Effect of dispersant on the flow energy of ceramic injection molding mixtures

Dean-Mo LIu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The activation energy (E) of flow for zirconia-wax suspensions was characterized by using three different types of dispersing agents having different melting points. Experimental results suggest that the energy E shows a dispersant-dependent character over the temperature range of study. Above the melting point (Tm) of the dispersant, the suspensions exhibit a rheological behavior depending strongly upon the property of dispersant employed; however, below the Tm, suspension viscosity demonstrated a temperature dependence similar to that of the melt wax. A change in rheological mechanism due to the change in temperature appears evident, indicating a possible alternative to tailor the rheological property by interfacial adsorption of proprietary dispersant in highly-concentrated suspensions for particularly powder injection molding applications.

Original languageEnglish
Pages (from-to)141-144
Number of pages4
JournalMaterials Science and Engineering A
Volume259
Issue number1
StatePublished - 15 Jan 1999

Keywords

  • Dispersant
  • Melting point
  • Powder injection molding
  • Viscosity
  • Wax
  • Zirconia

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