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Processing Routes and Microstructure of Ceramic-Matrix/Platelet Composites

  • Thomas Claassen
  • Nils Claussen
Chapter

Abstract

Platelet reinforcement of ceramics represents a viable alternative to whisker reinforcement. It is evident that the effectivity of platelets as reinforcing elements significantly depends on the composite microstructure. Homogenous platelet dispersion in a matrix sintered to high density is required. Samples made by different processing routes (attrition milling, drying, CIP; ultrasonic dispersion, drying, CIP) have been characterized. Ultrasonic dispersion promotes homogeneous platelet distribution and enhanced densification behaviour but complete densification of a composite with randomly distributed platelets is limited to a platelet content of about 15 vol.%. A method for the preparation of composites with oriented platelets by tape casting and lamination technique is described. Improved densification is achieved with oriented platelets.

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References

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Copyright information

© Elsevier Science Publishers Ltd and MPA Stuttgart 1992

Authors and Affiliations

  • Thomas Claassen
    • 1
  • Nils Claussen
    • 1
  1. 1.Technische Universität Hamburg-HarburgHamburg 90Germany

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