Aqueous tape casting of low-k cordierite substrate: The influence of glass content

Sen Mei, Juan Yang, José M. F. Ferreira, Rodrigo Martins

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1 Citation (Scopus)


Thick films of cordierite-based glass ceramics were prepared by aqueous tape casting from suspensions containing 80-wt% solids. The weight proportions of cordierite/glass ranged from 70/30 to 30/70 in order to investigate the effect of glass content on the rheological behaviour and on the microstructures and properties of the green tapes. Suspensions with 50 to 60-wt% glass content exhibited the lowest viscosity values among all the slurries investigated, while the green tape containing 30-wt% glass presented homogenous microstructures at both top and bottom surfaces, contrarily to the observations for the other compositions. The green densities increased with glass content. The sintered tapes (1150°C, 2h) containing 50 to 60-wt% glass exhibited the lowest values for the dielectric constant (∼5.2) and dielectric loss (∼0.002) at 1MHz.

Original languageEnglish
Pages (from-to)168-171
Number of pages4
JournalMaterials Science Forum
Publication statusPublished - 2004
EventII International Materials Symposium: Materials 2003 and XI Encontro da Sociedade Portuguesa de Materiais, 2003 MATERIAIS - Caparica, Portugal
Duration: 14 Apr 200316 Apr 2003


  • Cordierite
  • Glass-ceramics
  • Rheological behaviour
  • Tape casting


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