Dry Pressing Behavior of Nanosized $Al_2$$O_3$Powders

나노 $Al_2$$O_3$분말의 건식 가압성형 거동

  • Lee, Hae-Weon (Korea Institute of Science and Technology Ceramic Processing Research Center) ;
  • Lee, Jong-Ho (Korea Institute of Science and Technology Ceramic Processing Research Center) ;
  • Jun, Hyung-Woo (Korea Institute of Science and Technology Ceramic Processing Research Center) ;
  • Ahn, Jae-Pyoung (Korea Institute of Science and Technology Ceramic Processing Research Center) ;
  • Park, Jong-Ku (Korea Institute of Science and Technology Ceramic Processing Research Center) ;
  • Moon, Hwan (Samwha Condenser)
  • 이해원 (한국과학기술연구원 세라믹공정연구센터) ;
  • 이종호 (한국과학기술연구원 세라믹공정연구센터) ;
  • 전형우 (한국과학기술연구원 세라믹공정연구센터) ;
  • 안재평 (한국과학기술연구원 세라믹공정연구센터) ;
  • 박종구 (한국과학기술연구원 세라믹공정연구센터) ;
  • 문환 (삼화콘덴서(주))
  • Published : 2000.11.01

Abstract

표면 윤활층을 가진 나노 알루미나를 진공중에서 가압성형함으로써 결함발생없이 높은 충전압력을 가할 수 있었으며, 높은 밀도, 미세기공, 좁은 기공경 분포를 가지는 성형체를 제조할 수 있었다. 윤활제의 화학 및 기계적 특성에 의하여 변하는 모세관 현상을 조정함으로써 충전효율을 증대하고 결함발생을 억제할 수 있다. 나노분말의 소결에서도 성형 미세구조의 균일도가 치밀화 거동에 여전히 지배적인 역할을 하였다.

Keywords

References

  1. Nanomaterials: Synthesis, Properties and Applications A.D. Edelstein;R.C. Cammarata(eds.)
  2. Handbook of Nanostructured Materials and Nanotechnology H.S. Nalwa(ed.)
  3. 한국요업학회지 v.36 no.7 화학기상응축법에 의한 TiO₂ 나노분말의 합성 김신영;유지훈;이재성;김종렬;김병기
  4. Nature v.404 Sintering Dense Nanocrystalline Ceramics without Final-Stage Grain Growth I.-W. Chen;X.-H. Wang
  5. J. Am. Ceram. Soc. v.64 no.1 Agglomerate and Particle Size Effects on Sintering Yttria-Stabilized Zirconia W. H. Rhodes
  6. J. Am. Ceram. Soc. v.71 no.10 Low-Temperature Sintering of Aluminum Oxide T.-S. Yeh;M. D. Sacks
  7. Am. Ceram. Soc. Bull. v.73 no.10 Low-Temperature Sintering of α-Alumina -Seeded Boehmite Gels G. L. Messing;M. Kumagai
  8. J. Mater. Sci. v.32 Nanostructured and Near Defect-Free Ceramics by Low-Temperature Pressureless Sintering of Nanosized Y-TZP Powders P. Duran;M. Villegas;F. Capel;J. F. Fernandez;C. Moure
  9. Nanost. Mater. v.11 no.1 Effect of Compact Structures on the Phase Transition, Subsequent Densification and Microstructure Evolution During Sintering of Ultrafine Gamma Alumina Powder J.-P. Ahan;J.-K. Park;H.-W. Lee
  10. J. Am. Ceram. Soc. v.75 no.12 Fabrication of Transparent Silicon Nitride from Nanosize Particles A. Pechenik;G. Piermarini;S. C. Danforth
  11. J. Am. Ceram. Soc. v.77 no.8 Fabrication of Transparent γ-Al₂O₃ from Nanosize Particles M. R. Gallas;B. Hockey;A. Pechenik;G. Piermarini
  12. J. Am. Ceram. Soc. v.79 no.12 Transformation and Densification of Nanocrystalling θ-Alumina during Sinter Forging C. S. Nordahl;G. Messing
  13. J. Am. Ceram. Soc. v.80 no.8 Effect of Green Density on the Subsequent Densification and Grain Growth of Ultrafine SnO₂ Powder during Isochronal Sintering J.-P. Ahn;J.-K. Park;M.-Y. Huh
  14. Nanost. Mater. v.11 no.4 Transformation-Assisted Consolidation of Bulk Nanocrystalline TiO₂ S.-C. Liao;Y.-J. Chen;W. E. Mayo;B. H. Kear
  15. Nanost. Mater. v.8 no.6 Retention of Nanoscale Grain Size in Bulk Sintered Materials Via Pressure-Induced Phase Transformation S.-C. Liao;K. D. Pae;W. E. Mayo
  16. J. Am. Ceram. Soc. v.67 no.9 Influence of Aggregates on Sintering F. W. Dynys;J. W. Halloran
  17. 한국요업학회지 v.29 no.5 동적 정수압 가압성형에 의한 분말의 성형특성 김병익;최상흘
  18. Handbook of Nanostructured Materials and Nanotechnology;Synthesis and Processing v.1 Low-Temperature Compaction of Nanosize Powders E. J. Gonzalez;G. J. Piermarini;H. S. Nalwa(ed.)
  19. Particle Packing Characteristics R. M. German
  20. The Colloidal Domain(2nd Ed.) D. F. Evans;H. Wennerstrom
  21. J. Am. Ceram. Soc. v.83 no.6 Stress Development Due to Capillary Condensation in Powder Compacts: A Two-Dimensional Model Study S. Lampenscherf;W. Pompe;D. S. Wilkinson
  22. 한국요업학회지 v.32 no.4 분산계 특성이 질화규소 미분의 과립특성 및 충전거동에 미치는 영향 이해원;오성록
  23. J. Am. Ceram. Soc. v.72 no.4 Spray-Drying Ceramic Powders S. J. Lukasiewicz
  24. Am. Ceram. Soc. Bull. v.57 no.9 Character and Compaction Response of Spray-Dried Agglomerates S. J. Lukasiewicz;J. S. Reed
  25. Ceramic Trans. v.54 Effect of Suspension Property on Granule Morphology and Compaction Behavior H. W. Lee;H. Song;I. Suk;S. Oh;S. Choi
  26. Fundamentals of Ceramic Powder Processing and Synthesis T. A. Ring
  27. Nanostructured Mater. v.8 no.4 The Effect of Particle Solubility on the Strength of Nanocrystalline Agglomerates:Boehmite S. Kwon;G. L. Messing
  28. J. Sol-Gel Sci. Tech. v.9 Dry Pressing Boehmite Gels for the Fabrication of Monolithic α-Al₂O₃ S. Kwon;G. L. Messing
  29. Surfaces, Interfaces, and Colloids(2nd Ed.) D. Myers
  30. Wear v.193 Thermal Activation in Boundary Lubricated Friction P. C. Michael;E. Rabinowicz;Y. Iwasa
  31. Principles of Ceramic Processing(2nd Ed.) J. S. Reed
  32. J. Am. Ceram. Soc. v.74 no.9 The Differential Role of Forming and Sintering on Densification of Powder Compacts J. Zheng;J. S. Reed