Ta 함량에 따른 Ti-xTa 합금의 부식특성
Corrosion Characteristics of Ti-xTa Alloys with Ta contents
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The purpose of this study was to investigate corrosion characteristics of Ti-xTa alloys with Ta contents. Ti-xTa alloys used as samples (x=30, 40%) were arc-melted under argon atmosphere of 99.9% purity. Ti-xTa alloys were homogenized for 12hr at 1000°C and then water quenched. The surface characteristics of Ti-xTa alloys were investigated using optical microscopy (OM) and X-ray diffractometer (XRD). The anodic corrosion behaviors of the specimens were examined through potentiodynamic, potentiostatic and galvanostatic test in 0.9 % NaCl solution at 36.5±1°C. After corrosion test, the surface characteristics of Ti-xTa alloys were investigated using OM. The microstructure of Ti-Ta alloy showed the beta structure with Ta content. The corrosion resistance of Ti alloy was improved by increasing Ta content and the corrosion morphology of Ti-Ta alloy showed that the site attacked by chloride ion decreased from the active to passive region with Ta content. Potential of Ti-40Ta alloy increased as time increased, whereas, current density of Ti-40Ta alloy decreased as time increased compared to Ti-30 alloy.
Abstract
The purpose of this study was to investigate corrosion characteristics of Ti-xTa alloys with Ta contents. Ti-xTa alloys used as samples (x=30, 40%) were arc-melted under argon atmosphere of 99.9% purity. Ti-xTa alloys were homogenized for 12hr at 1000°C and then water quenched. The surface characteristics of Ti-xTa alloys were investigated using optical microscopy (OM) and X-ray diffractometer (XRD). The anodic corrosion behaviors of the specimens were examined through potentiodynamic, potentiostatic and galvanostatic test in 0.9 % NaCl solution at 36.5±1°C. After corrosion test, the surface characteristics of Ti-xTa alloys were investigated using OM. The microstructure of Ti-Ta alloy showed the beta structure with Ta content. The corrosion resistance of Ti alloy was improved by increasing Ta content and the corrosion morphology of Ti-Ta alloy showed that the site attacked by chloride ion decreased from the active to passive region with Ta content. Potential of Ti-40Ta alloy increased as time increased, whereas, current density of Ti-40Ta alloy decreased as time increased compared to Ti-30 alloy.
참고문헌 (15)
- J. Black, "Handbook of Biomaterial Properties", pp.135~ (1998), Champman & Hall
- F. Andress von Recum, "Handbook of biomaterial Evaluation" (1999), Tayor & Francis
- E. kobayashi, , J. Prosthetdent, 54, pp.410~ (1985)
- M. F. Semlitsch, , Biomaterials, 13, pp.781~ (1992)
- Y. Okazaki, , J. Japan Inst. Metals, 9, pp.890~ (1996)
- A. K. shukla, , J. Alloys Comp, 389, pp.144~ (2005)
- D. Kuroda, , Mater. Sci. Eng, A, 243, pp.244~ (2001)
- H. C. Choe, , Thin solid Film, 519, pp.4652~ (2011)
- Y. L. Zhou, , Mater. Sci. Eng, A, 384, pp.92~ (2004)
- Y. L. Zhou, , Mater. Sci. Eng, A, 371, pp.283~ (2004)
- Y. L. Zhou, , Mater. Sci. Eng, A, 398, pp.28~ (2005)
- Seung Eon Kim, "Electrochemical Corrosion of Novel Beta Titanium Alloys", Metals and Materials International, 13(2), pp.151~154 (2007), 대한금속·재료학회
- Seung Eon Kim, "Elastic Modulus and In Vitro Biocompatibility of Ti-xNb and Ti-xTa Alloys", Metals and Materials International, 13(2), pp.145~149 (2007), 대한금속·재료학회
- Y. L. Zhou, , Materials Sci. and Eng., A, 29, pp.1061~ (2009)
- D. Mareci, , Acta Biomaterialia, 5, pp.3625~ (2009)