Does acid pickling of Mg-Ca alloy enhance biomineralization?
| Autor: | M. A. Joseph, VP Muhammad Rabeeh, Shebeer A. Rahim, T. Hanas |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Biomineralization
Surface characterization Materials science Scanning electron microscope Simulated body fluid 02 engineering and technology 01 natural sciences Corrosion chemistry.chemical_compound X-ray photoelectron spectroscopy 0103 physical sciences Pickling Fourier transform infrared spectroscopy Phosphoric acid 010302 applied physics Mining engineering. Metallurgy TN1-997 technology industry and agriculture Metals and Alloys Surface pretreatment 021001 nanoscience & nanotechnology Inorganic acid pickling Degradation rate chemistry Chemical engineering Mechanics of Materials Surface modification 0210 nano-technology Magnesium alloy |
| Zdroj: | Journal of Magnesium and Alloys, Vol 9, Iss 3, Pp 1028-1038 (2021) |
| ISSN: | 2213-9567 |
| DOI: | 10.1016/j.jma.2020.12.002 |
| Popis: | The mechanical and physical properties of biodegradable magnesium (Mg) alloys make them suitable for temporary orthopaedic implants. The success of these alloys depends on their performance in the physiological environment. In the present work, surface modification of Mg-Ca binary alloy by acid pickling for better biomineralization and controlled biodegradation is explored. The corrosion rates of nitric and phosphoric acid treated samples were analysed by conducting electrochemical corrosion tests. In vitro degradation behaviour was studied using immersion test in simulated body fluid (SBF). The sample surfaces were characterized using scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). It is seen that acid pickling leads to significant improvement in biomineralization and develop in situ calcium phosphate (CaP) coating on the sample surfaces. In addition, the treated samples recorded a reduced degradation rate in the SBF compared to untreated samples. Thus, acid pickling is suggested as an effective surface treatment method to tailor the biomineralization and degradation behaviour of the Mg-Ca alloy in the physiological environment. |
| Databáze: | OpenAIRE |
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