| Titre : | Structures of dissociated 〈1 View the MathML source 0 0〉 dislocations and {1 View the MathML source 0 0} stacking faults of alumina (α-Al2O3) (2010) |
| Auteurs : | E. Tochigi, Auteur ; N. Shibata, Auteur ; A. Nakamura, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Acta materialia (Vol. 58 N° 1, Janvier 2010) |
| Article en page(s) : | pp. 208–215 |
| Note générale : | Métallurgie |
| Langues : | Anglais |
| Tags : | Alumina (α ; -Al2O3) Grain boundary Dislocation Stacking fault Transmission electron microscopy (TEM) |
| Résumé : | An alumina (α-Al2O3) bicrystal with a {1 View the MathML source 0 0}/〈1 1 View the MathML source 0〉 2° low-angle grain boundary was fabricated by diffusion bonding, and the grain boundary was observed by high-resolution transmission electron microscopy (HRTEM). It was found that 1/3〈1 View the MathML source 0 0〉 partial-dislocation triplets were periodically arrayed along the boundary. The atomic structure within the {1 View the MathML source 0 0} stacking faults in between the partial-dislocation triplets was determined by HRTEM combined with first-principles calculations. We discuss the stacking fault structures and their excess energies in detail. |
| DEWEY : | 669 |
| ISSN : | 1359-6454 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S1359645409005941 |
