Surface Analysis of Biodegradable Mg-Alloys after Immersion in Simulated Body Fluid
Steiner Petrovič, Darja ; Mandrino, Djordje ; Šarler, Božidar ; Horky, Jelena ; Ojdanic, Andrea ; Zehetbauer, Michael J and Orlov, Dmytro LU
(2020)
In Materials
13(7).
- Abstract
Two binary biodegradable Mg-alloys and one ternary biodegradable Mg-alloy (Mg-0.3Ca, Mg-5Zn and Mg-5Zn-0.3Ca, all in wt%) were investigated. Surface-sensitive X-ray photoelectron spectroscopy analyses (XPS) of the alloy surfaces before and after immersion in simulated body fluid (SBF) were performed. The XPS analysis of the samples before the immersion in SBF revealed that the top layer of the alloy might have a non-homogeneous composition relative to the bulk. Degradation during the SBF immersion testing was monitored by measuring the evolution of H2. It was possible to evaluate the thickness of the sample degradation layers after the SBF immersion based on scanning electron microscopy (SEM) of the tilted sample. The thickness was in... (More)
Two binary biodegradable Mg-alloys and one ternary biodegradable Mg-alloy (Mg-0.3Ca, Mg-5Zn and Mg-5Zn-0.3Ca, all in wt%) were investigated. Surface-sensitive X-ray photoelectron spectroscopy analyses (XPS) of the alloy surfaces before and after immersion in simulated body fluid (SBF) were performed. The XPS analysis of the samples before the immersion in SBF revealed that the top layer of the alloy might have a non-homogeneous composition relative to the bulk. Degradation during the SBF immersion testing was monitored by measuring the evolution of H2. It was possible to evaluate the thickness of the sample degradation layers after the SBF immersion based on scanning electron microscopy (SEM) of the tilted sample. The thickness was in the order of 10-100 µm. The typical bio-corrosion products of all of the investigated alloys consisted of Mg, Ca, P and O, which suggests the formation of apatite (calcium phosphate hydroxide), magnesium hydrogen phosphate hydrate and magnesium hydroxide. The bioapplicability of the analyzed alloys with regard to surface composition and degradation kinetics is discussed.
(Less)
- author
- Steiner Petrovič, Darja
; Mandrino, Djordje
; Šarler, Božidar
; Horky, Jelena
; Ojdanic, Andrea
; Zehetbauer, Michael J
and Orlov, Dmytro
LU
- organization
- publishing date
- 2020-04-08
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Materials
- volume
- 13
- issue
- 7
- publisher
- MDPI AG
- external identifiers
-
- scopus:85082956170
- pmid:32276432
- ISSN
- 1996-1944
- DOI
- 10.3390/ma13071740
- project
- Topologically designed magnesium alloys for biomedical applications
- language
- English
- LU publication?
- yes
- id
- eac423f0-2c1d-4b5e-8654-d679bde0d3c0
- date added to LUP
- 2020-04-15 08:38:37
- date last changed
- 2024-08-21 19:38:13
@article{eac423f0-2c1d-4b5e-8654-d679bde0d3c0,
abstract = {{<p>Two binary biodegradable Mg-alloys and one ternary biodegradable Mg-alloy (Mg-0.3Ca, Mg-5Zn and Mg-5Zn-0.3Ca, all in wt%) were investigated. Surface-sensitive X-ray photoelectron spectroscopy analyses (XPS) of the alloy surfaces before and after immersion in simulated body fluid (SBF) were performed. The XPS analysis of the samples before the immersion in SBF revealed that the top layer of the alloy might have a non-homogeneous composition relative to the bulk. Degradation during the SBF immersion testing was monitored by measuring the evolution of H2. It was possible to evaluate the thickness of the sample degradation layers after the SBF immersion based on scanning electron microscopy (SEM) of the tilted sample. The thickness was in the order of 10-100 µm. The typical bio-corrosion products of all of the investigated alloys consisted of Mg, Ca, P and O, which suggests the formation of apatite (calcium phosphate hydroxide), magnesium hydrogen phosphate hydrate and magnesium hydroxide. The bioapplicability of the analyzed alloys with regard to surface composition and degradation kinetics is discussed.</p>}},
author = {{Steiner Petrovič, Darja and Mandrino, Djordje and Šarler, Božidar and Horky, Jelena and Ojdanic, Andrea and Zehetbauer, Michael J and Orlov, Dmytro}},
issn = {{1996-1944}},
language = {{eng}},
month = {{04}},
number = {{7}},
publisher = {{MDPI AG}},
series = {{Materials}},
title = {{Surface Analysis of Biodegradable Mg-Alloys after Immersion in Simulated Body Fluid}},
url = {{http://dx.doi.org/10.3390/ma13071740}},
doi = {{10.3390/ma13071740}},
volume = {{13}},
year = {{2020}},
}