Improving the corrosion resistance of nitinol by plasma-immersion ion implantation with silicon for biomedical applications

P. V. Abramova, A. V. Korshunov, A. I. Lotkov, O. A. Kashin, D. P. Borisov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Cyclic voltammetry and potentiostatic polarization have been applied to study electrochemical behavior and to determine 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 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.

Original languageEnglish
Title of host publicationNew Operational Technologies, NEWOT 2015
Subtitle of host publicationProceedings of the 5th International Scientific Conference "New Operational Technologies"
PublisherAmerican Institute of Physics Inc.
Volume1688
ISBN (Electronic)9780735413351
DOIs
Publication statusPublished - 17 Nov 2015
Event5th International Scientific Conference on New Operational Technologies, NEWOT 2015 - Tomsk, Russian Federation
Duration: 29 Sep 201530 Sep 2015

Conference

Conference5th International Scientific Conference on New Operational Technologies, NEWOT 2015
CountryRussian Federation
CityTomsk
Period29.9.1530.9.15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Abramova, P. V., Korshunov, A. V., Lotkov, A. I., Kashin, O. A., & Borisov, D. P. (2015). Improving the corrosion resistance of nitinol by plasma-immersion ion implantation with silicon for biomedical applications. In New Operational Technologies, NEWOT 2015: Proceedings of the 5th International Scientific Conference "New Operational Technologies" (Vol. 1688). [050003] American Institute of Physics Inc.. https://doi.org/10.1063/1.4936049