Improvement of Biocompatibility of Medical Ni-Ti Alloys through Forming TiO2 Thin Film

Yuji Kimura

doi:10.4028/www.scientific.net/AMR.275.182

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 275Improvement of Biocompatibility of Medical Ni-Ti...

Improvement of Biocompatibility of Medical Ni-Ti Alloys through Forming TiO₂ Thin Film

Abstract:

Ni-Ti alloys have been investigated for applying to various surgical procedures. However, little is known about the toxicity of Ni-elements and the actual conditions of surface modification of Ni-Ti alloy for preventing the toxicity of Ni. In this study, the corrosion resistance of Ni-Ti alloys was improved through making TiO2 thin film by conducting in air oxidation and reactive sputtering. These thin films were characterized using FE-SEM, XRD, XPS and AFM. And judging from the polarization curves obtained by electro-chemical measurement in quasi-living body environment, corrosion resistance of Ni-Ti super elastic alloy was evaluated. From these considerations, some trials for establishing a method for TiO2 thin film formation on the surface of Ni-Ti alloy were conducted from the view point of improving biocompatibility.

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Periodical:

Advanced Materials Research (Volume 275)

Pages:

182-185

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.275.182

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Online since:

July 2011

Authors:

Yuji Kimura

Keywords:

Air Oxidation, Air Oxidation under Suppressed Partial Pressure Oxygen Condition, Corrosion Resistance, Ni-Ti Alloy, Reactive Sputtering, Surface Modification, TiO₂ Thin Films

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References

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