Journal of Materials Science

, Volume 25, Issue 1, pp 15–21 | Cite as

Influence of pH on rheological properties of Al2O3 slips

  • A. K. Nikumbh
  • H. Schmidt
  • K. Martin
  • F. Porz
  • F. Thümmler


The slip-casting technique is commonly used for the production of complex-shaped ceramic components. Various commercial powders have been used, which were characterized with respect to morphology, particle-size distribution and specific surface area. Alumina slips with 80% solid content were prepared with distilled water and ethanol as dispersing agent, with and without deflocculant. HCl and C4H13NO (tetramethylammonium hydroxide) were used for controlling the pH. Investigations into rheology, i.e. the dependence of viscosity and shear stress on shear rate, were performed. The slip, green and sedimentation bulk density were measured.


Polymer Viscosity Shear Stress Hydroxide Al2O3 
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Copyright information

© Chapman and Hall Ltd 1990

Authors and Affiliations

  • A. K. Nikumbh
    • 1
  • H. Schmidt
    • 2
  • K. Martin
    • 2
  • F. Porz
    • 2
  • F. Thümmler
    • 2
  1. 1.Department of ChemistryUniversity of PoonaPuneIndia
  2. 2.Institut für Keramik im Maschinenbau und Institut für Werkstoffkunde II der Universitat KarlsruheWest Germany

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