Journal of Materials Science

, Volume 30, Issue 5, pp 1373–1378 | Cite as

Slurry processing for fabrication of SiC whisker-reinforced Si3N4 composites

  • Y. Sato
  • M. Ueki
  • K. Shintani


In order to solve the major problems of processing whisker-reinforced ceramic composites, such as agglomeration of whiskers, correlation between pH and viscosity has been carefully investigated in a mixed slurry of whiskers and matrix powder. SiC whiskers and Si3N4 powder were dispersed homogeneously by controlling pH in aqueous suspension, and the state was successfully fixed by a sudden change of pH to make the slurry more viscous. The slurry was then filtrated rapidly and dried. The strength of hot pressed composites obtained by this procedure was scarcely lowered, with increased whisker loading in the range 0–30 wt% and fracture toughness increased more than 75%.


Polymer Viscosity Fracture Toughness Agglomeration Material Processing 
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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • Y. Sato
    • 1
  • M. Ueki
    • 1
  • K. Shintani
    • 2
  1. 1.Advanced Technology Research LaboratoriesNippon Steel CorporationKawasakiJapan
  2. 2.Department of Mechanical EngineeringKanazawa Institute of TechnologyIshikawaJapan

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