Articles
  • Estimation of the volume fraction gelation threshold for the temperature induced forming (TIF) alumina aqueous suspensions using rheological measurement
  • Yunpeng Yang and Wolfgang M. Sigmund*
  • Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611-6400, USA
Abstract
An approach using a viscoelastic property measurement to estimate the volume fraction gelation threshold of the temperature induced forming (TIF) alumina suspensions is described. The results show that the volume fraction gelation threshold is about 0.15 for 0.04 wt% polyacrylic acid (PAA) addition suspensions. The amount of PAA added (up to 1.0 wt%) does not have significant influence on this volume fraction threshold.

Keywords: Gelation threshold, Ceramic forming, Colloidal processing, Viscoelastic property, Alumina, Shear modulus, Percolation

This Article

  • 2001; 2(3): 120-124

    Published on Sep 30, 2001