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Rivkin B, Akbar F, Otto M, Beyer L, Paul B, Kosiba K, Gustmann T, Hufenbach J, Medina-Sánchez M. Remotely Controlled Electrochemical Degradation of Metallic Implants. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307742. [PMID: 38326101 DOI: 10.1002/smll.202307742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 01/22/2024] [Indexed: 02/09/2024]
Abstract
Biodegradable medical implants promise to benefit patients by eliminating risks and discomfort associated with permanent implantation or surgical removal. The time until full resorption is largely determined by the implant's material composition, geometric design, and surface properties. Implants with a fixed residence time, however, cannot account for the needs of individual patients, thereby imposing limits on personalization. Here, an active Fe-based implant system is reported whose biodegradation is controlled remotely and in situ. This is achieved by incorporating a galvanic cell within the implant. An external and wireless signal is used to activate the on-board electronic circuit that controls the corrosion current between the implant body and an integrated counter electrode. This configuration leads to the accelerated degradation of the implant and allows to harvest electrochemical energy that is naturally released by corrosion. In this study, the electrochemical properties of the Fe-30Mn-1C/Pt galvanic cell model system is first investigated and high-resolution X-ray microcomputed tomography is used to evaluate the galvanic degradation of stent structures. Subsequently, a centimeter-sized active implant prototype is assembled with conventional electronic components and the remotely controlled corrosion is tested in vitro. Furthermore, strategies toward the miniaturization and full biodegradability of this system are presented.
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Affiliation(s)
- Boris Rivkin
- Leibniz Institute for Solid State and Materials Research (IFW), 01069, Dresden, Germany
| | - Farzin Akbar
- Leibniz Institute for Solid State and Materials Research (IFW), 01069, Dresden, Germany
| | - Martin Otto
- Leibniz Institute for Solid State and Materials Research (IFW), 01069, Dresden, Germany
- Institute of Materials Science, Technische Universität Bergakademie Freiberg, 09599, Freiberg, Germany
| | - Lukas Beyer
- Leibniz Institute for Solid State and Materials Research (IFW), 01069, Dresden, Germany
- Institute of Materials Science, Technische Universität Bergakademie Freiberg, 09599, Freiberg, Germany
| | - Birgit Paul
- Leibniz Institute for Solid State and Materials Research (IFW), 01069, Dresden, Germany
| | - Konrad Kosiba
- Leibniz Institute for Solid State and Materials Research (IFW), 01069, Dresden, Germany
| | - Tobias Gustmann
- Leibniz Institute for Solid State and Materials Research (IFW), 01069, Dresden, Germany
| | - Julia Hufenbach
- Leibniz Institute for Solid State and Materials Research (IFW), 01069, Dresden, Germany
- Institute of Materials Science, Technische Universität Bergakademie Freiberg, 09599, Freiberg, Germany
| | - Mariana Medina-Sánchez
- Leibniz Institute for Solid State and Materials Research (IFW), 01069, Dresden, Germany
- Center for Molecular Bioengineering (B CUBE), Chair of Micro- and Nano Systems, Technische Universität Dresden, 01307, Dresden, Germany
- CIC nanoGUNE-BRTA, Donostia-San Sebastián, 20018, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, 48013, Spain
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Paul B, Kiel A, Otto M, Gemming T, Hoffmann V, Giebeler L, Kaltschmidt B, Hütten A, Gebert A, Kaltschmidt B, Kaltschmidt C, Hufenbach J. Inherent Antibacterial Properties of Biodegradable FeMnC(Cu) Alloys for Implant Application. ACS APPLIED BIO MATERIALS 2024; 7:839-852. [PMID: 38253353 PMCID: PMC10880094 DOI: 10.1021/acsabm.3c00835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/04/2023] [Accepted: 12/22/2023] [Indexed: 01/24/2024]
Abstract
Implant-related infections or inflammation are one of the main reasons for implant failure. Therefore, different concepts for prevention are needed, which strongly promote the development and validation of improved material designs. Besides modifying the implant surface by, for example, antibacterial coatings (also implying drugs) for deterring or eliminating harmful bacteria, it is a highly promising strategy to prevent such implant infections by antibacterial substrate materials. In this work, the inherent antibacterial behavior of the as-cast biodegradable Fe69Mn30C1 (FeMnC) alloy against Gram-negative Pseudomonas aeruginosa and Escherichia coli as well as Gram-positive Staphylococcus aureus is presented for the first time in comparison to the clinically applied, corrosion-resistant AISI 316L stainless steel. In the second step, 3.5 wt % Cu was added to the FeMnC reference alloy, and the microbial corrosion as well as the proliferation of the investigated bacterial strains is further strongly influenced. This leads for instance to enhanced antibacterial activity of the Cu-modified FeMnC-based alloy against the very aggressive, wild-type bacteria P. aeruginosa. For clarification of the bacterial test results, additional analyses were applied regarding the microstructure and elemental distribution as well as the initial corrosion behavior of the alloys. This was electrochemically investigated by a potentiodynamic polarization test. The initial degraded surface after immersion were analyzed by glow discharge optical emission spectrometry and transmission electron microscopy combined with energy-dispersive X-ray analysis, revealing an increase of degradation due to Cu alloying. Due to their antibacterial behavior, both investigated FeMnC-based alloys in this study are attractive as a temporary implant material.
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Affiliation(s)
- Birgit Paul
- Leibniz
Institute for Solid State and Materials Research Dresden, Helmholtzstr. 20, 01069 Dresden, Germany
| | - Annika Kiel
- Department
of Cell Biology, Faculty of Biology, Universität
Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Martin Otto
- Leibniz
Institute for Solid State and Materials Research Dresden, Helmholtzstr. 20, 01069 Dresden, Germany
- Institute
of Materials Science, Technische Universität
Bergakademie Freiberg, Gustav-Zeuner-Str. 5, 09599 Freiberg, Germany
| | - Thomas Gemming
- Leibniz
Institute for Solid State and Materials Research Dresden, Helmholtzstr. 20, 01069 Dresden, Germany
| | - Volker Hoffmann
- Leibniz
Institute for Solid State and Materials Research Dresden, Helmholtzstr. 20, 01069 Dresden, Germany
| | - Lars Giebeler
- Leibniz
Institute for Solid State and Materials Research Dresden, Helmholtzstr. 20, 01069 Dresden, Germany
| | - Bernhard Kaltschmidt
- Department
of Thin Films and Physics of Nanostructures, Center of Spinelectronic
Materials and Devices, Faculty of Physics, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Andreas Hütten
- Department
of Thin Films and Physics of Nanostructures, Center of Spinelectronic
Materials and Devices, Faculty of Physics, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Annett Gebert
- Leibniz
Institute for Solid State and Materials Research Dresden, Helmholtzstr. 20, 01069 Dresden, Germany
| | - Barbara Kaltschmidt
- Department
of Cell Biology, Faculty of Biology, Universität
Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Christian Kaltschmidt
- Department
of Cell Biology, Faculty of Biology, Universität
Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Julia Hufenbach
- Leibniz
Institute for Solid State and Materials Research Dresden, Helmholtzstr. 20, 01069 Dresden, Germany
- Institute
of Materials Science, Technische Universität
Bergakademie Freiberg, Gustav-Zeuner-Str. 5, 09599 Freiberg, Germany
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Sotoudeh Bagha P, Paternoster C, Khakbiz M, Sheibani S, Gholami N, Mantovani D. Surface Modification of an Absorbable Bimodal Fe-Mn-Ag Alloy by Nitrogen Plasma Immersion Ion Implantation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1048. [PMID: 36770055 PMCID: PMC9919902 DOI: 10.3390/ma16031048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/11/2023] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
Recently, Fe-Mn-based alloys have been increasingly catching the attention of the scientific community, because of their tunable and outstanding mechanical properties, and suitable degradation behavior for biomedical applications. In spite of these assets, their corrosion rate (CR) is, in general, too low to satisfy the requirements that need to be met for cardiovascular device applications, such as stents. In fact, the CR is not always the same for all of the degradation stages of the material, and in addition, a finely tuned release rate, especially during the first steps of the corrosion pattern, is often demanded. In this work, a resorbable bimodal multi-phase alloy Fe-3Mn-1Ag was designed by mechanical alloying and spark plasma sintering (SPS) to accelerate the corrosion rate. The presence of several phases, for example α-Fe, α-Mn, γ-FeMn and Ag, provided the material with excellent mechanical properties (tensile strength UTS = 722 MPa, tensile strain A = 38%) and a higher corrosion rate (CR = 3.2 ± 0.2 mm/year). However, higher corrosion rates, associated with an increased release of degradation elements, could also raise toxicity concerns, especially at the beginning of the corrosion pattern. In this study, The focus of the present work was the control of the CR by surface modification, with nitrogen plasma immersion ion implantation (N-PIII) treatment that was applied to mechanically polished (MP) samples. This plasma treatment (PT) improved the corrosion resistance of the material, assessed by static degradation immersion tests (SDITs), especially during the first degradation stages. Twenty-eight days later, the degradation rate reached the same value of the MP condition. Nitrogen compounds on the surface of the substrate played an important role in the corrosion mechanism and corrosion product formation. The degradation analysis was carried out also by potentiodynamic tests in modified Hanks' balanced salt solution (MHBSS), and Dulbecco's phosphate buffered saline solution (DPBSS). The corrosion rate was higher in MHBSS for both conditions. However, there was no significant difference between the corrosion rate of the PT in DPBSS (CR = 1.9 ± 0.6 mm/year) and in MHBSS (CR = 2 ± 1.4 mm/year). The cell viability was assessed with human vein endothelial cells (HUVECs) via an indirect metabolic activity test (MTT assay). Due to the lower ion release of the PT condition, the cell viability increased significantly. Thus, nitrogen implantation can control the in vitro corrosion rate starting from the very first stage of the implantation, improving cell viability.
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Affiliation(s)
- Pedram Sotoudeh Bagha
- BiionixTM (Bionic Materials, Implants & Interfaces) Cluster, Department of Medicine, University of Central Florida College of Medicine, Orlando, FL 32827, USA
| | - Carlo Paternoster
- Lab Biomaterials and Bioengineering, CRC-I, Department of Mining, Metallurgical and Materials Engineering & CHU de Quebec Research Center, Regenerative Medicine, Laval University, Quebec City, QC G1V 0A6, Canada
| | - Mehrdad Khakbiz
- Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 088854, USA
- Division of Biomedical Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran 14395-1561, Iran
| | - Saeed Sheibani
- School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran 11155-4563, Iran
| | - Navid Gholami
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran 14177-55469, Iran
| | - Diego Mantovani
- Lab Biomaterials and Bioengineering, CRC-I, Department of Mining, Metallurgical and Materials Engineering & CHU de Quebec Research Center, Regenerative Medicine, Laval University, Quebec City, QC G1V 0A6, Canada
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Ron T, Leon A, Popov V, Strokin E, Eliezer D, Shirizly A, Aghion E. Synthesis of Refractory High-Entropy Alloy WTaMoNbV by Powder Bed Fusion Process Using Mixed Elemental Alloying Powder. MATERIALS 2022; 15:ma15124043. [PMID: 35744102 PMCID: PMC9229239 DOI: 10.3390/ma15124043] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/03/2022] [Accepted: 06/05/2022] [Indexed: 11/24/2022]
Abstract
The growing interest in refractory high-entropy alloys (HEAs) in the last decade is mainly due to their thermal stability, outstanding mechanical properties, and excellent corrosion resistance. However, currently HEAs are still not considered for use as common structural materials due to their inherent drawbacks in terms of processing and machining operations. The recent progress witnessed in additive manufacturing (AM) technologies has raised the option of producing complex components made of HEAs with minimal machining processes. So far, this could be achieved by using pre-alloyed powders of HEAs that were mainly produced by a conventional arc melting furnace (AMF) in the form of small compounds that were transformed into powder via a gas atomization process. To significantly reduce the production cost, the present study aims to analyze the ability to synthesize HEA WTaMoNbV via a laser powder bed fusion (LPBF) process using mixed elemental alloying powder as the raw material. For comparison, a counterpart alloy with the same chemical composition was analyzed and produced by an AMF process. The microstructures of the tested alloys were examined by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) analyses. The physical properties were evaluated in terms of density and mechanical strength, while the electrochemical behavior was assessed by potentiodynamic polarization analysis. The results disclosed similarities in microstructure, physical properties and electrochemical behavior between HEA WTaMoNbV manufactured by the proposed LPBF process and its counterpart alloy produced by an AMF process.
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Affiliation(s)
- Tomer Ron
- Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (A.L.); (D.E.); (A.S.); (E.A.)
- Correspondence:
| | - Avi Leon
- Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (A.L.); (D.E.); (A.S.); (E.A.)
| | - Vladimir Popov
- Institute of Metals, Technion, Haifa 3200003, Israel; (V.P.); (E.S.)
| | - Evgeny Strokin
- Institute of Metals, Technion, Haifa 3200003, Israel; (V.P.); (E.S.)
| | - Dan Eliezer
- Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (A.L.); (D.E.); (A.S.); (E.A.)
| | - Amnon Shirizly
- Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (A.L.); (D.E.); (A.S.); (E.A.)
| | - Eli Aghion
- Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (A.L.); (D.E.); (A.S.); (E.A.)
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Possibilities of Additive Technologies for the Manufacturing of Tooling from Corrosion-Resistant Steels in Order to Protect Parts Surfaces from Thermochemical Treatment. METALS 2021. [DOI: 10.3390/met11101551] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The structure and physical–mechanical properties of products made from powders of corrosion-resistant steel 12X18H10T by the laser-beam powder bed fusion (LB-PBF) and subsequent ion-plasma nitriding in the work were investigated. Comparative studies of the physical mechanical properties of specimens made by the LB-PBF and conventional method from steel of the same grade were carried out. The density of the specimens and the coefficient of linear thermal expansion (CLTE) after the LB-PBF are almost the same as those of the conventionally manufactured specimens. Our analysis of the obtained dilatograms in the temperature range from 20 to 600 °C showed that the CLTE of steel after the LB-PBF is within acceptable limits (18.6 × 10−6 1/°C). Their hardness, tensile strength, yield strength and elongation are higher than those of a conventionally manufactured specimen. The phase composition and structure of specimens of steel 12X18H10T made by the LB-PBF after the process of ion-plasma nitriding were investigated. The obtained results show that the mode of ion-plasma nitriding used in this case (stage 1—570 °C for 36 h; stage 2—540 °C for 12 h) does not lead to deterioration of the characteristics of the selected steel. A technological process for the manufacture of modified tooling from 12X18H10T steel by the LB-PBF was developed. It protects the surfaces that are not subject to nitriding and makes it possible to obtain a uniform high-quality nitrided layer on the working surface of the part made from spheroidal graphite iron.
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