Development of plasma electrolytic oxidation for improved Ti6Al4V biomaterial surface properties

Abstract

In the paper, the scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and Xray photoelectron spectroscopy (XPS) results of the Ti6Al4V alloy treated by a novel plasma electrolytic oxidation (PEO) (micro arc oxidation) in the electrolyte containing concentrated phosphoric acid and copper nitrate are presented. The PEO treatment was performed at the voltage of 450±10 V. The main problem to solve under the experiments was to obtain a porous surface layer composed mainly of titanium phosphates within the copper ions. The performed study has shown that the amount of copper nitrate in 85 % concentrated phosphoric acid should be not less than 1

Investigation of porous coatings obtained on Ti-Nb-Zr-Sn alloy biomaterial by plasma electrolytic oxidation: characterisation and modelling

“…The results in the present paper are a continuation of our work presented in [10], in which porous and biocompatible coatings obtained on Ti6Al4V alloy biomaterial, enriched in bactericidal copper [33][34][35][36][37][38] and depleted in vanadium and aluminium ions, were described. In this article, the authors present the PEO coatings obtained on another very popular alloy, i.e.…”

“…Plasma electrolytic oxidation (PEO), known also as micro arc oxidation (MAO) or spark anodisation (SA) [1][2][3][4][5][6][7][8][9][10], is very often used for formation of microcoatings (about 10 μm thick) on metals (titanium, niobium, zirconium, tantalum) [1][2][3][4][5] and their alloys [5][6][7][8][9][10], with nano-and micro-pores. Other much thinner nano-layers (about 5-10 nm) can be obtained by electropolishing (EP) [11][12][13][14][15], magnetoelectropolishing ( M E P ) [ 1 6 -2 3 ] a n d a h i g h -c u r r e n t d e n s i t y electropolishing (HDEP) [24,25], which may be used for surface preparation of biomaterials for PEO oxidation.…”

SEM, EDS and XPS analysis of nanostructured coating formed on NiTi biomaterial alloy by Plasma Electrolytic Oxidation (PEO)

“…9, it is possible to note that the binding energies of Ti 2p 3/2 and Ti 2p 1/2 , are equaling to 460,4 eV and 466 eV, respectively. Those binding energies suggest in fact the presence of titanium on the fourth stage of oxidation (Ti 4+ ) in the surface layer [18,19]. On the basis of P 2p spectrum, where the maximum is observed at 134,1 eV, one can assume the presence of titanium and/or copper and/or nickel phosphates in the PEO coating.…”

SEM and EDS Characterization of Porous Coatings Obtained On Titaniumby Plasma Electrolytic Oxidation in Electrolyte Containing Concentrated Phosphoric Acid with Zinc Nitrate

“…as a part of automobile catalysts and/or to biomaterials. In case of biomaterials finishing, it is important to create the porous surface enriched in antibacterial copper [43][44][45][46][47][48][49][50][51][52][53][54][55][56] or zinc. Zinc enrichment of porous PEO coatings is the main subject of the present paper.…”

“…Zinc enrichment of porous PEO coatings is the main subject of the present paper. In addition, it is also desirable to form the surface with the least amount of vanadium, aluminum, and nickel, which are toxic to the human body [41,43,53].…”