A strong and damage-tolerant oxide laminate

Dong Hau Kuo, Waltraud M. Kriven

Research output: Contribution to journalArticle

Abstract

A novel laminar oxide composite was developed. This oxide laminate, which was fabricated by hot pressing, consisted of three types of layers, which were stacked in a repeating sequence of YPO 4, yttria-stabilized ZrO 2, 30 vol% yttria-stabilized ZrO 2-70 vol% Al 2O 3, and yttria-stabilized ZrO 2. The behavior of the oxide laminate was evaluated by four-point flexural testing and the indentation technique. The flexural strength from one test was 358 MPa, and the load-displacement curve of this test displayed a graceful failure. Pronounced interfacial delamination contributed to a high work of fracture and damage tolerance. These properties have rarely been observed in oxide composites and are comparable to those of non-oxide composites, such as SiC/graphite, SiC/BN, and Si 3N 4/BN laminates.

Original languageEnglish (US)
Pages (from-to)2421-2424
Number of pages4
JournalJournal of the American Ceramic Society
Volume80
Issue number9
StatePublished - Sep 1 1997

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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