Direct evidence of dopant-enhanced grain-boundary sliding in yttria-stabilized zirconia bicrystals

Atsutomo Nakamura, Naoya Shibata, Nobusato Morishige, Katsuyuki Matsunaga, Yuichi Ikuhara, Takahisa Yamamoto

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Compression tests were conducted at 1400°C in air for undoped and Si-doped yttria-stabilized zirconia (YSZ) bicrystals with the same orientation relationship (∑ = 5, [001]/{210} grain boundary). It was found that the macroscopic grain-boundary slidings are observed during the deformation in both undoped and doped bicrystals, and the sliding displacements increase almost linearly with increasing total displacements. It is distinctly demonstrated that the Si-doped bicrystal exhibits a sliding displacement that is a few times larger than the undoped bicrystal. In addition, the total strain of the Si-doped bicrystal at a failure is much larger than that of the undoped bicrystal. It can be stated that Si doping in YSZ not only enhances the grain-boundary sliding but also suppresses its failure.

本文言語English
ページ(範囲)938-942
ページ数5
ジャーナルJournal of the American Ceramic Society
88
4
DOI
出版ステータスPublished - 2005 4月
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 材料化学

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