Oxygen diffusion along symmetric [0001] tilt grain boundaries in α-alumina

Tsubasa Nakagawa, Isao Sakaguchi, Katsuyuki Matsunaga, Takahisa Yamamoto, Hajime Haneda, Yuichi Ikuhara

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Grain boundary diffusion coefficients of oxygen (δDgb) at 1793K in high purity α-alumina bicrystals with Σ7{2 3̄ 10}/[0001] and Σ31{7 11̄ 40}/[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 7.1×10-24 [m3/sec] for Σ7 grain boundary and 5.3×10-24 [m3/sec] for Σ31 grain boundary, respectively. These results indicate that Σ values do not directly relate to grain boundary diffusion properties.

Original languageEnglish
Pages (from-to)415-418
Number of pages4
JournalKey Engineering Materials
Publication statusPublished - 2006
Externally publishedYes


  • Alumina bicrystal
  • Grain boundary diffusion
  • Isotopic exchange / diffusion profiling
  • SIMS

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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