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Chmielewska A, Dobkowska A, Kijeńska-Gawrońska E, Jakubczak M, Krawczyńska A, Choińska E, Jastrzębska A, Dean D, Wysocki B, Święszkowski W. Biological and Corrosion Evaluation of In Situ Alloyed NiTi Fabricated through Laser Powder Bed Fusion (LPBF). Int J Mol Sci 2021; 22:13209. [PMID: 34948005 PMCID: PMC8706883 DOI: 10.3390/ijms222413209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/19/2021] [Accepted: 11/30/2021] [Indexed: 11/16/2022] Open
Abstract
In this work, NiTi alloy parts were fabricated using laser powder bed fusion (LBPF) from pre-alloyed NiTi powder and in situ alloyed pure Ni and Ti powders. Comparative research on the corrosive and biological properties of both studied materials was performed. Electrochemical corrosion tests were carried out in phosphate buffered saline at 37 °C, and the degradation rate of the materials was described based on Ni ion release measurements. Cytotoxicity, bacterial growth, and adhesion to the surface of the fabricated coupons were evaluated using L929 cells and spherical Escherichia coli (E. coli) bacteria, respectively. The in situ alloyed NiTi parts exhibit slightly lower corrosion resistance in phosphate buffered saline solution than pre-alloyed NiTi. Moreover, the passive layer formed on in situ alloyed NiTi is weaker than the one formed on the NiTi fabricated from pre-alloyed NiTi powder. Furthermore, in situ alloyed NiTi and NiTi made from pre-alloyed powders have comparable cytotoxicity and biological properties. Overall, the research has shown that nitinol sintered using in situ alloyed pure Ni and Ti is potentially useful for biomedical applications.
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Affiliation(s)
- Agnieszka Chmielewska
- Faculty of Material Science and Engineering, Warsaw University of Technology, Woloska 141 Str., 02-507 Warsaw, Poland; (A.D.); (M.J.); (A.K.); (E.C.); (A.J.)
| | - Anna Dobkowska
- Faculty of Material Science and Engineering, Warsaw University of Technology, Woloska 141 Str., 02-507 Warsaw, Poland; (A.D.); (M.J.); (A.K.); (E.C.); (A.J.)
| | - Ewa Kijeńska-Gawrońska
- Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19 Str., 02-822 Warsaw, Poland;
| | - Michał Jakubczak
- Faculty of Material Science and Engineering, Warsaw University of Technology, Woloska 141 Str., 02-507 Warsaw, Poland; (A.D.); (M.J.); (A.K.); (E.C.); (A.J.)
| | - Agnieszka Krawczyńska
- Faculty of Material Science and Engineering, Warsaw University of Technology, Woloska 141 Str., 02-507 Warsaw, Poland; (A.D.); (M.J.); (A.K.); (E.C.); (A.J.)
| | - Emilia Choińska
- Faculty of Material Science and Engineering, Warsaw University of Technology, Woloska 141 Str., 02-507 Warsaw, Poland; (A.D.); (M.J.); (A.K.); (E.C.); (A.J.)
| | - Agnieszka Jastrzębska
- Faculty of Material Science and Engineering, Warsaw University of Technology, Woloska 141 Str., 02-507 Warsaw, Poland; (A.D.); (M.J.); (A.K.); (E.C.); (A.J.)
| | - David Dean
- Department of Plastic and Reconstructive Surgery, The Ohio State University, 915 Olentangy River Rd., Columbus, OH 43212, USA;
- Department of Materials Science and Engineering, The Ohio State University, 140 W 19th Ave., Columbus, OH 43210, USA
| | - Bartłomiej Wysocki
- Centre of Digital Science and Technology, Cardinal Stefan Wyszynski University in Warsaw, Woycickiego 1/3, 01-938 Warsaw, Poland;
| | - Wojciech Święszkowski
- Faculty of Material Science and Engineering, Warsaw University of Technology, Woloska 141 Str., 02-507 Warsaw, Poland; (A.D.); (M.J.); (A.K.); (E.C.); (A.J.)
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