Synthesis of cellular inorganic materials by foaming sol-gels

Mianxue Wu, Takamitsu Fujiu, Gary L. Messing

Research output: Contribution to journalArticlepeer-review

79 Scopus citations


A method for synthesizing low density, cellular inorganic materials from sol-gels has been developed. The method utilizes viscosity control during gelation to stabilize bubbles generated from freon droplets dispersed in the sol. Cellular silica, mullite and zirconia-toughened mullite have been fabricated with relative densities ranging from 10 to 45% and average cell sizes ranging from 30 to 1000 μm in diameter in dense matrices. This new class of low density, sol-gel-derived materials offers many opportunities in high temperature insulation, low permittivity substrates and catalyst supports, to name a few.

Original languageEnglish (US)
Pages (from-to)407-412
Number of pages6
JournalJournal of Non-Crystalline Solids
Issue number1-3
StatePublished - May 1 1990

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry


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