Author: Anandan C. Mohan L.
Publisher: Springer Publishing Company
ISSN: 1059-9495
Source: Journal of Materials Engineering and Performance, Vol.22, Iss.11, 2013-11, pp. : 3507-3516
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Abstract
Titanium alloy beta 21S was implanted with oxygen ions by plasma immersion ion implantation. The implanted surface was characterized by micro-Raman, XPS and FESEM before and after potentiodynamic polarization and electrochemical impedance studies in Hanks’ solution and after incubation in Hanks’ solution for 1 and 7 days. The investigations show that the native oxide on the sample is replaced by a compact oxide by implantation and the new oxide layer behaves in a different way in that a two layer model is required to explain the observed electrochemical impedance data. The analysis of layers formed in the electrochemical studies and after incubation in Hanks’ solution by XPS and FESEM shows that the new oxide surface is capable of inducing apatite growth on it.
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