Metall. Res. Technol.
Volume 116, Number 4, 2019
|Number of page(s)||8|
|Published online||28 June 2019|
Facile fabrication of silicon coating for improving biodegradation and cytocompatibility of pure magnesium by hydrothermal method
College of Ecological Environment and Urban Construction, Fujian University of Technology,
350118 PR China
* e-mail: email@example.com
Accepted: 7 January 2019
In this study, a bioactive silicon coating was fabricated for reducing the degradation rate and enhancing the cytocompatibility of the pure magnesium. The morphology and phase of coating were characterized by a scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffractometer (XRD), and X-ray photoelectron spectroscopy (XPS), respectively. The electrochemical and immersion tests were conducted in a simulated body fluid to evaluate the in vitro degradation behavior of the Si-coated sample. Cell viability and cell adhesion assays of human osteosarcoma cells were performed to determine the biocompatibility of the Si-coating. The XRD pattern suggested that MgO, Mg2SiO4 and SiO2 were formed on the Si-coated sample. The results of the electrochemical and immersion tests showed that the Si-coating could significantly decrease degradation rate of the pure magnesium. Meanwhile, the Si-coating could significantly promote the cell adhesion, migration and proliferation in vitro. It is considered that the Si-coating showed a promising application in improving the anticorrosion and biocompatibility of the pure magnesium.
Key words: magnesium alloy / chemical deposition / silicon conversion coating / degradation / cytocompatibility
© EDP Sciences, 2019
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