Determination of the Corrosion and Biocompatibility Properties of As-Cast TiNi Alloys
In this study, a TiNi alloy with a composition of 50 at.% of titanium and 50 at.% of nickel is investigated in terms of its corrosion and biocompatibility behavior for biomedical applications. The corrosion measurements, which include the determination of open-circuit potential and linear polarizati...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-07-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/15/7/758 |
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| author | Minja Miličić Lazić Dijana Mitić Biljana Dojčinović Marko Lazić Aleksandra S. Popović Branimir N. Grgur |
| author_facet | Minja Miličić Lazić Dijana Mitić Biljana Dojčinović Marko Lazić Aleksandra S. Popović Branimir N. Grgur |
| author_sort | Minja Miličić Lazić |
| collection | DOAJ |
| description | In this study, a TiNi alloy with a composition of 50 at.% of titanium and 50 at.% of nickel is investigated in terms of its corrosion and biocompatibility behavior for biomedical applications. The corrosion measurements, which include the determination of open-circuit potential and linear polarization resistance measurements, cyclic polarization measurements, and electrochemical impedance spectroscopy in 9 g L<sup>−1</sup> NaCl, show that TiNi has satisfactory corrosion stability. According to the SEM and EDS analysis, after cyclic polarization, pitting corrosion occurred, accompanied by the dissolution of the unstable Ti<sub>2</sub>Ni inclusions. The analysis also showed that TiNi has good biocompatibility for human osteoblast-like cells, as determined by the mitochondrial activity, which was assessed using a direct contact test following ISO standard 10993-5, via scanning electron microscopy (SEM) and fluorescent microscopy. |
| format | Article |
| id | doaj-art-75172b8f6bcf49f99a7bed2c3816d8ea |
| institution | DOAJ |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-75172b8f6bcf49f99a7bed2c3816d8ea2025-08-20T03:08:13ZengMDPI AGMetals2075-47012025-07-0115775810.3390/met15070758Determination of the Corrosion and Biocompatibility Properties of As-Cast TiNi AlloysMinja Miličić Lazić0Dijana Mitić1Biljana Dojčinović2Marko Lazić3Aleksandra S. Popović4Branimir N. Grgur5Faculty of Dental Medicine, University of Belgrade, Dr Subotica 8, 11000 Belgrade, SerbiaFaculty of Dental Medicine, University of Belgrade, Dr Subotica 8, 11000 Belgrade, SerbiaInstitute of Chemistry, Technology and Metallurgy (ICTM), National Institute of the Republic of Serbia, University of Belgrade, Njegoševa 12, 11000 Belgrade, SerbiaFaculty of Dental Medicine, University of Belgrade, Dr Subotica 8, 11000 Belgrade, SerbiaFaculty of Technology and Metallurgy, University of Belgrade, 11200, Belgrade, SerbiaFaculty of Technology and Metallurgy, University of Belgrade, 11200, Belgrade, SerbiaIn this study, a TiNi alloy with a composition of 50 at.% of titanium and 50 at.% of nickel is investigated in terms of its corrosion and biocompatibility behavior for biomedical applications. The corrosion measurements, which include the determination of open-circuit potential and linear polarization resistance measurements, cyclic polarization measurements, and electrochemical impedance spectroscopy in 9 g L<sup>−1</sup> NaCl, show that TiNi has satisfactory corrosion stability. According to the SEM and EDS analysis, after cyclic polarization, pitting corrosion occurred, accompanied by the dissolution of the unstable Ti<sub>2</sub>Ni inclusions. The analysis also showed that TiNi has good biocompatibility for human osteoblast-like cells, as determined by the mitochondrial activity, which was assessed using a direct contact test following ISO standard 10993-5, via scanning electron microscopy (SEM) and fluorescent microscopy.https://www.mdpi.com/2075-4701/15/7/758open-circuit potentialcyclic polarizationimpedanceTi<sub>2</sub>Niosteoblast cells |
| spellingShingle | Minja Miličić Lazić Dijana Mitić Biljana Dojčinović Marko Lazić Aleksandra S. Popović Branimir N. Grgur Determination of the Corrosion and Biocompatibility Properties of As-Cast TiNi Alloys Metals open-circuit potential cyclic polarization impedance Ti<sub>2</sub>Ni osteoblast cells |
| title | Determination of the Corrosion and Biocompatibility Properties of As-Cast TiNi Alloys |
| title_full | Determination of the Corrosion and Biocompatibility Properties of As-Cast TiNi Alloys |
| title_fullStr | Determination of the Corrosion and Biocompatibility Properties of As-Cast TiNi Alloys |
| title_full_unstemmed | Determination of the Corrosion and Biocompatibility Properties of As-Cast TiNi Alloys |
| title_short | Determination of the Corrosion and Biocompatibility Properties of As-Cast TiNi Alloys |
| title_sort | determination of the corrosion and biocompatibility properties of as cast tini alloys |
| topic | open-circuit potential cyclic polarization impedance Ti<sub>2</sub>Ni osteoblast cells |
| url | https://www.mdpi.com/2075-4701/15/7/758 |
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