A critique of master sintering curve analysis

T. Frueh, I. O. Ozer, S. F. Poterala, H. Lee, E. R. Kupp, C. Compson, J. Atria, G. L. Messing

Research output: Contribution to journalArticle

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Abstract

In this work, we explore factors affecting the accuracy of the master sintering curve (MSC) approach for analyzing the complete sintering profile of ceramic powders. We show that the instantaneous anisotropic shrinkage must be accounted for to develop an accurate MSC. The MSC diverges at >90% density because of basic assumptions that oversimplify the analysis of the densification process. We also show that powder chemistry and forming techniques can affect the fitting parameter Q. Q should not be interpreted as the sintering activation energy, or used to interpret mechanistic differences since it is comprised of several mechanisms that influence densification throughout the sintering cycle. Despite these limitations, the MSC is a useful and practical tool for predicting thermal load (i.e. time and temperature) effects on the densification of a ceramic part fabricated from a singular powder that is fabricated by a singular forming process.

Original languageEnglish (US)
Pages (from-to)1030-1037
Number of pages8
JournalJournal of the European Ceramic Society
Volume38
Issue number4
DOIs
StatePublished - Apr 2018

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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