Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effects of Nb Addition on Corrosion Resistance and Cytotoxicity Behavior of Ti Alloys

Nb이 첨가된 Ti합금의 내식성 및 생체안정성

  • Lee, Doh-Jae (Dept. of Materials Science and Engineering, Chonnam National University) ;
  • Lee, Kwang-Min (Dept. of Materials Science and Engineering, Chonnam National University) ;
  • Lee, Kyung-Ku (Dept. of Materials Science and Engineering, Chonnam National University) ;
  • Ryu, Chang-Nam (Dept. of Materials Science and Engineering, Chonnam National University) ;
  • Oh, Tae-Wook (Dept. of Materials Science and Engineering, Chonnam National University) ;
  • Kim, Soo-Hag (Dept. of Materials Science and Engineering, Chonnam National University) ;
  • Yoon, Tack-Lim (Dept. of Orthopedics Surgery, Chonnam National University)
  • 이도재 (전남대학교 공과대학 신소재공학부) ;
  • 이광민 (전남대학교 공과대학 신소재공학부) ;
  • 이경구 (전남대학교 공과대학 신소재공학부) ;
  • 유창남 (전남대학교 공과대학 신소재공학부) ;
  • 오태욱 (전남대학교 공과대학 신소재공학부) ;
  • 김수학 (전남대학교 공과대학 신소재공학부) ;
  • 윤택림 (전남대학교 의과대학 정형외과)
  • Published : 2003.11.01
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Abstract

The corrosion resistance and cytotoxicity behavior of Ti alloys were studied as a function of Nb contents(3wt.%Nb, 20wt.%Nb, 40wt.%Nb). Ti-Nb alloys were melted by vacuum arc furnace and then rolled to 50% reduction ratio after homogenized at 105$0^{\circ}C$ for 24hrs. The corrosion resistance of Ti-Nb alloys were investigated by potentiodynamic polarization test in the 0.9% NaCl and 5% HCI solution. Biocompatibility of Ti-Nb alloys was evaluated by cytotoxicity test. The results can be summarized as follows 1) The microstructure change from equiaxial to acicular and the increased $\beta$ phase in Ti-Nb alloys were obtained as the Nb content increased. 2) For the corrosion test in the solution of 0.9% NaCl and 5% HCI, the corrosion behavior of Ti-Nb alloys was similar to ASTM grade 2 CP Ti. 3) For the cytotoxicity test, Ti-Nb alloys showed excellent biocompatibility compared to ASTM grade 2 CP Ti, 316L STS and Co-Cr alloys.

Keywords

References

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