Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Corrosion Analysis and Apatite Forming Ability of Ti and Ti-Alloys in SBF Solution

Ti과 Ti합금의 SBF에서 Apatite 형성 관찰 및 부식거동 테스트

  • Lee Seung-Woo (Department of Materials Engineering, graduate School of Paichai University) ;
  • Kim Yun-Jong (Department of Materials Engineering, graduate School of Paichai University) ;
  • Choi Je-Woo (Department of Materials Engineering, graduate School of Paichai University) ;
  • Park Joong-Keun (Department of Materials Science & Engineering, KAIST) ;
  • Kim Won-Soo (Dept. of Dental Laboratory Technology, Daejeon Health Science College) ;
  • Kim Taik-Nam (Department of Materials Engineering, graduate School of Paichai University)
  • 이승우 (배재대학교 재료공학과) ;
  • 김윤종 (배재대학교 재료공학과) ;
  • 최재우 (배재대학교 재료공학과) ;
  • 박중근 (한국과학기술원 재료공학과) ;
  • 김원수 (대전보건대학 치기공과) ;
  • 김택남 (배재대학교 재료공학과)
  • Published : 2005.10.01
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Abstract

Ti and Ti alloys are known to have excellent corrosion properties, which is an important aspect for biocompability of these implants in human body. In our study, four types of samples (Cp-Ti, Ti-6Al-4V, $0.5wt.\%$ Fe-Ti and ECAP Ti) were tested for their apatite forming ability and corrosion properties. The micropolished samples were treated with 5M NaOH solution at $60^{\circ}C$ for 24 hours. Each samples was gently washed with distilled water and heat-treated at 600"C for 1 hour. The heat-treated samples were soaked in Simulated Body Fluid (SBF) solution at $36.5^{\circ}C$ in an incubator for different period of time. The test revealed that $0.5 wt.\%$ Fe-Ti showing faster apatite growth on the surface (7th day) compared to other samples. Polarization curve test (PCT) was also carried out to determine the corrosion resistance of each samples in SBF solution. ECAP-Ti showed highest corrosion resistance compared to any other samples. $0.5wt.\%Fe-Ti$ showed higher corrosion potential and corrosion current compared to other samples.

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References

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