Structure, energy and solute segregation behaviour of [110] symmetric tilt grain boundaries in yttria-stabilized cubic zirconia

Naoya Shibata, Fumiyasu Oba, Takahisa Yamamoto, Yuichi Ikuhara

Research output: Contribution to journalArticlepeer-review

82 Citations (Scopus)

Abstract

Yttria-stabilized cubic zirconia bicrystals with [110] symmetric tilt grain boundaries are systematically fabricated by the diffusion bonding method. It is revealed that the grain-boundary atomistic structures, excess energies and solute segregation behaviours are strongly dependent on the macroscopic geometries of the boundaries. High-resolution transmission electron microscopy combined with lattice statics calculations suggests that the grain-boundary structures are characterized by the accumulation of coordination-deficient cation sites at their cores, whose densities have a clear correlation with excess energies and amounts of solute segregation. The orientation dependence of grain-boundary properties in cubic zirconia can thus be linked and understood via local grain-boundary atomistic structures with the characteristic miscoordinated cation sites.

Original languageEnglish
Pages (from-to)2381-2415
Number of pages35
JournalPhilosophical Magazine
Volume84
Issue number23
DOIs
Publication statusPublished - 2004 Aug 11
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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