Evaluation of Corrosion Resistance of Implant-use Ti6Al4V Alloy in Hank Biological Solution in the Presence of Microorganism's Metabolic Product Lactic Acid
Abstract
Titanium alloys such as Ti6Al4V is the most used alloy used as implant for biomedical purposes. The conditions for a biomaterial to be selected for a particular application in the human body is that this should to conforms to the physical, chemical and biological characteristics, more precisely to be biocompatible, biofunctional and not ultimately sterilizable. Ti6Al4V alloy has mechanical properties suitable for many biomedical applications and has excellent corrosion resistance, which depends on the presence of a stable passive oxide film forming on its surface. Our study aims to evaluate the corrosion resistance of Ti6Al4V as a function in time with addition of 5 g/L and 10 g/L Lactic acid in biological solution Hank after exposure at 0 h (at immersion time), after 48 h (from immersion) and 168 h (from immersion). The evaluation of corrosion resistance of Ti6Al4V in Hank biological solution with addition of two concentration of Lactic acid it was done by electrochemical methods in terms of open circuit potential and polarization resistance (Rp). Lactic acid is used in this study because it is a component present in human blood in small quantities and is necessary for the metabolic processes used directly by the heart muscle, brain and nervous system. The increased lactic acid content in muscle appears as weight-bearing exercises.
This is why it is important to know how the presence of lactic acid in larger quantities affects the implants. The study also highlights the importance of using longer testing times and more realistic solutions when testing biomedical materials.
References
[2]. Benea L., Metode avansate de investigare a materialelor, Editura Academica, ISBN 978-606-606-003-5, 2017.
[3]. Simionescu N., Benea L., Dumitrascu V. M., The Synergistic effect of proteins and reactive oxygen species on electrochemical behaviour of 316L stainless steel for biomedical applications, IOP Conf. Ser.: Mater. Sci. Eng. 374 012058, 2018.
[4]. Ravoiu A., Simionescu N., Benea L., Influence of different concentration of hydrogen peroxide on the corrosion behavior of Ti-6Al-4V alloy immersed in physiological solution, IOP Conf. Ser.: Mater. Sci. Eng. 572 012006, 2019.
[5]. Kurz W., Mercier J. P., Zambelli G., Traite des Matériaux. 1. Introduction à la Science des Matériaux, Deuxième Edition, Presses Polytechniques et Universitaires Romandes, Suisse, ISBN: 2-88074-216-1, 1995.
[6]. Thevenot P., Hu W., Tang L., Surface chemistry influences implant biocompatibility, Curr. Top Med. Chem. 8(4) 270, 2008.
[7]. De Avila E., de Molon R., Palomari Spolidorio D., de Assis Mollo Jr. F., Implications of surface and bulk properties of abutment implants and their degradation in the health of periodontal tissue, Materials. 6(12), 5951, 2013.
[8]. Olmedo D. G., Tasat D. R., Duffo G., Guglielmotti M. B., Cabrini R. L., The issue of corrosion in dental implants: A review, Acta Odontol, Latinoam, 22, p. 3-9, 2009.
[9]. Rodrigues D. C., Valderrama P., Wilson T. G., Palmer Jr. K., Thomas A., Sridhar S., Adapalli A., Burbano M., Wadhwani C., Titanium Corrosion Mechanisms in the Oral Environment: A Retrieval Study, Materials, 6, 5258, 2013.
[10]. Eliaz N., Corrosion of metallic biomaterials: A review, Materials, 12(3) 407, 2019.
[11]. Benea L., Mardare Dănăilă E., Bounegru I., Challenges in corrosion protection using vegetable extracts as inhibitors – Electrochemical studies, The Annals of “Dunarea de Jos” University of Galati, Fascicle IX, Metallurgy and Materials Science, No. 3, 2014.
[12]. Benea L., Dănăilă E., Dumitraşcu V. M., Vegetable extracts as inhibitors of carbon steel corrosion in acidic environment, Advanced Materials Research, 1139, 46, 2016.
[13]. Qu Q., Wang L., Chen Y., Li L., He Y., Ding Z., Corrosion behavior of titanium in artificial saliva by lactic acid, Materials, 7(8), 5528, 2014.
[14]. Banu A., Marcu M., Juganaru C., Osiceanu P., Anastasescu M., Capra L., Corrosion behavior of CoCrMoW cast alloy in lactic acid environment for surgical applications, Arab. J. Chem., 12(8), 2007, 2017.
[15]. Takahashi M., Kikuchi M., Takada Y., Corrosion behavior of Ti-Ag alloys used in dentistry in lactic acid solution, Met. Mater, Int. 17(1), 175, 2011.
[16]. Perez N., Electrochemistry and corrosion science, Kluwer Academic Publishers, Boston, 83, 2004.
