Anisotropic grain growth in α-Fe2O3-doped alumina

J. Tartaj, G. L. Messing

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Abstract

Addition of α-Fe2O3 seed particles to alkoxide-derived boehmite sols results in the development of a highly uniform and dense microstructure at 1300°C. Higher temperature treatments promote anisotropic grain growth of lath-like α-Al2O3 grains. The fundamental explanation for this is basically attributed to the presence of Fe2+ significantly improving the mass transport. By controlling time, sintering temperature and atmosphere conditions, it is possible to obtain an appropriate microstructural development that may lead to a new class of tough ceramic materials.

Original languageEnglish (US)
Pages (from-to)719-725
Number of pages7
JournalJournal of the European Ceramic Society
Volume17
Issue number5
Publication statusPublished - Dec 1 1997

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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