEO Process Parameters on Properties of Anodized Ti-15Mo Alloy Intended for Biomedical Applications

Content Provider	Directory of Open Access Journals (DOAJ)
Author	Oksana Banakh Lyubov Snizhko Tony Journot Pierre-Antoine Gay Catherine Csefalvay Oleg Kalinichenko Oleg Girin Laurine Marger Stéphane Durual
Abstract	Plasma electrolytic oxidation (PEO) of Ti-15Mo alloys conducted in electrolytes containing Ca and P compounds can be an efficient process with which to obtain bioactive coatings. This paper reports on the influence of the nature of the electrolyte, its concentration, and PEO process parameters on the properties of anodized layers on Ti-15Mo. A wide range of Ca- and P-containing alkaline and acidic solutions was employed to incorporate Ca and P ions into the anodized layer. The efficiency of the incorporation was evaluated by the Ca/P ratio in the coating as compared to that in the electrolyte. It was found that alkaline solutions are not suitable electrolytes for the formation of good quality, uniform PEO coatings. Only acidic electrolytes are appropriate for obtaining well-adherent homogeneous layers on Ti-15Mo. However, the maximum Ca/P ratios reached in the coatings were rather low (close to 1). The variation of electrical signal (negative-to-positive current ratio, frequency) and time of electrolysis do not result in a substantial change of this value. The processing time, however, did influence the coating thickness. Despite their low Ca/P ratio, the anodized layers demonstrate good biological activity, comparable to pure microrough titanium.
e-ISSN	20754701
DOI	10.3390/met8050370
Journal	Metals
Issue Number	5
Volume Number	8
Language	English
Publisher	MDPI AG
Publisher Date	2018-01-01
Publisher Place	Switzerland
Access Restriction	Open
Subject Keyword	Mining Engineering. Metallurgy Beta-titanium Alloys Ti-15mo Biocompatible Coatings Plasma Electrolytic Oxidation
Content Type	Text
Resource Type	Article

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