Assessment of residual strain in zirconia-toughened alumina using neutron diffraction
Creators
- 1. Curtin Univ. of Technology, Perth (Australia). Dept. of Applied Physics
Description
Substantial strains may be generated in α-alumina (Al2O3) matrix ceramics by including zirconia (ZrO2) second-phase particles, the material being known as zirconia-toughened alumina (ZTA). These strains arise from the expansion in unit cell volume resulting from tetragonal-to-monoclinic transformation in the ZrO2 particles and from thermal contraction mismatch (TCM) caused by differences between the expansion coefficients of the Al2O3 and ZrO2 phases. Neutron powder diffractometry has been used to examine bulk, volume-averaged, microstrain character for each of the crystalline phases in a suite of zirconia-toughened alumina ceramics. Line-broadening estimates and cell parameter shifts, determined by the Rietveld method, have provided microstrain assessments of the nonuniform and uniform types, respectively
Additional details
Publishing Information
- Journal Title
- Journal of the American Ceramic Society
- Journal Volume
- 76
- Journal Issue
- 8
- Journal Page Range
- p. 2133-2135.
- ISSN
- 0002-7820
- CODEN
- JACTAW
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25008753
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ALUMINIUM OXIDES; CRYSTALLOGRAPHY; EXPERIMENTAL DATA; GRAIN ORIENTATION; MATRIX MATERIALS; MICROSTRUCTURE; MONOCLINIC LATTICES; NEUTRON DIFFRACTION; RESIDUAL STRESSES; STRAINS; TETRAGONAL LATTICES; ZIRCONIUM OXIDES
- Descriptors DEC
- ALUMINIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DATA; DIFFRACTION; INFORMATION; MATERIALS; NUMERICAL DATA; ORIENTATION; OXIDES; OXYGEN COMPOUNDS; SCATTERING; STRESSES; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS