Bulletin of Materials Science

, Volume 28, Issue 2, pp 103–108 | Cite as

Dispersion and rheological studies of Y-PSZ tape casting slurry

  • K. G. Vasantha Kumari
  • K. Sasidharan
  • M. Sapna
  • Raghu Natarajan
Ceramics and Glasses
Received:
Revised:

Abstract

Different solvent systems in combination with three different dispersants were tried to find out the suitable solvent-dispersant combination, which give optimum dispersion of PSZ. Based on sedimentation, viscosity and rheology characteristics, zeotropic ethanol : xylene with a ratio of 50 : 50 along with 0.5 wt% phosphate ester was found to be the best solvent and dispersant combination. Optimized tape casting slurry was prepared using PEG 600 and BBP as plasticizers and PVB as the binder. Cyclohexanone was used as the homogenizer. The optimized slurry composition with 58% solid loading exhibited shear-thinning pseudoplastic rheological behaviour. Y-PSZ tapes of ∼ 50 Μm thickness free from visible defects were cast with a green tape density of 55%.

Keywords

Tape casting dispersability sedimentation rheology 
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Copyright information

© Indian Academy of Sciences 2005

Authors and Affiliations

  • K. G. Vasantha Kumari
    • 1
  • K. Sasidharan
    • 1
  • M. Sapna
    • 1
  • Raghu Natarajan
    • 1
  1. 1.Centre for Materials for Electronics Technology (C-MET)ThrissurIndia

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