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Journal of Chemistry
Volume 2016, Article ID 9520972, 9 pages
http://dx.doi.org/10.1155/2016/9520972
Research Article

Electrochemical Characterization of a New Biodegradable FeMnSi Alloy Coated with Hydroxyapatite-Zirconia by PLD Technique

1Faculty of Materials Science and Engineering, “Gheorghe Asachi” Technical University of Iaşi, Prof. Dr. Docent Dimitrie Mangeron Street No. 41, 700050 Iaşi, Romania
2Faculty of Horticulture, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, 3 M. Sadoveanu Alley, 700490 Iaşi, Romania
3Faculty of Physics, “Alexandru Ioan Cuza” University, Bulevardul Carol I, No. 11, 700506 Iaşi, Romania
4Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iaşi, 73 Prof. Dr. Docent Dimitrie Mangeron Street, 700050 Iaşi, Romania

Received 11 November 2015; Revised 14 January 2016; Accepted 31 January 2016

Academic Editor: Pietro Cavallotti

Copyright © 2016 Nicanor Cimpoeşu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Biodegradable alloys are very attractive biomaterials. Electrochemical impedance spectroscopy (EIS) and linear potentiodynamic polarization (LPP) techniques were used for the study of the electrochemical behavior of uncoated FeMnSi and coated FeMnSi with hydroxyapatite + zirconia (HA-ZrO2) through pulsed laser deposition (PLD) technique. Experiments were carried out using Hank’s balanced salt solution (HBSS). It has been shown that in HBSS the impedance for uncoated FeMnSi was mainly characterized by one capacitive effect, which related to the alloy charge transfer control. The charge transfer resistance increases for HA-ZrO2-coated FeMnSi alloy. The equivalent circuits simulating the electrochemical behavior of both uncoated and HA-ZrO2-coated FeMnSi alloys in HBSS were proposed. From LPP the corrosion resistance was evaluated by means of the zero current potential (ZCP) and corrosion current density (). The surface morphology of both uncoated and HA-coated FeMnSi alloys in HBSS obtained after LPP was studied using scanning electron microscopy (SEM).