Shrinkage-free, alumina-glass dental composites via aluminum oxidation

Sang Jin Lee, Waltraud M. Kriven, Hyun Min Kim

Research output: Contribution to journalArticle

Abstract

Alumina-glass composites that contain oxidized aluminum were investigated to make shrinkage-free, all-ceramic dental porcelain. This was achieved by control of the volume expansion and shrinkage that occur during the aluminum oxidation and densification processes. The dimensional change and strength of the alumina-glass composites were dependent on the aluminum content and particle size. A shrinkage-free sample with a strength of 330 MPa and transmittance of 1.21 was fabricated by using 4-5 vol% of aluminum powder with an average particle size of 6 μm in the alumina-glass composite made by the In-Ceram method.

Original languageEnglish (US)
Pages (from-to)2141-2147
Number of pages7
JournalJournal of the American Ceramic Society
Volume80
Issue number8
StatePublished - Aug 1 1997

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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