Dispersion and Packing of Narrow Size Distribution Ceramic Powders

  • R. L. Pober
  • E. A. Barringer
  • M. V. Parish
  • N. Levoy
  • H. K. Bowen
Part of the Materials Science Research book series (MSR, volume 17)

Abstract

A major problem in ceramics processing is that improved and reliable ceramic materials having the required properties, critical elements in the development of high technology systems, cannot be reproducibly manufactured. This lack of reproducibility in properties lies in the inability to control the development of specified microstructures, which for sintered materials depends on the characteristics of the starting powder, the green compact microstructure, and the sintering and coarsening processes.1 Although much significant work has been performed on the processes which occur during firing, many researchers now believe that the microstructures developed during sintering are essentially determined by the powder characteristics and packing.2 Recent studies have demonstrated improved stability of the microstructure against exaggerated grain growth with a monodisperse powder,3 and a significant reduction of sintering time and temperature with a submicron, narrow particle size distribution and with uniform, but not necessarily high, green density.4,5

Keywords

Carbide Sedimentation Shrinkage Fractionation Ketone 

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Copyright information

© Plenum Press, New York 1984

Authors and Affiliations

  • R. L. Pober
    • 1
  • E. A. Barringer
    • 1
  • M. V. Parish
    • 1
  • N. Levoy
    • 1
  • H. K. Bowen
    • 1
  1. 1.Materials Processing CenterMassachusetts Institute of TechnologyCambridgeUSA

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