Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

The Effect of Seeding on Preparation of $ZrO_2/Al_2O_3$ Composite by Sol-Gel Method

Sol-Gel법에 의한 $ZrO_2/Al_2O_3$ 복합체의 제조에 미치느 Seeding 효과

  • 김선욱 (부산대학교 무기재료공학과) ;
  • 주치홍 (부산대학교 무기재료공학과) ;
  • 장윤식 (부산대학교 무기재료공학과) ;
  • 손영국 (부산대학교 무기재료공학과) ;
  • 박홍채 (부산대학교 무기재료공학과)
  • Published : 1993.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

The effect of $\alpha$-Al2O3 seeding on preparation of zirconia/alumina gel fragment prepared by sol-gel processing was characterized through XRD, SEM, TG/DTA and IR analysis. Aluminum isopropoxide and zirconium butoxide were used as starting materials. $\alpha$-Al2O3 seeding restrained grain growth of alumina and zirconia, and decreased tetragonal to monoclinic phase transformation of zirconia on cooling. Therefore, fine zirconia-toughened alumina composite having the relative sintered density of about 98% of theoretical at 140$0^{\circ}C$ for 2h could be obtained.

Keywords

References

  1. J. Am. Ceram. Soc. v.59 no.1-2 Fracture Toughening of Alumina with an Unstabilized ZrO₂Dispersed Phase N. Claussen
  2. J. Mat. Sci. Lett. v.3 Microstructure and Performance of an Alumine-Zirconia Tool Bit R.C. Garvie
  3. J. Am. Ceram. Soc. v.65 no.12 Stability of Tetragonal ZrO₂Particles in Ceramic Matrices A.H. Heuer
  4. Advances in Ceramics v.3 Design of Transformation-Toughened Ceramics N. Claussen;M. Ruhle;A.H. Heuer(ed.);L.W. Hobbs(ed.)
  5. J. Am. Ceram. Soc. v.66 no.10 Uniformity of Al₂O₃-ZrO₂ Composites by Colloidal Filtration L.A. Aksay;F.F. Lange;B.I. Davis
  6. Advances in Ceramics v.12 Al₂O₃-ZrO₂Ceramics Prepared from CVD Powders S. Hori;M. Yoshimura;S. Somiya;N. Claussen(ed.);A.H. Heuer(ed.);M. Ruhle(ed.)
  7. J. Am. Ceram. Soc. v.67 no.7 Preparation of Alumina-Zirconia Powderes by Evaporative Decomposition of Solutions D.W. Sproson;G.L. Messing
  8. Am. Ceram. Soc. Bull. v.63 no.3 Fine Grained Al₂O₃-ZrO₃Ceramics by Hydrothermal Reaction Sintering S. Somiya;S. Kikugawa;M. Yoshimura
  9. J. Am. Ceram. Soc. v.68 no.2 Preparation of Alumina-Zirconia Powders by Zirconium Alkoxide Hydrolysis B. Fegley, Jr.;P. White;H.K. Bowen
  10. Ceramic Powder Science-Ⅱ Production of Alumina-Zirconia Composite Ceramics by Nonsolvent Flocculation of Polymer-Containing Powder Dispersions W.C. Moffatt;P. White;H.K. Bowen;G.L. Messing(ed.);E.R. Fuller(ed.);H. Hausner(ed.)
  11. J. Am. Ceram. Soc. v.64 no.1 Transient Thermal Stress Behavior in ZTA P.E. Becher
  12. Better Ceramics through Chemistry, Materials Research Society v.32 Processing of Advanced Ceramics Composites R.W. Rice;C.J. Brinker(ed.);D.E. Clark(ed.);D.R. Ulrich(ed.)
  13. J. Am. Ceram. Soc. v.67 no.11 Enhanced Densification of Boehmite Sol-Gel by Alpha Alumina Seeding M. Kumagai;G.L. Messing
  14. J. Am. Ceram. Soc. v.68 no.9 Controlled Transformation and Sintering of a Boehmiter Sol-Gel by Alpha Alumine Seeding M. Kumagai;G.L. Messing
  15. Am. Ceram. Soc. Bull. v.54 no.3 Alumina Sol Preparation from Alkoxides B.E. Yoldas
  16. J. Am. Ceram. Soc. Calibration Curve for Quantitative Analysis of Monoclinc-Tetragonal ZrO₂ System by X-ray Diffraction H. Toraya;M. Yoshimura;S. Somiya