Influence of Anodic Oxidation on the Polarization Resistance of Ti6Al4V Alloy after Shot Peening

Abstract:

Ti6Al4V titanium alloy is widely used for industrial and medical applications. Several techniques of surface treatment are used to improve their mechanical, fatigue or corrosion properties like shot peening or anodic oxidation. The effect of these techniques combination on corrosion resistance of the base material was examined in this study. For this purpose, electrochemical impedance spectroscopy tests were performed in 0.1M NaCl solution. Shot peening was carried out using ceramic balls Z850 (Φ 850 μm) at the Almen intensity of 0.13 mmA. Anodic oxidation process was performed on ground and shot peened surface in 7% H₂SO₄ acid solution at constant used voltage of 65 V. Significant improvement of corrosion resistance by the surface treatment of Ti6Al4V alloy by shot peening with following anodic oxidation was observed however the improvement was lower when compared to surface treated only by anodic oxidation.

• Periodical: Materials Science Forum (Volume 811)
• Pages: 59-62
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.811.59
• Online since: December 2014
• Authors: Filip Pastorek, Branislav Hadzima*, Stanislava Fintová, Mansour Mhaede
• Keywords: Anodic Oxidation, Corrosion, EIS, Shot Peening, Ti6Al4V Alloy

References

[1] E. Vasilescu, P. Drob, D. Raducanu, I. Cinca, D. Mareci, J.M. Calderon Moreno, M. Popa, C. Vasilescu, J.C. Mirza Rosca, Effect of thermo-mechanical processing on the corrosion resistance of Ti6Al4V alloys in biofluids, Corr. Sci. 51 (2009).

DOI: 10.1016/j.corsci.2009.08.014

[2] E. Vermesse, C. Mabru, L. Arurault, Surface integrity after pickling and anodization of Ti–6Al–4V titanium alloy, Appl. Surf. Sci. 285P (2013) 629-637.

DOI: 10.1016/j.apsusc.2013.08.103

[3] M. Janecek, F. Nový, J. Stráský, P. Harcuba, L. Wagner, Fatigue endurance of Ti-6Al-4V alloy with electro-eroded surface for improved bone in-growth, J. of the Mech. Behav. of Biomed. Mater. 4 (2011) 417-422.

DOI: 10.1016/j.jmbbm.2010.12.001

[4] M.R. Garsivaz jazi, M.A. Golozar, K. Raeissi, M. Fazel, Evaluation of corrosion and tribocorrosion of plasma electrolytic oxidation treated Ti–6Al–4V alloy, Surf. & Coat. Technol. 244 (2014) 29-36.

DOI: 10.1016/j.surfcoat.2014.01.042

[5] H. Lukáčová, B. Plešingerová, M. Vojtko, G. Bán, Electrochemical treatment of Ti6Al4V, Acta Metallurgica Slovaca 16 (2010) 186-193.

[6] G.Q. Chen, Y. Jiao, T.Y. Tian, X.H. Zhang, Z.Q. Li, W.L. Zhou, Effect of wet shot peening on Ti−6Al−4V alloy treated by ceramic beads, Trans. Nonferrous Met. Soc. China 24 (2014) 690−696.

DOI: 10.1016/s1003-6326(14)63112-5

[7] B.K.C. Ganesh, W. Sha, N. Ramanaiah, A. Krishnaiah, Effect of shot peening on sliding wear and tensile behavior of titanium implant alloys, Materials and Design 56 (2014) 480–486.

DOI: 10.1016/j.matdes.2013.11.052

[8] D.T. Asquith, A.L. Yerokhin, J.R. Yates, A. Matthews, The effect of combined shot-peening and PEO treatment on the corrosion performance of 2024 Al alloy, Thin Solid Films 516 (2007) 417–421.

DOI: 10.1016/j.tsf.2007.06.166

[9] L. Škublová, B. Hadzima, L. Borbás, M. Vitosová: Mater. Eng. -Mater. Inž. 15(4) (2008) 18-22.

[10] Z.M. Yan, T.W. Guo, H.B. Pan, J.J. Yu, Influences of Electrolyzing Voltage on Chromatics of Anodized Titanium Dentures, Mater. Trans. 43(12) (2002) 3142-3145.

DOI: 10.2320/matertrans.43.3142