Abstract

GALEANO-OSORIO, Diana Shirley; VARGAS-GIRALDO, Santiago  and  VELEZ-RESTREPO, Juan Manuel. Electrochemical behavior of 316L, 316L nitrided and F1586 steels in simulated body fluid. Rev.EIA.Esc.Ing.Antioq [online]. 2020, vol.17, n.34, pp.62-72.  Epub Aug 28, 2021. ISSN 1794-1237.  https://doi.org/10.24050/reia.v17i34.1461.

Metal materials are frequently used in the manufacture of biomedical implants, and corrosion is a critical factor that determines the success of the implant performance in the body. Due to this, this research is focused on studying the electrochemical behavior of 316L, nitrided 316L, and F1586 steels in simulated body fluid. With X-ray diffraction, it was possible to deduce that the nitrided steel surface was composed, besides to austenitic phase, of S phase. According to the electrochemical results, the passive layer of the nitrided 316L and the F1586 steels were the most protective compared to 316L steel. It was due to the high stability of the nitrided steel's passive layer and the possible formation of stable corrosion products on the F1586 steel's surface. In general terms, nitrided 316L steel revealed the least corrosion in the simulated body fluid.

Keywords : Austenitc stainless steel; Passive layer; Corrosion; Simulated body fluid; Plasma nitriding.

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