Theoretical analysis of Lu grain boundary segregation at the sigma-13 grain boundary in Al2O3.

Kaoru Nakamura; Naoya Shibata; Katsuyuki Matsunaga; Takahisa Yamamoto; Yuichi Ikuhara

doi:10.14853/pcersj.2006S.0.51.0

Annual Meeting of The Ceramic Society of Japan, 2006

Session ID : 1C34

DOI https://doi.org/10.14853/pcersj.2006S.0.51.0

Conference information

Host: The Ceramic Society of Japan

Theoretical analysis of Lu grain boundary segregation at the sigma-13 grain boundary in Al2O3.

*Kaoru Nakamura, Naoya Shibata, Katsuyuki Matsunaga, Takahisa Yamamoto, Yuichi Ikuhara

Author information

Keywords: Alumina, Transmission Electron Microscope, Bicrystal, Grain boundary segregation, Static lattice calculation

CONFERENCE PROCEEDINGS FREE ACCESS

Details

Abstract

Alumina bicrystals were fabricated by a diffusion bonding technique in air to obtain the pyramidal sigma-13 twin grain boundaries. We observed the grain boundary structures by high-resolution transmission electron microscopy(HREM). And also we performed first principle calculation for the atomic structures and static lattice calculation for segregation behavior of Lu. As a result, it was supposed that Lu segregate specific site at grain boundary core region.

Corresponding author

Register with J-STAGE for free!