Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Effect of Increased Oxygen Content due to Intensive Milling on Phase and Microstructural Development of Silicon Nitride

  • Kim, Hai-Doo (Ceramic Materials Group, Korea Institute of Machinery and Materials) ;
  • Ellen Y. Sun (United Technology Research Center) ;
  • Paul F. Becher (Metals and Ceramics Division, Oak Ridge National Laboratory) ;
  • Kim, Hyo-Jong (Smart Ceramic Company) ;
  • Han, Byung-Dong (Ceramic Materials Group, Korea Institute of Machinery and Materials) ;
  • Park, Dong-Soo (Ceramic Materials Group, Korea Institute of Machinery and Materials)
  • Published : 2001.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

Compacts of a mixture of fine $\alpha$-Si$_3$N$_4$powders, 6% $Y_2$O$_3$and 1% $Al_2$O$_3$were attrition milled time on phase and microstructural development in silicon nitride ceramics. The sintered surface and the interior showed different behaviors in phase and microstructral developments. Increased oxygen content with increased milling time of powder mixture leads to the formation of Si$_2$$N_2$O phase at temperatures as low as 155$0^{\circ}C$. Si$_2$$N_2$O is stable in the interior of the samples but unstable in the surface region of the specimen sintered at higher temperature. This results in a duplex structure where the interior consists of Si$_2$$N_2$O grains dispersed in $\beta$-Si$_3$N$_4$matrix and a surface which contains only $\beta$-Si$_3$N$_4$. The alpha to beta phase transformation and the microstructural development are shown to be influenced by the formation and decomposition of the Si$_2$$N_2$O.

Keywords

References

  1. J. Mater. Sci. v.22 Review: Relationship between Processing, Microstructure and Properties of Dense and Reaction-bonded Silicon Nitride G. Ziegler;J. Heinrich;G. Woetting
  2. Ceram. Eng. Sci. Proc. v.18 no.4 Effect of Powder Characteristics on the α-to β-Silicon Nitride Transformation Kinetics T. N. Tiegs;F. C. Montgomery;J. L. Schroeder;D. L. Barker;P. A. Menchhofer
  3. MRS Symp. Proc. Vol.287, Nov.30-Dec.3, 1992 The Influence of Powders and Processing Methods on Microstructure and Properties of Dense Silicon Nitride;Silicon Nitride Ceramics: Scientific and Technological Advances G. Woetting;H. Feuer;E. Gugel;I-W. Chen(ed.);P.F. Becher(ed.);M. Mitomo(ed.);G. Petzow(ed.);T. S. Yen(ed.)
  4. J. Kor. Ceram. Soc. v.31 no.7 Effect of Sintering Additives on the Oxidation Behaviour of Hot Pressed Silicon Nitride H.J. Choi;Y.W. Kim;J.G. Lee
  5. J. Kor. Ceram. Soc. v.32 no.6 Directional Effect of Applied Pressure during the Sintering on the Microstructures and Fracture Toughness of Heat-treated Silicon Nitride Ceramics S-H. Lee;H.D. Park;J.D. Lee
  6. J. Kor. Ceram. Soc. v.32 no.11 Effect of the Heating Rate on the Microstructure and Fracture Toughnesss of Silicon Nitride Ceramics S-H. Lee;J. D. Lee;D-Y. Kim
  7. J. Kor. Ceram. Soc. v.36 no.1 Effect ot ehr Whisker Amount and Orientation on Mechanical properties of the Si₃N₄based Composites C-W. Kim;D-S. Park;C. Park
  8. J. Kor. Ceram. Soc. v.37 no.1 Effect of Sintering Additives and Sintering Temperature on Mechanical Properties of the Si₃N₄Composites Containing Aligned β-Si₃N₄Whisker C-W. Kim;M-J. Choi;C. Park;D-S. Park
  9. J. Ceram. Soc. Jpn. v.104 Increase of Oxygen Content on Si₃N₄Powder during Ball Milling Using Alcohol as Solvent S. Wada
  10. Ph.D thesis, KAIST Abnormal Growth of Faceted Grains in Liquid Matrix Y. J. Park
  11. Metall. Mater. Trans. v.27A Abnormal Growth of Faceted (WC) Grains in a (Co) Liquid Matrix Y. J. Park;N. M. Hwang;D.Y. Yoon
  12. J. Am. Ceram. Soc. v.82 no.3 Effect of α-Si₃N₄Particle Size on the Microstructural Evolution of Si₃N₄Ceramics C.J. Lee;D.J. Kim;E.S. Kang
  13. MRS Bulletin Using Microstructure to Attack the Brittle Nature of Silicon Nitride Ceramics P.F. Becher;S.L. Hwang;C.H. Hsueh
  14. J. Am. Ceram. Soc. v.74 no.2 Microstructural Design of Toughened Ceramics P.F. Becher
  15. J. Am. Ceram. Soc. v.63 no.1-2 The System Si₃N₄-SiO₂-Y₂O₃ L. J. Gauckler;H. Hohnke;T.Y. Tien
  16. J. Am. Ceram. Soc. v.74 no.4 Effect of Phase Composition on the Mechanical Properties of Hot Pressed SiAlON Ceramics K. Yabuta;H. Nishio;K. Uematsu
  17. J. Ceram. Soc. Jpn. v.103 Effect of Heating Rate on Transition Liquid Phase Sintering of beat-O' Sialon Ceramics K. Yabuta;H. Nishio
  18. J. Am. Ceram. Soc. v.81 no.5 Nucleation and Growth of Silicon Oxynitride Grains in a Fine-grained Silicon Nitride Matrix C. Wang;H. Emoto;M. Mitomo
  19. J. Euro. Ceram. Soc. v.18 Fabrication of Silicon Nitride-silicon Oxynitride insitu Composites H. Emoto;M. Mitomo;C-M. Wang;H. Hirosturu;T. Inaba
  20. Am. Ceram. Soc. Bull. v.56 no.9 Determination of Phase Content of Si₃N₄by X-ray Diffraction Analysis C.P. Gazzara;D.P. Messier
  21. Handbook of Glass Properties N. P. Bansal;R.H. Doremus
  22. Materials Science and Technology v.11 Structure and Properties of Ceramics M. Swain;R. W. Cahn(ed.);P. Haasen(ed.);E.J. Kramer(ed.)
  23. J. Am. Ceram. Soc. v.80 no.2 Desintering Process in the Gas-pressure Sintering of Silicon Nitride S-L. Hwang;P.F. Becher;H-H. Lin
  24. J. Am. Ceram. Soc. v.80 no.10 Microstructural Evolution of Gas-pressure-sintered Si₃N₄with Yb₂O₃as a Sintering Aid W-H. Lee;H-E. Kim;S-J. Cho
  25. Key Engineering Materials v.132-136 Origins and Avoidance of Colour Inhomogeneities in Silicon Nitride Ceramics O. Goeb;M. Hermann;S. Siegel;P. Obenaus
  26. J. Mater. Res. v.14 no.5 Microstructural Evolution and Mechanical Properties of Gas-pressure-sintered Si₃N₄with Yb₂O₃as a Sintering Aid K-M. Lee;W-H. Lee;Y-H. Koh;J-J. Choi;H-E. Kim;S-S. Baek
  27. J. Ceram. Soc. Jpn. v.106 no.9 Delay of α to β Transformation of Si₃N₄Contacting with Carbon during Hot-pressing and PECS S. Wada;M. Suganuma;Y. Kitagawa;N. Murayama
  28. Key Engineering Materials v.89-91 Nucleation and Growth of Si₂N₂O in Si₃N₄materials Employing Different Sintering Additives W. Braue;R. Pleger;W. Luxem
  29. Key Engineering Materials v.89-91 Gas Pressure Sintering of Si₃N₄in N₂/CO/(CO₂) Atmosphere U. Neidhardt;H. Schubert;E. Bischoff;G. Petzow
  30. Introduction to Metallurgical Thermodynamics D.R. Gaskell