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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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Hajibabaei H, Hamann TW. Selective Electrodeposition of Tantalum(V) Oxide Electrodes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10800-10806. [PMID: 28934549 DOI: 10.1021/acs.langmuir.7b02414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Thin films of TaOxHy were cathodically electrodeposited from an aqueous solution containing Ta-IPA precursor and KNO3 as a sacrificial agent. It was shown that the deposition resulted from a precipitation reaction triggered by the local change of pH at the surface of working electrode. Combined structural and compositional analysis revealed that during the electrodeposition the oxidation state of tantalum remained constant, Ta(V). The as-deposited films are mesoporous amorphous tantalum oxide hydrate films, which can be converted to either pure Ta2O5 or Ta3N5 by high-temperature annealing in either air (or Ar) or ammonia, respectively. The Ta3N5 electrodes exhibited promising PEC activity for water oxidation. These results open the door for the reduced temperature synthesis of Ta3N5 electrodes on TCO substrates which would allow for efficient overall solar water splitting.
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Affiliation(s)
- Hamed Hajibabaei
- Department of Chemistry, Michigan State University , 578 S Shaw Lane, East Lansing, Michigan 48824-1322, United States
| | - Thomas W Hamann
- Department of Chemistry, Michigan State University , 578 S Shaw Lane, East Lansing, Michigan 48824-1322, United States
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Zhang Q, Wang Q, Zhang S, Lu X, Zhang X. Electrodeposition in Ionic Liquids. Chemphyschem 2015; 17:335-51. [PMID: 26530378 DOI: 10.1002/cphc.201500713] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Indexed: 11/08/2022]
Abstract
Due to their attractive physico-chemical properties, ionic liquids (ILs) are increasingly used as deposition electrolytes. This review summarizes recent advances in electrodeposition in ILs and focuses on its similarities and differences with that in aqueous solutions. The electrodeposition in ILs is divided into direct and template-assisted deposition. We detail the direct deposition of metals, alloys and semiconductors in five types of ILs, including halometallate ILs, air- and water-stable ILs, deep eutectic solvents (DESs), ILs with metal-containing cations, and protic ILs. Template-assisted deposition of nanostructures and macroporous structures in ILs is also presented. The effects of modulating factors such as deposition conditions (current density, current density mode, deposition time, temperature) and electrolyte components (cation, anion, metal salts, additives, water content) on the morphology, compositions, microstructures and properties of the prepared materials are highlighted.
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Affiliation(s)
- Qinqin Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China.,College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, People's Republic of China
| | - Qian Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Suojiang Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China.
| | - Xingmei Lu
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Xiangping Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
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Mais L, Mascia M, Vacca A, Palmas S, Delogu F. Electrochemical deposition of Cu and Ta from pyrrolidinium based ionic liquid. J APPL ELECTROCHEM 2015. [DOI: 10.1007/s10800-015-0824-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Corrosion behaviour of Nitinol alloy coated with alkylsilanes and polypyrrole. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 44:317-25. [DOI: 10.1016/j.msec.2014.08.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 07/16/2014] [Accepted: 08/13/2014] [Indexed: 11/19/2022]
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Maho A, Detriche S, Fonder G, Delhalle J, Mekhalif Z. Electrochemical Co-Deposition of Phosphonate-Modified Carbon Nanotubes and Tantalum on Nitinol. ChemElectroChem 2014. [DOI: 10.1002/celc.201300197] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Electrochemical Investigation of Nitinol/Tantalum Hybrid Surfaces Modified by Alkylphosphonic Self-Assembled Monolayers. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.11.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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