Accession Number:
ADA224507
Title:
Structure of Incoherent ZrO2/Al2O3 Interfaces
Descriptive Note:
Corporate Author:
CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF METALLURGY AND MATERIALS SCIENCE
Personal Author(s):
Report Date:
1986-03-01
Pagination or Media Count:
3.0
Abstract:
High-resolution electron microscopy was used to image incoherent ZrO2Al2O3 interfaces in ZrO2-toughened Al2O3 containing intragranular ZrO2. These particles are generally spherical but are sometimes faceted. High- resolution electron micrographs provide atomic-level information on the interfacial structure. For spherical particles, both ledgelike images and misfit dislocation-like images accommodated the lattice misfit, depending on the orientation of the interface, while faceted particles imply at least one low- energy ZrO2Al2O3 interface. Zirconia-toughened alumina ZTA is the most important member of the wide class of ZrO2-containing dispersion-toughened ceramics. jes
Descriptors:
Subject Categories:
- Test Facilities, Equipment and Methods