Improvement of the Corrosion Resistance of Biomedical Zr-Ti Alloys Using a Thermal Oxidation Treatment
Binary Zr-Ti alloys spontaneously develop a tenacious and compact oxide layer when their fresh surface is exposed either to air or to aqueous environments. Electrochemical impedance spectroscopy (EIS) analysis of Zr-45Ti, Zr-25Ti, and Zr-5Ti exposed to simulated physiological solutions at 37 ...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-01-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/2/166 |
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| author | Javier Izquierdo Daniel Mareci Georgiana Bolat Juan J. Santana Raquel Rodríguez-Raposo Luis C. Fernández-Mérida Liviu Burtan Lucia C. Trincă Ricardo M. Souto |
| author_facet | Javier Izquierdo Daniel Mareci Georgiana Bolat Juan J. Santana Raquel Rodríguez-Raposo Luis C. Fernández-Mérida Liviu Burtan Lucia C. Trincă Ricardo M. Souto |
| author_sort | Javier Izquierdo |
| collection | DOAJ |
| description | Binary Zr-Ti alloys spontaneously develop a tenacious and compact oxide layer when their fresh surface is exposed either to air or to aqueous environments. Electrochemical impedance spectroscopy (EIS) analysis of Zr-45Ti, Zr-25Ti, and Zr-5Ti exposed to simulated physiological solutions at 37 °C evidences the formation of a non-sealing bilayer oxide film that accounts for the corrosion resistance of the materials. Unfortunately, these oxide layers may undergo breakdown and stable pitting corrosion regimes at anodic potentials within the range of those experienced in the human body under stress and surgical conditions. Improved corrosion resistance has been achieved by prior treatment of these alloys using thermal oxidation in air. EIS was employed to measure the corrosion resistance of the Zr-Ti alloys in simulated physiological solutions of a wide pH range (namely 3 ≤ pH ≤ 8) at 37 °C, and the best results were obtained for the alloys pre-treated at 500 °C. The formation of the passivating oxide layers in simulated physiological solution was monitored <i>in situ</i> using scanning electrochemical microscopy (SECM), finding a transition from an electrochemically active surface, characteristic of the bare metal, to the heterogeneous formation of oxide layers behaving as insulating surfaces towards electron transfer reactions. |
| first_indexed | 2024-12-20T19:02:51Z |
| format | Article |
| id | doaj.art-a320ae3e062240088611a24c14df0d1f |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-20T19:02:51Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-a320ae3e062240088611a24c14df0d1f2022-12-21T19:29:22ZengMDPI AGMetals2075-47012020-01-0110216610.3390/met10020166met10020166Improvement of the Corrosion Resistance of Biomedical Zr-Ti Alloys Using a Thermal Oxidation TreatmentJavier Izquierdo0Daniel Mareci1Georgiana Bolat2Juan J. Santana3Raquel Rodríguez-Raposo4Luis C. Fernández-Mérida5Liviu Burtan6Lucia C. Trincă7Ricardo M. Souto8Institute of Material Science and Nanotechnology, Universidad de La Laguna, E-38200 La Laguna (Tenerife, Canary Islands), SpainDepartment of Chemical Engineering, Technical University “Gheorghe Asachi” of Iasi, Faculty of Chemical Engineering and Environmental Protection, D. Mangeron, 700050 Iasi, RomaniaDepartment of Chemical Engineering, Technical University “Gheorghe Asachi” of Iasi, Faculty of Chemical Engineering and Environmental Protection, D. Mangeron, 700050 Iasi, RomaniaDepartment of Process Engineering, Universidad de Las Palmas de Gran Canaria, Campus Universitario de Tafira, E-35017 Las Palmas de Gran Canaria, SpainInstitute of Material Science and Nanotechnology, Universidad de La Laguna, E-38200 La Laguna (Tenerife, Canary Islands), SpainInstitute of Material Science and Nanotechnology, Universidad de La Laguna, E-38200 La Laguna (Tenerife, Canary Islands), SpainClinics Department, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Faculty of Horticulture, Str. Aleea M. Sadoveanu, no. 8, 700490 Iasi, RomaniaExact Sciences Department, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Faculty of Horticulture, Str. Aleea M. Sadoveanu, no. 3, 700490 Iasi, RomaniaInstitute of Material Science and Nanotechnology, Universidad de La Laguna, E-38200 La Laguna (Tenerife, Canary Islands), SpainBinary Zr-Ti alloys spontaneously develop a tenacious and compact oxide layer when their fresh surface is exposed either to air or to aqueous environments. Electrochemical impedance spectroscopy (EIS) analysis of Zr-45Ti, Zr-25Ti, and Zr-5Ti exposed to simulated physiological solutions at 37 °C evidences the formation of a non-sealing bilayer oxide film that accounts for the corrosion resistance of the materials. Unfortunately, these oxide layers may undergo breakdown and stable pitting corrosion regimes at anodic potentials within the range of those experienced in the human body under stress and surgical conditions. Improved corrosion resistance has been achieved by prior treatment of these alloys using thermal oxidation in air. EIS was employed to measure the corrosion resistance of the Zr-Ti alloys in simulated physiological solutions of a wide pH range (namely 3 ≤ pH ≤ 8) at 37 °C, and the best results were obtained for the alloys pre-treated at 500 °C. The formation of the passivating oxide layers in simulated physiological solution was monitored <i>in situ</i> using scanning electrochemical microscopy (SECM), finding a transition from an electrochemically active surface, characteristic of the bare metal, to the heterogeneous formation of oxide layers behaving as insulating surfaces towards electron transfer reactions.https://www.mdpi.com/2075-4701/10/2/166zr-ti binary alloysbiomaterialsurface modificationcorrosion resistanceelectrochemical techniques |
| spellingShingle | Javier Izquierdo Daniel Mareci Georgiana Bolat Juan J. Santana Raquel Rodríguez-Raposo Luis C. Fernández-Mérida Liviu Burtan Lucia C. Trincă Ricardo M. Souto Improvement of the Corrosion Resistance of Biomedical Zr-Ti Alloys Using a Thermal Oxidation Treatment Metals zr-ti binary alloys biomaterial surface modification corrosion resistance electrochemical techniques |
| title | Improvement of the Corrosion Resistance of Biomedical Zr-Ti Alloys Using a Thermal Oxidation Treatment |
| title_full | Improvement of the Corrosion Resistance of Biomedical Zr-Ti Alloys Using a Thermal Oxidation Treatment |
| title_fullStr | Improvement of the Corrosion Resistance of Biomedical Zr-Ti Alloys Using a Thermal Oxidation Treatment |
| title_full_unstemmed | Improvement of the Corrosion Resistance of Biomedical Zr-Ti Alloys Using a Thermal Oxidation Treatment |
| title_short | Improvement of the Corrosion Resistance of Biomedical Zr-Ti Alloys Using a Thermal Oxidation Treatment |
| title_sort | improvement of the corrosion resistance of biomedical zr ti alloys using a thermal oxidation treatment |
| topic | zr-ti binary alloys biomaterial surface modification corrosion resistance electrochemical techniques |
| url | https://www.mdpi.com/2075-4701/10/2/166 |
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