Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Preparation of $Al_2O_3$-$ZrO_2$Composite Powders by the Use of Emulsions(IV) : Emulsion-Spray Pyrolysis Method

에멀젼을 이용한 $Al_2O_3$-$ZrO_2$ 복합분체의 제조(IV) : 에멀젼-분무열분해법

  • 현상훈 (연세대학교 요업공학과) ;
  • 김동준 (연세대학교 요업공학과)
  • Published : 1990.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

A new process of emulsiion-spray pyrolysis for synthesizing ceramic powders was developed and the characteristics of Al2O3-20w/o ZrO2 composite powders prepared by this method were investigated. The composite powders synthesized in this study were spherical dense particles with 0.1~0.4${\mu}{\textrm}{m}$ of diameter. As found in powders derived by the emulsion-hot kerosene drying method, all zirconia in Al2O3-20w/o ZrO2 powders heat-treated at 120$0^{\circ}C$ was in the tetragonal form at room temperature. The relative density and the fracture toughness of composites sintered at 1$650^{\circ}C$ for 4hrs were 95% and 5.2MPa.m1/2, respectively.

Keywords

References

  1. Am. Ceram. Soc. Bull v.60 no.2 Nonconventional Powder Preparation Techniques D.W Johnson, Jr.
  2. J. Korean. Ceramic Soc v.24 no.6 Preparation of Al₂O₃-ZrO₂Composite Powders by the Use of Emulsions:Ⅰ. Thermodynamic Model of the Emulsion Stability S.H. Hyun;J.G. Paik;S.R. Song
  3. J. Korean Ceramic Soc. v.25 no.3 Prepapation of Al₂O₃-ZrO₂Composite Powders by the Use of Emulsions:Ⅱ. Emulsion-Hot Kerosene Drying Method S.H. Hyun;J.G. Paik
  4. M.E. Thesis Preparation and Characteristics of Al₂O₃-ZrO₂Composite Powders by Emulsion-Hot Kerosene Drying Method J.G. Paik
  5. M.E. Thesis Preparation of Spinel and Al₂O₃-ZrO₂Composite Powders by the Emulsion Technique E.S. Kim
  6. Am. Ceram. Soc. Bull. v.56 Preparation of Fine Oxide Powders by Evaporative Decomposition of Solutions D.M. Roy;R.R. Neurgaonkar;T.P.O. Holleran;R. Roy
  7. J. Am. Ceram. Soc. v.67 no.5 Preparation of Alumina-Zirconia Powders by Evaporative Decomposition of Solutions D.W. Spronson;G.C. Messing
  8. Ceramic Powders Use of Emulsion in the Preparation of Ceramic Powders P. Reynen;H. Bastius;M. Fiedler;P. Vincenzini(ed)
  9. Powder Metall. Int. v.8 no.2 Hot Kerosene Drying. A Technique to Prepare Reactive Homogeneous Ceramic Powders from Salt Solutions P. Reynen;H. Bastius
  10. M.E. Thesis Preparation of Alumina-Zirconia Composite Powders by the Emulsion-Spray Pyrolysis Method D.J. Kim
  11. J. Sci. Instruments v.22 The Cascade Impactor, An Instrument for Sampling Coarse Aerosols K.R. May
  12. J. Sci. Instruments v.27 The Measurenent of Airborne Droplets by the Magnesium Oxide Method K.R. May
  13. J. Am. Ceram. Soc v.55 no.6 Phase Analysis in Zirconia Systems R C Garive;P.S. Nicholson
  14. J Am. Ceram. Soc. v.59 no.7;8 Fracture Toughness Determination by Indentation A.G. Evans;E.A. Charles
  15. 第 21回 窯業基礎討論會講演要旨集 新原皓一
  16. J Am. Ceram. Soc. v.59 Equilibrium Penny-like Cracks in Indentation Fracture B.R. Lawn;E.R. Fuller
  17. M.S. Thesis Synthesis of Alumina from Al(NO₃)₃·9H₂O by the Evaporative Decomposition of Solution Process R.R. Ciminelli
  18. J. Phys. Chem. v.69 no.4 The Occurrence of Metastable Zirconia as a Crystallite Size Effect R.C. Garvie
  19. J. Am. Ceram. Soc. v.45 Effect of Pressure on Monoclinic-Tetragonal Transition of Zirconia Thermodynamics E.D. Whiteney
  20. J. Am. Ceram. Soc. v.67 no.3 Hindrance of Grain Growth in Al₂O₃by ZrO₂ F.F. Lange;M.M Hirlinger
  21. J. Am. Ceram. Soc. v.59 no.1;2 Fracture Toughness of Al₂O₃with Unstabilized Dispersed Phase N. Claussen
  22. J. Mater. Sci. v.17 no.1 Transformation Toughening F.F. Lange