EIS tests of electrochemical behaviour of Ti6Al4V and Ti6Al7Nb alloys

• Autorzy: Baron A. , Simka W. , Chrzanowski W.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This study has been undertaken in order to establish the influence of parameters of the electrochemical treatment of Ti-alloys on their electrochemical behaviour in Tyrod solution. Design/methodology/approach: Surface of the Ti-alloys: Ti6Al4V and Ti6Al7Nb in the form of a rod submitted to grounding, electropolishing and anodic passivation. Electrochemical investigations were carried out by means of the electrochemical impedance spectroscopy method. Scope of this paper includes analysis of the impedance spectra based on Bode plot. Findings: Prolongation time of anodic passivation to 60 minutes caused formation of a two - layer model consisting of an inner layer which is compact and the barrier type, and outer layer which is porous. Research limitations/implications: Obtained results are the basis for the optimization of anodic passivation parameters of the Ti alloys as a metallic biomaterial. The future research should be focused on selected more suitable parameters of the electrochemical impedance spectroscopy test to better describe process on the solid/liquid interface. Practical implications: It has been found that a good resistance to corrosion and homogeneous oxide layer on the Ti6Al4V and Ti6Al7Nb alloys surface can be achieved due to the application of electrolytic polishing of these alloys in a special bath and anodic passivation in sulphuric acid (VI), phosphoric acid (V) and inorganic salts. Originality/value: Results of the experiments presents the influence of various conditions of anodic passivation of the surface of the Ti6Al4V and Ti6Al7Nb alloy. In this cases, when the surface roughness plays important role, this method can be applied in treatment of the material intended for medical applications especially.

Słowa kluczowe

EN

metallic alloys; biomaterials; anodic passivation; electrochemical impedance spectroscopy; EIS

PL

stopy metaliczne; biomateriały; pasywacja anodowa; elektrochemiczna spektroskopia impedancyjna; EIS

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 21, nr 1
• Strony: 23--26
• Opis fizyczny: Bibliogr. 22 poz., rys.

Twórcy

autor

Baron A.

autor

Simka W.

autor

Chrzanowski W.

• Division of Nanocrystalline and Functional Materials and Sustainable Pro-ecological Technologies, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18 a, 44-100 Gliwice, Poland,

Bibliografia

• [1] W. Chrzanowski, J. Szewczenko, J. Tyrlik-Held, J. Marciniak, J. Zak, Influence of the anodic oxidation on the physicochemical properties of the Ti6Al4V ELI alloy, Journal of Materials Processing Technology, 162-163 (2005) 163 -168.
• [2] W. Chrzanowski, J. Szewczenko, J. Tyrlik-Held, J. Żak, Influence of the anodic oxidation on the physicochemical properties of the Ti6Al4V ELI alloy, Proceedings of Achievements in Mechanical and Materials Engineering AMME (2005) 72-76.
• [3] Z. Paszenda, J. Pyrlik-Held, G. Nawrat, J. Zak, K. Wilczek: Usefulness of passive-carbon layer for implants applied in interventional cardiology, Journal of Materials Processing Technology 157-158 (2004) 399-404.
• [4] E. Mahé, D. Devilliers, Surface modification of titanium substrates for the preparation of noble metal coated anodes. Electrochimica Acta. 46 (2000) 629 – 636.
• [5] S. Barison, S. Cattarin, S. Daolio, M. Musiani, A. Tuissi, Characterisation of surface oxidation of nickel-titanium alloy by ion-beam and electrochemical techniques Electrochimica Acta. 50 (2004) 11-18.
• [6] T. Duerig, A. Pelton, D. Stöckel. Overview of nitinol medical applications, Materials Science and Engineering A, 273-275 (l999) 149-160.
• [7] G. Nawrat. W. Simka. L. Nieużyła, I. Zdziech, The effect of modification of the titanium implant's passive layer one the corrosion resistance of implants, Chemical Industry, 85 (2006) 1204-1207.
• [8] A. Krauze, A. Ziębowicz, J. Marciniak, Corrosion resistance of intramedullary nails used in elastic osteosynthesis of children, Journal of Materials Processing Technology, 162-163(2005) 209-214.
• [9] A. Baron, W. Simka, G. Nawrat, D. Szewieczek, A. Krzyżak, Influence of electrolytic polishing on electrochemical behavior of austenitic steel, Journal of Achievements in Materials and Manufacturing Engineering, 18 (2006) 55 - 58.
• [10] M. Kaczmarek, W. Simka, A. Baron, J. Szewczenko, J. Marciniak, Electrochemical behaviour of Ni-Ti alloy after surface modification, Journal of Achievements in Materials and Manufacturing Engineering, 18 (2006) 111-114.
• [11] W. Chrzanowski, Corrosion behavior of Ti6Al7Nb alloy after different surface treatments, Journal of Achievements in Materials and Manufacturing Engineering, 18 (2006) 67 - 70.
• [12] W. Chrzanowski, J.Marciniak, L.F. Ciupik, G. Nawrat, Evaluation of the usefulness of electrochemical treatments for spine implants surface modification, Engineering of Biomaterials, 46 (2005) 18-21.
• [13] ISO 5832-3: Implants for Surgery - Metallic Materials - Part 3: Wrought Titanium 6-Aluminium 4-Vanadium Alloy.
• [14] ASTM F1295: Standard Specification for Wrought Titanium-6 Aluminum-7 Niobium Alloy for Surgical Implant Applications (UNS R56700).
• [15] E. Krasicka-Cydzik, J. Głazowska, A. Kierzkowska, M. Michalski, Properties of surface film anodic passivated Ti in a fosforic aide, Titanium and its alloys, VIII all -Polish conference, Warszawa-Serok (2005) 143-150.
• [16] M. Metikos-Huković,A. Kwokal, J. Pilijac, The influence of niobum and vanadium on passivity of titanium-based implants in physiological solution hydroxide, Corrosion Science no. 46 (2004) 3765-3775.
• [17] R. Wen-Wei Hsu, Ch. Yang, Ch. Huang, Y.Chen, Electrochemical corrosion properties of Ti6Al4V implant alloy in the biological environment, Materials Science and Engineering no. 380 (2004) 100-109.
• [18] J.C. Lavos-valereto, S. Wolynec, J. Ramires, A.C. Guastaldi, J. Costa, Electrochemical impedance spectroscopy characterization of passive film formed on implant Ti6Al7Nb alloy in Hank's solution, Journal of Materials science, Materials in Medicine no. 15 (2004) 55-59.
• [19] N. Ibris, J.C. Mirza Rosca, EIS study of Ti and its alloys in biological media, Journal of Electroanalytical Chemistry, no. 526 (2002) 53-62.
• [20] R.M. Souto, M.M. Laz, R.L. Reis, Degradation characteristics of chydroxyapatite coatings on orthopaedic TiAlV in simulated physiological media investigated by electrochemical impedance spectroscopy, Biomaterials, nr 24 (2003) 4213-4221.
• [21] M. Metikos-Hukovic, E. Tkalcec , A. Kwokal, J. Piljaca, An in vitro study of Ti and Ti-alloys coated with sol-gel derived hydroxyapatite coatings Surface and Coatings Technology 165 (2003) 40-50.
• [22] F.T. Cheng, P. Shia H.C. Manc, A preliminary study of Ti02 deposition on NiTi by a hydrothermal method, Surface & Coatings Technology 187 (2004) 26- 32.