Germanium‐Modified Cordierite Ceramics with Low Thermal Expansion

Dinesh Kumar Agrawal, V. S. STUBICAN, Y. MEHROTRA

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Magnesium cordierite ceramics modified by ionic substitution of Ge for Si were synthesized, fabricated, and characterized. The effect of the amount of ionic substitution on thermal expansion was investigated. Ionic substitution of ∼20% germanium for silicon reduces thermal expansion to zero at room temperature. A processing schedule to achieve nearly theoretical densities in germanium cordierite specimens was developed, and the microstructures of sintered samples were examined by scanning electron microscopy. Other thermal properties such as specific heat and thermal conductivity were also measured for the germanium‐modified cordierites.

Original languageEnglish (US)
Pages (from-to)847-851
Number of pages5
JournalJournal of the American Ceramic Society
Volume69
Issue number12
DOIs
StatePublished - Jan 1 1986

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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