Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

The Fabrication and Characteristics of Porous Alumina Ceramics by Pressureless Powder Packing Forming Method : I . Alumina

무가압분말충전성형법에 의한 다공성 세라믹스의 제조 및 특성 : I. 알루미나

  • 박정현 (연세대학교 세라믹공학과) ;
  • 황명익 (연세대학교 세라믹공학과) ;
  • 김동희 (연세대학교 세라믹공학과) ;
  • 최환욱 (연세대학교 세라믹공학과) ;
  • 김용남 (연세대학교 세라믹공학과)
  • Published : 1999.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Porous alumina was fabricated from pressureless powder packing forming method using powders granulated by spray drying. It was investigated the pore size distribution of fabricated porous alumina. The results of microstructural observation showed that intraganular pore size and intragranular pore size. At 1700$^{\circ}C$ there were no intragranular pores but it showed homogeneous distribution of intergranular pore size. The bending strength and shrinkage increased as porosity decreased. In case of thermal shock resistance sudden decrease of bending strength to $\Delta$T was not shown because intergranular large pore prevented sudden crack propagation.

Keywords

References

  1. Ceramic Transaction 31-Po-rous Materials Porous Ceramics:Proccssing and Applications M. Sheppard
  2. J. Am. Ceram. Soc. v.74 no.10 Caged Alumina Particles in Reticular Foam Edward J. A. Pope;Alex Almazan
  3. Am. Ceram. Soc. Bull. v.71 no.11 Processing of Porous Ceramics Jannine Saggio-Woyansky;Curtis E. Scott;W. P. Minnear
  4. 한국요업학회지 v.30 no.7 알루미나 한외여과막의 제조에 관한 연구(1) 유재근;이응상
  5. Metal Powder Industries Federation Powder Injection Molding Randall M. German
  6. J. Am. Ceram. Soc. v.48 no.4 Vibratory Compaction:Ⅰ,Compaction of Spherical Shapes J. E. Ayer;F E. Soppet
  7. Modern Ceramic Engineering(2nd ed.) Densification D W. Richeison
  8. Ceramic Processing Before Firing Dynamic Particle Stacking F. N. Rhines;G. C. Onoda(ed.);L. L. Hench(ed.)
  9. Modern Ceramic Engineering(2nd ed.) Shape Forming Process D. W. Richerson
  10. 한국요업학회지 v.30 no.9 고Alumuna질 다공성 세라믹스의 내열 충격성 및 내 Slag성(기공크기에 따른) 김병훈;나용한
  11. 한국요업학회지 v.31 no.1 무가압분말충전성형법을 이용한 알루미나 세라믹스의 제조 (Ⅰ) 박정현;이상진;성재석
  12. Am. Ceram. Soc. Bull. v.70 no.1 Porous Ceramics for Gas Filtration J. F. Zicveis;P. Eggerstedt