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Chromium oxide coatings with the potential for eliminating the risk of chromium ion release in orthopaedic implants
Chromium oxide coatings prepared by radiofrequency reactive magnetron sputtering on stainless steel substrates were exposed to Ringer's physiological solution and tested for their electrochemical corrosion stability using an open circuit potential measurement, potentiodynamic polarization, elec...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society Publishing
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5541545/ https://www.ncbi.nlm.nih.gov/pubmed/28791150 http://dx.doi.org/10.1098/rsos.170218 |
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author | Oje, A. M. Ogwu, A. A. |
author_facet | Oje, A. M. Ogwu, A. A. |
author_sort | Oje, A. M. |
collection | PubMed |
description | Chromium oxide coatings prepared by radiofrequency reactive magnetron sputtering on stainless steel substrates were exposed to Ringer's physiological solution and tested for their electrochemical corrosion stability using an open circuit potential measurement, potentiodynamic polarization, electrochemical impedance spectroscopy and Mott–Schottky analysis. The coatings were found to be predominantly Cr(2)O(3), based on the observation of the dominance of [Formula: see text] and E(g) symmetric modes in our Raman spectroscopic investigation and the E(u) vibrational modes in our Fourier transform infrared spectroscopic measurements on the coatings. We investigated for the presence of chromium ions in Ringer's solution after all of the above electrochemical tests using atomic absorption spectroscopy, without finding a trace of chromium ions at the ppm level for coatings tested under open circuit and at the lower potentials implants are likely to experience in the human body. The coatings were further exposed to Ringer's solution for one month and tested for adhesion strength changes, and we found that they retained substantial adhesion to the substrates. We expect this finding to be significant for future orthopaedic implants where chromium ion release is still a major challenge. |
format | Online Article Text |
id | pubmed-5541545 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | The Royal Society Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-55415452017-08-08 Chromium oxide coatings with the potential for eliminating the risk of chromium ion release in orthopaedic implants Oje, A. M. Ogwu, A. A. R Soc Open Sci Engineering Chromium oxide coatings prepared by radiofrequency reactive magnetron sputtering on stainless steel substrates were exposed to Ringer's physiological solution and tested for their electrochemical corrosion stability using an open circuit potential measurement, potentiodynamic polarization, electrochemical impedance spectroscopy and Mott–Schottky analysis. The coatings were found to be predominantly Cr(2)O(3), based on the observation of the dominance of [Formula: see text] and E(g) symmetric modes in our Raman spectroscopic investigation and the E(u) vibrational modes in our Fourier transform infrared spectroscopic measurements on the coatings. We investigated for the presence of chromium ions in Ringer's solution after all of the above electrochemical tests using atomic absorption spectroscopy, without finding a trace of chromium ions at the ppm level for coatings tested under open circuit and at the lower potentials implants are likely to experience in the human body. The coatings were further exposed to Ringer's solution for one month and tested for adhesion strength changes, and we found that they retained substantial adhesion to the substrates. We expect this finding to be significant for future orthopaedic implants where chromium ion release is still a major challenge. The Royal Society Publishing 2017-07-05 /pmc/articles/PMC5541545/ /pubmed/28791150 http://dx.doi.org/10.1098/rsos.170218 Text en © 2017 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Engineering Oje, A. M. Ogwu, A. A. Chromium oxide coatings with the potential for eliminating the risk of chromium ion release in orthopaedic implants |
title | Chromium oxide coatings with the potential for eliminating the risk of chromium ion release in orthopaedic implants |
title_full | Chromium oxide coatings with the potential for eliminating the risk of chromium ion release in orthopaedic implants |
title_fullStr | Chromium oxide coatings with the potential for eliminating the risk of chromium ion release in orthopaedic implants |
title_full_unstemmed | Chromium oxide coatings with the potential for eliminating the risk of chromium ion release in orthopaedic implants |
title_short | Chromium oxide coatings with the potential for eliminating the risk of chromium ion release in orthopaedic implants |
title_sort | chromium oxide coatings with the potential for eliminating the risk of chromium ion release in orthopaedic implants |
topic | Engineering |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5541545/ https://www.ncbi.nlm.nih.gov/pubmed/28791150 http://dx.doi.org/10.1098/rsos.170218 |
work_keys_str_mv | AT ojeam chromiumoxidecoatingswiththepotentialforeliminatingtheriskofchromiumionreleaseinorthopaedicimplants AT ogwuaa chromiumoxidecoatingswiththepotentialforeliminatingtheriskofchromiumionreleaseinorthopaedicimplants |