Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effects of Crystallization and Seeding on Characteristics of Al2O3-ZrO2 Powder Prepared by a Sol-Gel Method

Sol-Gel법에 의한 Al2O3-ZrO2계 분말제조에 있어서 결정화 및 Seeding 효과

  • 오한석 (연세대학교 공과대학 요업공학과) ;
  • 홍기곤 (연세대학교 공과대학 요업공학과) ;
  • 이홍림 (연세대학교 공과대학 요업공학과)
  • Published : 1988.04.01
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Abstract

$\alpha$-Al2O3-15m/o ZrO2 powder was prepared by a sol-gel method from boehmite and zirconium acetate. The transformation temperature of boehmite to $\alpha$-Al2O3 in the system Al2O3-ZrO2 was increased due to the coupled crystallization. On the other hand, the transformation temperature from boehmite to $\alpha$-Al2O3-15m/o ZrO2 could be prepared at 110$0^{\circ}C$ for 100min. The specific surface area of the product of $\alpha$-Al2O3-15m/o ZrO2 was 13.2$m^2$/g.

Keywords

References

  1. Mat. Sci. Res. v.11 Ceramics Sintered Directly from Sol-Gel P.F. Becher(et al.);H. Palmour(ed.)(et al.)
  2. Fracture Mechanics of Ceramics v.6 Fracture Toughness of Al₂O₃-ZrO₂Composites P.F. Becher(et al.);R.C. Bradt(ed.)(et al.)
  3. J. Am. Ceram. Soc. v.66 no.7 Slow Crack Growth Behavior in Transformation-Toughened Al₂O₃-ZrO₂(Y₂O₃)Ceramics P.F. Becher
  4. U.S.Pat No. 4314827 Non-Fused Aluminum Oxide Based Abrasive Materials M.A. Leitheiser;H.G. Sowman
  5. J. Am. Ceram. Soc. v.70 no.1 Microstructure and Mechnical Properties of Mullite Prepared by the Sol-Gel Method M.G.M.U Ismail(et al.)
  6. J. Am. Ceram. Soc. v.67 no.11 Enhanced Densification of Boehmite Sol-Gels by α-Al₂O₃Seeding M. Kumagai;G.L. Messing
  7. J. Non-Crys. Sol. v.88 α-Al₂O₃Transformation in Seeded Boehmite Gels R.A. Shelleman;G.L. Messing;M. Kumagai
  8. J. Am. Ceram. Soc. v.68 no.9 Lowering Crystallzation Temperatures by Seeding in Structurally Diphasic Al₂O₃-MgO Xerogels Y. Suwa(et al.)
  9. 요업학회지 v.24 no.5 Boehmite Sol-Gel 법에 의한 α-Al₂O₃분말제조시 Seeding 효과 이홍림;오한석;김경룡
  10. J. Phys. Chem. v.69 no.4 Occurence of Metastable Tetragonal Zirconia as a Crystallite Size Effect R.C. Garvie
  11. J. Phys. Chem. v.82 no.2 Stabilization of the Tetragonal Structure in Zirconia Microcrystals R.C. Garvie
  12. J. Am. Ceram. Soc. v.69 no.2 Stability of ZrO₂Phases in Ultrafine ZrO₂-Al₂O₃Mixtures Y. Murase(et al.)
  13. Ultrastructure Processing of Ceramics, Glasses, and Composites Fabrication of Zirconia Fibers form Sol-Gels E. Leroy(et al.);L.L. Hench(ed.);D.R. Ulrich(ed.)
  14. Ultrastructure Processing of Ceramics, Glasses, and Composites v.69 no.6 Coupled Grain Growth Effects in Al₂O₃/10vol% ZrO₂ E.A. Pugar;P.E.D. Morgan
  15. J. Am. Ceram. Soc. v.67 no.5 Preparation of Al₂O₃-ZrO₂Powders by Evaporative Decomposition of Solutions D.W. Sproson;G.L. Messing
  16. Ultrafine Grain Ceramics Superpasticity in Ceramics P.E.D. Morgan;J.J. Burke(ed.);N.L. Reed(ed.);V. Weiss(ed.);
  17. Ultrafine Grain Ceramics v.64 High Alumina Tailored Nuclear Waste Ceramics P.E.D. Morgan(et al.)
  18. Nature v.258 Ceramic Steel R.C. Garvie(et al.)
  19. 延世大學敎 窯業工學科 碩士學位論文 共沈法으로 製造한 Al₂O₃-ZrO₂係 세라믹스의 機械的性質 홍기곤