Paper Title:
Oxygen Diffusion along Symmetric [0001] Tilt Grain Boundaries in α-Alumina
  Abstract

Grain boundary diffusion coefficients of oxygen (δDgb) at 1793K in high purity α-alumina bicrystals with Σ7{2 _ ,310}/[0001] and Σ31{7 _ ,1140}/[0001] symmetric tilt grain boundaries were measured by means of the isotopic exchange and diffusion depth profiling using SIMS. δDgb of both grain boundaries were determined to be 7.1x10-24 [m3/sec] for Σ7 grain boundary and 5.3 x10-24 [m3/sec] for Σ31 grain boundary, respectively. These results indicate that Σ values do not directly relate to grain boundary diffusion properties.

  Info
Periodical
Key Engineering Materials (Volumes 317-318)
Edited by
T. Ohji, T. Sekino and K. Niihara
Pages
415-418
DOI
10.4028/www.scientific.net/KEM.317-318.415
Citation
T. Nakagawa, I. Sakaguchi, K. Matsunaga, T. Yamamoto, H. Haneda, Y. Ikuhara, "Oxygen Diffusion along Symmetric [0001] Tilt Grain Boundaries in α-Alumina", Key Engineering Materials, Vols. 317-318, pp. 415-418, 2006
Online since
August 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Naoki Takata, Kenichi Ikeda, Fusahito Yoshida, H. Nakashima, Hiroshi Abe
Abstract:In the present study, grain boundary energy and atomic structure of <110> symmetric tilt boundaries in copper were evaluated by molecular...
807
Authors: Isamu Kuchiwaki, Takahiro Hirabayashi, Hiroshi Fukushima
Abstract:Cast polycrystalline silicon for solar cell contains mostly straight twin boundaries which are thought to have little effect on the...
1673
Authors: Václav Paidar, Pavel Lejček
Abstract:Grain boundaries are decisive for many properties of materials. Due to short-range stress field their influence is primarily based on their...
63
Authors: Kenichi Ikeda, Naoki Takata, Kousuke Yamada, Fuyuki Yoshida, Hideharu Nakashima, Nobuhiro Tsuji
Abstract:Grain boundary structures in the Accumulative roll-bonding (ARB) processed copper (ARB-Cu) have been studied. The grain boundary structures...
925
Authors: Myrjam Winning
Abstract:It is shown that an externally applied mechanical stress field can change the kinetics of individual grain boundaries. Moreover, such...
987