Low-temperature sintering of α-alumina-seeded boehmite gels

Gary L. Messing, Masato Kumagai

Research output: Contribution to specialist publicationArticle

95 Scopus citations


α-Al2O3 can be sintered at lower temperatures when derived from a seeded boehmite gel. The extended vermicular microstructure, which is characteristic of α-Al2O3 derived from Al2O3 precursors, is avoided by using a large number of seed particles. The scale and uniformity of the microstructure formed by the in situ growth of α-Al2O3 are the key factors that allow for low-temperature sintering. Herring's scaling law can be used to predict the approximate sintering temperature and demonstrates that, if scale of microstructure can be reduced to <20 nm, sintering below 1000 °C may be possible.

Original languageEnglish (US)
Number of pages4
Specialist publicationAmerican Ceramic Society Bulletin
StatePublished - Oct 1 1994

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites


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