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Nasakina EO, Sudarchikova MA, Sergienko KV, Konushkin SV, Sevost’yanov MA. Ion Release and Surface Characterization of Nanostructured Nitinol during Long-Term Testing. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1569. [PMID: 31694335 PMCID: PMC6915401 DOI: 10.3390/nano9111569] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 10/17/2019] [Accepted: 10/28/2019] [Indexed: 11/27/2022]
Abstract
The corrosion resistance of nanostructured nitinol (NiTi) was investigated using long-term tests in solutions simulating physiological fluids at static conditions, reflecting the material structure and metal concentration in the solutions. Mechanical polishing reduced the ion release by a factor of two to three, whereas annealing deteriorated the corrosion resistance. The depassivation and repassivation of nitinol surfaces were considered. We found that nanostructured nitinol might increase the corrosion leaching of titanium into solutions, although the nickel release decreased. Metal dissolution did not occur in the alkaline environment or artificial plasma. A Ni-free surface with a protective 25 nm-thick titanium oxide film resulted from soaking mechanically treated samples of the NiTi wire in a saline solution for two years under static conditions. Hence, the medical application of nanostructured NiTi, such as for the production of medical devices and implants such as stents, shows potential compared with microstructured NiTi.
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Affiliation(s)
- Elena O. Nasakina
- Laboratory of Durability and Plasticity of Metal and Composite Materials and Nanomaterials, Institution of Russian Academy of Sciences, A.A. Baikov Institute of Metallurgy and Material Science RAS (IMET RAS), Leninsky Prospect 49, 119991 Moscow, Russia; (M.A.S.); (K.V.S.); (S.V.K.); (M.A.S.)
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Sevost'yanov MA, Nasakina EO, Baikin AS, Sergienko KV, Konushkin SV, Kaplan MA, Seregin AV, Leonov AV, Kozlov VA, Shkirin AV, Bunkin NF, Kolmakov AG, Simakov SV, Gudkov SV. Biocompatibility of new materials based on nano-structured nitinol with titanium and tantalum composite surface layers: experimental analysis in vitro and in vivo. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:33. [PMID: 29546502 DOI: 10.1007/s10856-018-6039-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 03/05/2018] [Indexed: 06/08/2023]
Abstract
A technology for obtaining materials from nanostructured nitinol with titanium- or tantalum-enriched surface layers was developed. Surface layers enriched with titanium or tantalum were shown to provide a decrease in the formation of reactive oxygen species and long-lived protein radicals in comparison to untreated nitinol. It was determined that human peripheral vessel myofibroblasts and human bone marrow mesenchymal stromal cells grown on nitinol bases coated with titanium or tantalum-enriched surface layers exhibit a nearly two times higher mitotic index. Response to implantation of pure nitinol, as well as nano-structure nitinol with titanium or tantalum-enriched surface layers, was expressed though formation of a mature uniform fibrous capsule peripherally to the fragment. The thickness of this capsule in the group of animals subjected to implantation of pure nitinol was 1.5 and 3.0-fold greater than that of the capsule in the groups implanted with nitinol fragments with titanium- or tantalum-enriched layers. No signs of calcinosis in the tissues surrounding implants with coatings were observed. The nature and structure of the formed capsules testify bioinertia of the implanted samples. It was shown that the morphology and composition of the surface of metal samples does not alter following biological tests. The obtained results indicate that nano-structure nitinol with titanium or tantalum enriched surface layers is a biocompatible material potentially suitable for medical applications.
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Affiliation(s)
- Mikhail A Sevost'yanov
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | - Elena O Nasakina
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | - Alexander S Baikin
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | - Konstantin V Sergienko
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | - Sergey V Konushkin
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | - Mikhail A Kaplan
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | - Alexey V Seregin
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
- Bauman Moscow State Technical University, Moscow, Russia
| | - Alexander V Leonov
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
- Bauman Moscow State Technical University, Moscow, Russia
| | - Valery A Kozlov
- Bauman Moscow State Technical University, Moscow, Russia
- A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russia
| | - Alexey V Shkirin
- A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russia
- National Research Nuclear University MEPhI, Moscow, Russia
| | - Nikolai F Bunkin
- Bauman Moscow State Technical University, Moscow, Russia
- A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russia
| | - Alexey G Kolmakov
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | - Sergey V Simakov
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | - Sergey V Gudkov
- A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russia.
- Depatment of Biophysics, Lobachevsky State University of Nizhni Novgorod, Nizhni Novgorod, Russia.
- Moscow Regional Research and Clinical Institute (MONIKI), Moscow, Russia.
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