Cargando…

The Influence of Plasma Treatment on the Corrosion and Biocompatibility of Magnesium

In our study, plasma surface modification was employed to tailor the surface properties of magnesium in terms of surface chemistry, topography, and wettability. For two sets of samples, the plasma treatment involved two steps using two different gases (hydrogen and oxygen), while one set of samples...

Descripción completa

Detalles Bibliográficos
Autores principales: Kocijan, Aleksandra, Kovač, Janez, Junkar, Ita, Resnik, Matic, Kononenko, Veno, Conradi, Marjetka
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9609099/
https://www.ncbi.nlm.nih.gov/pubmed/36295470
http://dx.doi.org/10.3390/ma15207405
_version_ 1784818934263840768
author Kocijan, Aleksandra
Kovač, Janez
Junkar, Ita
Resnik, Matic
Kononenko, Veno
Conradi, Marjetka
author_facet Kocijan, Aleksandra
Kovač, Janez
Junkar, Ita
Resnik, Matic
Kononenko, Veno
Conradi, Marjetka
author_sort Kocijan, Aleksandra
collection PubMed
description In our study, plasma surface modification was employed to tailor the surface properties of magnesium in terms of surface chemistry, topography, and wettability. For two sets of samples, the plasma treatment involved two steps using two different gases (hydrogen and oxygen), while one set of samples was treated with one step only using oxygen. X-ray photoelectron spectroscopy (XPS) was applied to determine the surface composition, oxidation state of the elements, and the thickness of the surface oxide layer on the Mg samples after different plasma treatments. The surface morphology was characterised using atomic force microscopy (AFM) and scanning electron microscopy (SEM). The wettability was analysed by measuring the static water-contact angles and the corrosion was evaluated using potentiodynamic measurements. The interaction of the live cells with the differently modified Mg surfaces was evaluated in terms of biocompatibility using MG-63 cells (human bone osteosarcoma cells). We have shown that a plasma surface treatment significantly decreased the carbon content and the formation of a 15–20-nm-thick MgO layer was observed. This improves the corrosion resistance, while the biocompatibility was retained, compared to the untreated Mg. A plasma surface treatment is therefore an important step in the development of novel surfaces with improved corrosion resistance for magnesium in biomedical applications.
format Online
Article
Text
id pubmed-9609099
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-96090992022-10-28 The Influence of Plasma Treatment on the Corrosion and Biocompatibility of Magnesium Kocijan, Aleksandra Kovač, Janez Junkar, Ita Resnik, Matic Kononenko, Veno Conradi, Marjetka Materials (Basel) Article In our study, plasma surface modification was employed to tailor the surface properties of magnesium in terms of surface chemistry, topography, and wettability. For two sets of samples, the plasma treatment involved two steps using two different gases (hydrogen and oxygen), while one set of samples was treated with one step only using oxygen. X-ray photoelectron spectroscopy (XPS) was applied to determine the surface composition, oxidation state of the elements, and the thickness of the surface oxide layer on the Mg samples after different plasma treatments. The surface morphology was characterised using atomic force microscopy (AFM) and scanning electron microscopy (SEM). The wettability was analysed by measuring the static water-contact angles and the corrosion was evaluated using potentiodynamic measurements. The interaction of the live cells with the differently modified Mg surfaces was evaluated in terms of biocompatibility using MG-63 cells (human bone osteosarcoma cells). We have shown that a plasma surface treatment significantly decreased the carbon content and the formation of a 15–20-nm-thick MgO layer was observed. This improves the corrosion resistance, while the biocompatibility was retained, compared to the untreated Mg. A plasma surface treatment is therefore an important step in the development of novel surfaces with improved corrosion resistance for magnesium in biomedical applications. MDPI 2022-10-21 /pmc/articles/PMC9609099/ /pubmed/36295470 http://dx.doi.org/10.3390/ma15207405 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kocijan, Aleksandra
Kovač, Janez
Junkar, Ita
Resnik, Matic
Kononenko, Veno
Conradi, Marjetka
The Influence of Plasma Treatment on the Corrosion and Biocompatibility of Magnesium
title The Influence of Plasma Treatment on the Corrosion and Biocompatibility of Magnesium
title_full The Influence of Plasma Treatment on the Corrosion and Biocompatibility of Magnesium
title_fullStr The Influence of Plasma Treatment on the Corrosion and Biocompatibility of Magnesium
title_full_unstemmed The Influence of Plasma Treatment on the Corrosion and Biocompatibility of Magnesium
title_short The Influence of Plasma Treatment on the Corrosion and Biocompatibility of Magnesium
title_sort influence of plasma treatment on the corrosion and biocompatibility of magnesium
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9609099/
https://www.ncbi.nlm.nih.gov/pubmed/36295470
http://dx.doi.org/10.3390/ma15207405
work_keys_str_mv AT kocijanaleksandra theinfluenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium
AT kovacjanez theinfluenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium
AT junkarita theinfluenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium
AT resnikmatic theinfluenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium
AT kononenkoveno theinfluenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium
AT conradimarjetka theinfluenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium
AT kocijanaleksandra influenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium
AT kovacjanez influenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium
AT junkarita influenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium
AT resnikmatic influenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium
AT kononenkoveno influenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium
AT conradimarjetka influenceofplasmatreatmentonthecorrosionandbiocompatibilityofmagnesium