Ti과 Ti합금의 SBF에서 Apatite 형성 관찰 및 부식거동 테스트

이승우; 김윤종; 최재우; 박중근; 김원수; 김택남; Seung-Woo Lee; Yun-Jong Kim; Je-Woo Choi; Joong-Keun Park; Won-Soo Kim; Taik-Nam Kim

Korean Journal of Materials Research, Vol.15, No.10, 671-677, October, 2005

DOI10.3740/MRSK.2005.15.10.671 Export Citation

Ti과 Ti합금의 SBF에서 Apatite 형성 관찰 및 부식거동 테스트

Corrosion Analysis and Apatite Forming Ability of Ti and Ti-Alloys in SBF Solution

이승우^†, 김윤종, 최재우, 박중근¹, 김원수², 김택남

배재대학교 재료공학과
¹한국과학기술원 재료공학과
²대전보건대학 치기공과

Seung-Woo Lee^†, Yun-Jong Kim, Je-Woo Choi, Joong-Keun Park¹, Won-Soo Kim², and Taik-Nam Kim

Department of Materials Engineering, Graduate School of Paichai University, 439-6, Doma2-dong, Seo-gu, Daejeon, 302-162, Korea
¹Department of Materials Science & Engineering, KIST, 373-1, Guseong-dong, Yuseong-gu, Daejeon, 305-701, Korea
²Dept. of Dental Laboratory Technology, Daejeon Health Science College, Korea

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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, [Math Processing Error] 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 [Math Processing Error] 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 [Math Processing Error] in an incubator for different period of time. The test revealed that [Math Processing Error] 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. [Math Processing Error] showed higher corrosion potential and corrosion current compared to other samples.

Keywords:ECAP;NaOH;simulated body fluid;polarization curve test

[References]

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[1] Kim HM, Miyaji F, Kokubo T, Nakamura T, J. Biomed. Mater. Res., 38, 121 (1997)

[2] Stolyarov VV, Zhu YT, Alexandrov IV, Lowe TC, Valiev RZ, Mater. Sci. Eng. A, 299, 59 (2001)

[3] Iwahashi Y, Horita Z, Nemoto M, Langdon TG, Acta Mater., 46, 3317 (1998)

[4] Lopez MF, Gutierrez A, Jimenez JA, Electrochim. Acta, 47(9), 1359 (2002)

[5] Gurappa I, Mater. Character., 49, 73 (2002)

[6] Garcia-Alonso MC, Saldama L, Valles G, Gonzalez-Carrasco JL, Biomater., 24, 19 (2003)

[7] Lopez MF, Gutierrez A, Jimenez JA, Electrochimica Acta, 46, 1359 (2002)

[8] Kamitakahara M, Kawashita M, Kokubo T, Nakamura T, Biomater., 22, 3191 (2001)

[9] Aparicio C, Gil FJ, Fonseca C, Barbosa M, Planell JA, Biomater., 24, 263 (2003)

[10] Kim HM, Miyaji F, Kokubo T, J. Biomed. Mater. Res., 45, 100 (1999)