Application of Rate Controlled Sintering in the Production of ZrO2-Based Ceramic Materials

  • R. Oberacker
  • K. Dorfschmidt
  • T. Liu
  • F. Thümmler

Abstract

The principles of rate controlled sintering (RCS) were applied to compacts from a ZrO2(Y)-TZP powder. The time-temperature profiles for RCS of this material can be approximately predicted from a few dilatometer experiments carried out at constant rate of heating, if the densification- and heating rates remain within some certain limits. In this way optimum sintering cycles could be designed, leading to advantages concerning density and grain size, compared to conventional isothermal sintering. Limitations for using the full potential of RCS for the investigated practical system arise from processing defects, which cannot be healed during sintering.

Keywords

Conventional Sinter Densification Rate Densification Curve Sinter Cycle Isothermal Sinter 
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Literature

  1. [1]
    T. Liu and K. Dorfschmidt; Sinteroptimierung und -verhalten von teilstabilisiertem Zr02, Annual Meeting DKG, München 18.-20. Okt. 1988.Google Scholar
  2. [2]
    H. Palmour III, M. L. Huckabee and T. M. Hare; Microstructural Development during Optimized Rate Controlled Sintering, in Ceramic Microstructures 76, R. M. Fulrath, J. A. Pask, ed., Westview Press, Boulder CO, 1977.Google Scholar
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    A. D. Batchelor, M. J. Paisley, T. M. Hare and H. Palmour III; Precision Digital Dilatometry: A Microcomputer-Based Approach to Sintering Studies, Mat. Sci. Res., 17: 233 (1984).Google Scholar
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    H. Palmour III; Rate Controlled Sintering Technology for Powder Metals and Composites, Seminar on Advanced Sintering, P/M `88, Orlando, June 5–10, 1988.Google Scholar

Copyright information

© Springer Science+Business Media New York 1989

Authors and Affiliations

  • R. Oberacker
    • 1
  • K. Dorfschmidt
    • 1
  • T. Liu
    • 1
  • F. Thümmler
    • 1
  1. 1.Institut für Keramik im MaschinenbauUniversität KarlsruheKarlsruheDeutschland

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