The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Preparation and Toughening of Hot-Pressed SiC-AIN Solid Solutions

  • Published : 1999.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

The preparation and toughening of SiC-AIN solid solution from powder mixtures of $\beta$-SiC, AIN and $\alpha$-SiC by hot-pressing were studied in the 1870 to $2030^{\circ}C$ temperature range. The reaction of AIN and $\beta$-SiC(3C) powders causing transformation to the 2H(wurtzite) structure appeared to depend on hot-pressing temperatures and an additive of $\alpha$-SiC. For the composition of 49wt% SiC with 2 wt% $\alpha$-SiC and 47.5 wt% AIN47.5wt% SiC with 5 wt % $\alpha$-SiC at 203$0^{\circ}C$ for 1 h, th complete solid solutions with a single phase of 2H could be obtained. The appreciable amount of $\alpha$-SiC could develop the columnar inter-grains of 4H phase and the stable 2H phase with the relatively uniform composition and grain size distributions. The effect of $\alpha$-SiC on the phases present and compositional microstructures with columnar inter-grains was invetigated using X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The fracture toughness and Vickers hardness of the hot-pressed solid solutions wre examined by the indentation-fracture-test method.

Keywords

References

  1. The Encyclopedia of Advanced Materials v.4 D. Bloor;R. J. Brook;M. C. Flemings;S. Mahajan;R. W. Cahn
  2. Nature v.275 New Materials in the Si-C-Al-O-N and Related System I. B. Cutler;P. D. Miller;W. Rafaniello;H. K. Park;D. P. Thomson;K. H. Jack
  3. J. Mat. Sci. v.16 Fabrication and Characterization of SiC-AlN Alloys W. Rafaniello;K. Cho;A. V. Virkar
  4. J. Mat. Sci. Lett. v.7 The Formation of Sic-AIN Solid Solution by the Carbothermal Reduction Process of Montmorillonite Y. Sugahara;K. I. Sugimoto;H. Takagi;K. Kuroda;C. Kato
  5. J. Mat. Sci. Lett. v.1 A New Compound Si₃Al₄N₄C₃ with the Wurzite Structure in the System Si₃N₄-Al₄C₃ K. Tsukuma;M. Shimade;M. Koizumi
  6. J. Am. Ceram. Soc. v.69 Synthesis of β-Sialon from a Montmorillonite-Polyacrylonitrile Intercalation Compound by Carbothermal Reduction Y. Sugahara;K. Kuroda;C. Kato
  7. J. Am. Ceram. Soc. v.65 Composition and Properties of Hot-Pressed SiC-AlN Solid Solutions R. Ruh;A. Zangvil
  8. J. Am. Ceram. Soc. v.66 Effect of Hot-Pressing Temperatures on the Thermal Diffusivity/Conductivity of SiC/AlN Composites L. D. Bentsen;D. P. H. Hasselman;R. Ruh
  9. J. Am. Ceram. Soc. v.66 Investigation of Phase Stability in the System SiC-AlN W. Rafaniello;M. R. Plichta;A. V. Virkar
  10. Mat. Sci. Eng. v.71 Solid Solutions and Composites in the SiC-AlN and SiC-BN Systems A. Zangvil;R. Ruh
  11. J. Am. Ceram. Soc. Bull. v.64 Elastic properties of SiC, AlN, and Their Solid Solutions and Particulate composites R. Ruh;A. Zangvil;J. Barlowe
  12. J. Am. Ceram. Soc. v.69 Elevated Temperature Creep of Silicon Carbide-Aluminum Nitride Ceramics: Role of grain Size Z. C. Jou;S. Y. Kuo;A. V. Virkar
  13. J. Am. Ceram. Soc. v.70 Modulated Structures in SiC-AlN Ceramics S. Y. Kuo;A. V. Virkar;W. Rafaniello
  14. J. Am. Ceram. Soc. v.71 Phase Relationships in the Silicon Carbide-Aluminum Nitride System A. Zangvil;R. Ruh
  15. J. Am. Ceram. Soc. v.73 Morphology of Phase Separation in AlN-Al₂OC and SiC-AlN Ceramics S. Y. Kuo;A. V. Virkar
  16. J. Mat. Sci. v.25 Aluminium Nitride Coatings on Silicon Carbide Fibres, Prepared by Pyrolysis of a Polymeric Precursor I. Teusel;C. Russel
  17. J. Mat. Sci. v.26 Preparation and Mechanical Properties of SiC-AlN Ceramic Alloy J. F. Li;R. Watanabe
  18. J. Am. Ceram. Soc. v.75 Microstructure and Mechanical Properties of Host-Pressed Silicon Carbide-Aluminum Nitride Compositions Y. Xu;A. Zangvil;M. Landon;F. Thevenot
  19. J. Am. Ceram. Soc. v.75 Damage-Resistant SiC-AlN Layered Composites with Surface Compressive Stresses R. Sathyamoorthy;A. V. Virkar;R. A. Cutler
  20. J. Am. Ceram. Soc. v.75 Phase Separation in the SiC-AlN Pseudobinary System: The Role of Coherency Strain Energy J. Chen;Q. Tian;A. V. Virkar
  21. Ceram. Eng. Sci. Proc. v.11 Fabrication, Microstructure, and Properties of SiC-AlN ceramic Alloys R. R. Lee;W. C. Wei
  22. J. Mat. Sci. Lett. v.11 Presureless Sintering of Aluminium Nitride/Silicon Carbide Ceramics I. Teusel;C. Russel
  23. J. Mat. Sci. v.28 Phase Separation and Toughening of SiC-AlN Solid-Solution Ceramics M. Miura;T. Yogo;S. I. Hirano