Crack propagation behavior of nano-sized SiC dispersed multilayered Al2O3/3Y-TZP hybrid composites

Tomohiko Adachi, Tohru Sekino, Takafumi Kusunose, Tadachika Nakayama, Akio Hikasa, Yong Ho Choa, Koichi Niihara

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Multilayered Al2O3/3Y-TZP hybrid composites, in which multilayer and nanocomposite structure coexisted, were fabricated using nanocomposite techniques by which fine SiC particles are dispersed into both Al2O3 and/or 3Y-TZP layers. All composites were fabricated by stacking of greensheets that prepared by doctor blade method. Microstructural observation by scanning electron microscopy (SEM) confirmed that all multilayered composites were successfully fabricated without any defect and reaction phase. Residual stress measurement using X-ray diffraction (XRD) analysis revealed that residual stress could be controlled by dispersing nano-sized SiC. Upon analysis of crack propagation behavior of these composites, crack deflection was observed at layer boundaries between Al2O3 and 3Y-TZP layers; it is considered that the angles of deflection are strongly affected by the magnitude of residual stress.

Original languageEnglish
Pages (from-to)4-7
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume111
Issue number1289
DOIs
Publication statusPublished - 2003 Jan

Keywords

  • Crack propagation
  • Hybrid composite
  • Multilayer
  • Nanocomposite
  • Residual stress

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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