Abstract

REYES, Felipe; GALINDO, Julie  and  APERADOR, William. Analysis of properties and degradation of the alloy Fe- 3.31 Mn - 21.2 Al - 5.6 Cr - 0.7 C- 0.2 Ti. Rev. ion [online]. 2012, vol.25, n.spe, pp.31-37. ISSN 0120-100X.

Nowadays, AISI 316LVM austenitic steel alloys are used as biomaterial, since good mechanical properties for this application have been demonstrated, given special fabrication processes. However, degradation problems arise when exposed to biological fluids, generating contamination by nickel content, which is highly carcinogenic. The Fe - 3.31 Mn - 21.2 Al - 5.6 Cr - 0.7 C - 0.2 Ti alloy, is a material in which nickel is replaced for manganese, thus avoiding nickel ions migration from implant to organism. Degradation properties of a Fe- 3.31 Mn - 21.2 Al - 5.6 Cr - 0.7 C- 0.2 Ti alloy in an electrolyte simulating a corporal fluid were analyzed and compared, in order to determine viability of this alloy as a biocompatible material. AISI 316LVM steel was used as comparison and reference material. Electrochemical behavior was evaluated through techniques such as Electrochemical Impedance Spectroscopy and Anodic Polarization Curves in a Hanks solution (a dissolution that simulates organic fluid inside the human body). This characterization and comparison provides evidence favoring the potential use of Fe-Mn-Al-Cr-C-Ti potential use in surgical implants, showing as well his feasibility of implementation in other possible future applications.

Keywords : biomaterials; corrosion; Fermanal alloy; biocompatibility.

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