Enhanced Densification of Boehrmte Sol‐Gels by α‐Alumina Seeding

Masato Kumagai, Gary L. Messing

Research output: Contribution to journalArticlepeer-review

93 Scopus citations


Boehmite sol‐gels were seeded by adding <2.0 wt%α‐alumina powder to a 20% boehmite hydrosol at pH =3. The seeded gel sintered to 98% of theoretical density after 100 min at 1200°C, whereas the unseeded gel had to be sintered at 1600°C to reach 94% of theoretical density. This difference results primarily from nucleation by the α‐alumina seeds and enhanced transformation of the boehmite to α‐alumina, such that a uniform, well‐ordered, fine‐grained α‐alumina micro‐structure forms prior to densification.

Original languageEnglish (US)
Pages (from-to)c230-c231
JournalJournal of the American Ceramic Society
Issue number11
StatePublished - Nov 1984

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry


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