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 language | English (US) |
|---|---|
| Pages (from-to) | 2421-2424 |
| Number of pages | 4 |
| Journal | Journal of the American Ceramic Society |
| Volume | 80 |
| Issue number | 9 |
| State | Published - Sep 1997 |
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry