Corrosion behavior of Ti-5Ag alloy with and without thermal oxidation in artificial saliva solution
1Center for Biomedical Materials and Engineering, Harbin Engineering University, Harbin 150001, China.
Objectives:
The aim of the present study was to investigate the effect of thermal oxidation on the corrosion behavior of Ti-5Ag alloy.
Methods:
The microstructure of Ti-5Ag alloy without and with thermal oxidization treatment were characterized, with commercial pure (CP) Ti as control, by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The electrochemical behavior in artificial saliva solution was compared for CP Ti, Ti-5Ag alloy with and without thermal oxidation.
Results:
Compared to CP Ti, Ti-5Ag alloy without thermal oxidization treatment possessed much lower current density, higher open circuit potential, larger impedance value, and its corrosion resistance could be further improved with thermal oxidation.
Significance:
The corrosion resistance was enhanced by Ag addition for titanium and could be further improved by thermal oxidation.
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