Plasma-Immersion Modification of Nitinol Surface with Silicon to Improve the Corrosion Resistance of the Alloy in Biological Media

Abstract:

Cyclic voltammetry and potentiostatic polarization have been applied to study the electrochemical behavior and to determine the corrosion resistance of nitinol, which surface was modified with silicon using plasma-immersion ion implantation, in 0.9% NaCl solution and in artificial blood plasma. It was found out that continuous, and also homogeneous in composition, thin Si-containing layers are resistant to corrosion damage at high positive potentials in artificial physiological solutions due to the formation of stable passive films. Breakdown potential Eb of Si-modified NiTi depends on the character of silicon and Ni distribution at the alloy surface, Eb values amounted to 0.9–1.5 V (Ag/AgCl/KCl sat.) for the alloy samples with continuous Si-containing surface layers and with decreased Ni surface concentration.

• Periodical: Key Engineering Materials (Volume 743)
• Pages: 129-134
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.743.129
• Online since: July 2017
• Authors: Polina Vladimirovna Abramova*, Andrey V. Korshunov, Ivan Evgen'evich Fedorov, Alexander Ivanovich Lotkov
• Keywords: Biological Solutions, Corrosion, Ion Implantation, Nitinol

References

[1] T. Yoneyama, S. Miyazaki, Shape memory alloys for biomedical applications, Woodhead Publishing Limited, Cambridge, England, 2008, 337 p.

[2] H. J. Saxholm, Effect of Nickel Compounds in cell culture, in R. Hausinger, Biochemistry of Nickel, Plenum Press, New York, 1993, pp.165-173.

[3] S. Shabalovskaya, G. Rondelli, J. Anderegg, Comparative corrosion performance of black oxide, sandblasted, and fine-drawn nitinol wires in potentiodynamic and potentiostatic tests: effects of chemical etching and electropolishing, J. Biomed. Mater. Res. B: Appl. Biomater., 69 B, (2004).

DOI: 10.1002/jbm.b.30006

[4] M. Maitz, N. Shevchenko, Plasma-immersion ion-implanted nitinol surface with depressed nickel concentration for implants in blood, J. Biomed. Mater. Res. A, 76 A, (2006), 356-365.

DOI: 10.1002/jbm.a.30526

[5] A.I. Lotkov, S.G. Psakhie, L.L. Meisner, Corrosion resistance of siliconmodified nitinol in artificial physiological solution, Advanced Biomaterials and Devices in Medicine, 1, (2014), 46-52.

[6] A.V. Mostovshchikov, A.P. Ilyin, et al., Thermal Stability of Iron Micro- and Nanopowders after Electron Beam Irradiation, Key Engineering Materials, 712, (2016), 60-64.

DOI: 10.4028/www.scientific.net/kem.712.60

[7] A.V. Mostovshchikov, A.P. Ilyin, et al., The Energy Stored in the Aluminum Nanopowder Irradiated by Electron Beam, Key Engineering Materials, 685, (2016), 639-642.

DOI: 10.4028/www.scientific.net/kem.685.639

[8] D.P., Borisov, K.N. Detistov, A.D. Korotaev, et al., Vakuumno-plazmennyj tehnologicheskij kompleks «SPRUT» dlja sozdanija novyh nanokompozitnyh materialov i uprochnjajushhih poverhnostnyh struktur izdelij. Zavodskaja laboratorija. Diagnostika materialov, 76, № 12, (2010).

[9] GOST R ISO 10993-15-2009 Medical devices. Evaluation of biological effect of medical devices. Part 15. Identification and quantitative determination of degradation products of devices of metals and alloys, Moscow: Standartinform, Publ., 2010, 16 p.

DOI: 10.2345/9781570207754.ch1

[10] P.V. Bozhko, A.V. Korshunov, A.P. Iljin, A.I. Lotkov, I.V. Ratochka, Reactivity of Submicrocrystalline Titanium: II. Electrochemical Properties and Corrosion Stability in Sulfuric Acid Solutions, Inorganic Materials: Applied Research, 4, № 2, (2013).

DOI: 10.1134/s2075113313020032

[11] D.O. Perevezentseva, E.V. Gorchakov, Yu. A Oskina, Electrolytic behavior silver microphases and nanophases on the graphite electrode surface, Key Engineering Materials, 712, (2016), 117-122.

DOI: 10.4028/www.scientific.net/kem.712.117