Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
권호 표지

Fabrication of functionally graded materials of hydroxyapatite and titanium

Hydroxyapatite 와 titanium의 경사 기능 재료 제조

  • 김성진 (금오공과대학교 재료공학과) ;
  • 박지환 (금오공과대학교 재료공학과) ;
  • 조경식 (금오공과대학교 재료공학과) ;
  • 박노진 (금오공과대학교 재료공학과)
  • Published : 2002.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Hydroxyapatite/titanium composites were prepared as 4-layered functionally graded materials (FGM) using a spark plasma sintering (SPS) apparatus. The maximum density and the biaxial strength of hydroxyapatite/titanium composites were achieved by SPS with a holding time 8 minutes at $1200^{\circ}C$. However, the hydroxyapatite was decomposed tetracalcium phosphate (TetCP) at $1100^{\circ}C$, and calcium titanate compounds ($CaTiO_3$) were formed. When titanium was added to hydroxyapatite, decomposition of hydroxyapatite was occurred easily at the low temperature.

수산화아파타이트/티타늄 복합체를 스파크 플라즈마 소결(SPS) 장치를 이용하여 4층 경사 기능 재료 (FGM)로 제조하였다. 수산화아파타이트/티타늄 복합체의 최대 밀도와 이축 강도는 $1200^{\circ}C$에서 8분 동안의 SPS 조건에서 얻었다. 그러나, 수산화아파타이트는 $1100^{\circ}C$에서 사칼슘인산염(TetCP)으로 분해되었고, 티탄산칼숨 화합물 ($CaTiO_3$)이 형성되었다. 수산화아파타이트에 티타늄을 첨가하면 수산화아파타이트가 저온에서 쉽게 분해되었다.

Keywords

References

  1. M. Jarcho, C.H. Bolen, M.B. Tromas, J. Bobick, J.E. Kay and R.H. Doremu, 'Hydroxyapatite Synthesis and Characterization in Dense Polycrystalline Form', J. Mater. Sci. II (1976) 2027
  2. J.S. Hanker and B.L. Giammara, 'Biomaterials and Biomedical Devices', Science 242 (1988) 885
  3. P. Van Landuyt, F. Li, J.P. Keustermans, J.M. Streydio, F. Delannay and E. Munting, 'The Influence of High Sintering Temperatures on the Mechanical Properties of Hydroxyapatite', J. Mater. Sci.: Mater. Med. 6 (1995) 8
  4. L.L. Hench and J. Wilson, 'Bioceramics', MRS Bull., September (1991) 62
  5. H. Aoki, 'Medical Applications of Hydroxyapatite', A. Ishiyaku, Ed. (EuroAmerican, Inc., 1994) p. 31
  6. S. Kim, K.-S. Cho and N.-J. Park, 'Fabrication of Func-tionally Graded Materials of Hydroxyapatite and Zirco-nia', J. Kor. Assoc. Cryst. Growth 11 (2001) 115
  7. J.H. Shin and K.H. Lee, 'Metals as Biomaterials', Bio-materials Research 3 (1999) 28
  8. M.J. Shin, D.G. Kim and K.H. Kim, 'A Study of Sur-face Treatments of Titanium in Aqueous Solutions Con-taining Phosphate and Calcium Ions', Kor. J. Mater. Res. 8 (1998) 352
  9. J.D. Park, Y.-J. Oh and T.S. Oh, 'Crystalline Phases and Mechanical Properties of Hydroxyapatite/Ti Fabricated by Mechanical Milling and Mechanical Alloying Pro-cesses', J. Kor. Inst. of Met. & Mater. 34 (1996) 236
  10. M. Tokita, 'Trend in Advanced SPS Spark Plasma Sin-tering Systems and Technology', J. Powder Tech. Jpn. 30 (1993) 790
  11. G.C. Wei and J. Walsh, 'Rapid Sintering Method for Producing Alumina- Titanium Carbide Composite', U.S. Pat. 5,342,564 (1992)
  12. K.-S. Cho, S. Kim, S.-H. Beak, H.-I. Choi and J.-G. Lee, 'The Effects of La-Silicon Oxynitride on the Den-sification of $Si_3N_4$ Ceramics by Spark Plasma Sinter- ing J. Kor. Ceram. Soc. 38 (2001) 689
  13. S.E. Park, J.H. Lee and H.L. Lee, 'Determination of the Biaxial Strength by Ball-on-3-Ball Test', I. Kor. Ceram. Soc. 36 (1999) 225
  14. J.E.O. Ovri, 'A Parametric Study of the Biaxial Strength Test for Brittle Materials', Mater. Chem. & Phy. 66 (2000) 1
  15. J. Cihlar, A. Bachal and M. Trunec, 'Kinetics of Ther-mal Decomposition of Hydroapatite Bioceramics', J. Mater. Sci. 34 (1999) 6121
  16. T. Kijima and M. Tsutsumi, 'Preparation and Thermal Properties of Dense Polycrystalline Oxyhydroxyapa-tite', J. Am. Ceram. Soc. 62 (1979) 455
  17. H. Monma, J. Tanaka and S. Ueno, 'Thermal Behavior of '$H_3O$' in Nonstoichiometric Hydroxy- and Fluor-apatite', Gypsum & Lime 165 (1980) 60