Solid-solution effects of a small amount of nickel oxide addition on phase stability and mechanical properties of Yttria-stabilized tetragonal zirconia polycrystals

Hiroki Kondo, Tohru Sekino, Takafumi Kusunose, Tadachika Nakayama, Yo Yamamoto, Masashi Wada, Tomohiko Adachi, Koichi Niihara

研究成果: Article査読

21 被引用数 (Scopus)

抄録

Stability and mechanical properties of the tetragonal phase were investigated for NiO-doped yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) systems. Only 0.3 mol% of NiO in solid solution could be added to the Y-TZP while maintaining the tetragonal phase. Fracture toughness improved remarkably on addition of a small amount of NiO. Raman spectroscopy analysis around cracks introduced by Vickers indentation revealed that the amount of monoclinic phase transformed from tetragonal phase was increased. It was confirmed that fracture toughness improvement was due not only to increased grain size, but also to Y-TZP destabilization by solid solution of NiO.

本文言語English
ページ(範囲)523-525
ページ数3
ジャーナルJournal of the American Ceramic Society
86
3
DOI
出版ステータスPublished - 2003 3

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 材料化学

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