Nanoindentation of yttria-doped zirconia: Effect of crystallographic structure on deformation mechanisms
- 1 March 2009
- journal article
- Published by Springer Science and Business Media LLC in Journal of Materials Research
- Vol. 24 (3), 719-727
- https://doi.org/10.1557/jmr.2009.0091
Abstract
This article presents a nanoindentation study of polycrystalline and single crystals of yttria-doped zirconia with both tetragonal and cubic phases. Analysis of the deformation mechanisms is performed by both atomic force microscopy (AFM) and micro-Raman spectroscopy. Phase transformation from tetragonal to monoclinic phase is clearly distinguished on tetragonal crystals, whereas in cubic crystals the plastic deformation seems to be controlled by dislocation nucleation and interactions. AFM observations in tetragonal zirconia grains have shown that both grain size and autocatalytic transformation strongly influence the size of the transformed zone. Furthermore, the martensitic phase transformation seems to be also strongly dependent of the indenter shape. Experimental results suggest that a critical contact pressure is necessary to induce the phase transformation.Keywords
This publication has 25 references indexed in Scilit:
- Quantification of hydrothermal degradation in zirconia by nanoindentationActa Materialia, 2008
- Atomic force microscopy of transformation toughening in ceria-stabilized zirconiaJournal of the European Ceramic Society, 2005
- Pop-in effect as homogeneous nucleation of dislocations during nanoindentationPhysical Review B, 2003
- Surface crystalline phases and nanoindentation hardness of explanted zirconia femoral headsJournal of Materials Science: Materials in Medicine, 2003
- Fracture toughness and mechanical strength of Y-TZP/PSZ ceramicsScripta Materialia, 2001
- Transmission electron microscopy observation of deformation microstructure under spherical indentation in siliconApplied Physics Letters, 2000
- Energy Dissipation during High Temperature Displacement-Sensitive Indentation in Cubic Zirconia Single Crystalsphysica status solidi (a), 1998
- High temperature precipitation hardening in Y2O3 partially-stabilized ZrO2 (Y-PSZ) single crystals—III. Effect of solute composition and orientation on the hardeningActa Metallurgica et Materialia, 1995
- Microstructural evolution and stability of tetragonal precipitates in Y2O3 partially-stabilized ZrO2 single crystalsActa Metallurgica et Materialia, 1995
- A dislocation mechanism of crack nucleation in cubic zirconia single crystalsPhilosophical Magazine A, 1994