Abstract
Structures of <111> low-angle tilt grain boundaries in yttria-stabilized cubic zirconia bicrystals were characterized by conventional transmission electron microscopy, high-resolution transmission electron microscopy and high-angle annular dark-field scanning transmission electron microscopy. It is found that the 0.4 and 4.0° tilt grain boundaries are composed of periodic arrays of edge dislocations with Burgers vectors. The experimentally estimated strain field of each dislocation in the 0.4° tilt boundary was in good agreement with the theoretically predicted strain field from the Peierls-Nabarro model. On the other hand, the estimated strain field of each dislocation in the 4.0° tilt boundary was clearly different from that in the 0.4° tilt boundary, which suggests that the strain fields of neighbouring dislocations interact when the separation distance between dislocations is shorter than a critical value.
Original language | English |
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Pages (from-to) | S117-S121 |
Journal | Journal of Electron Microscopy |
Volume | 59 |
Issue number | SUPPL. 1 |
DOIs | |
Publication status | Published - 2010 Aug |
Externally published | Yes |
Keywords
- TEM
- dislocation
- geometric phase analysis
- grain boundary
- strain field
- zirconia
ASJC Scopus subject areas
- Instrumentation