Article ID Journal Published Year Pages File Type
1607054 Journal of Alloys and Compounds 2016 9 Pages PDF
Abstract

•Mg–Nb alloy films were produced in a wide range of Nb concentrations.•The alloys are promising for in vivo applications.•Passivity was reached in a balanced salt solution when Nb/Mg atomic ratio was one quarter.•A distinctive Nb-enriched network was found within the alloys.

Mg–Nb alloy films have been formed in a wide range of Nb concentrations using the magnetron sputtering technique. The systems are of interest in biomedical applications in-vivo. A distinctive distribution of Nb over Mg matrix was determined by scanning transmission electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. Corrosion behaviour was studied in a balanced salt solution with a physiological pH. Experiments were performed by solution analysis, dc-voltammetry, quartz crystal microgravimetry, X-ray photoelectron spectroscopy and electron microscopy. Quasi-passivity was reached at Nb/Mg atomic concentration ratio of one quarter. It has been shown that corrosion activity could be adjusted according to biomedical requirements by varying Nb concentration.

Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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