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

Masato Kumagai, Gary L. Messing

Research output: Contribution to journalArticlepeer-review

86 Scopus citations

Abstract

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
Volume67
Issue number11
DOIs
StatePublished - Nov 1984

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Enhanced Densification of Boehrmte Sol‐Gels by α‐Alumina Seeding'. Together they form a unique fingerprint.

Cite this