Fracture toughness of Al{sub 2}O{sub 3}-particle-dispersed Y{sub 2}O{sub 3}-partially stabilized zirconia

Journal Article · Fri Mar 31 23:00:00 EST 1995 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1995.tb08441.x· OSTI ID:82604

Li, J F; Watanabe, Ryuzo ^[1]

---

1. Tohoku Univ., Sendai (Japan)

The fracture toughness of 3 mol% Y{sub 2}O{sub 3}-ZrO{sub 2} (3Y-PSZ) composites containing 10--30 vol% Al{sub 2}O{sub 3} with different particle sizes was investigated. It was round that Al{sub 2}O{sub 3} dispersion of up to 30 vol% increased the fracture toughness by 17% to 30%, and the toughness increase was more remarkable in the composite dispersed with Al{sub 2}O{sub 3} particles of larger sizes. By combining the effects of the dispersion toughening and phase transformation toughening, the toughness change in the present materials was theoretically predicted, which was in good agreement with the experimental data.

• Sponsoring Organization: USDOE
• OSTI ID: 82604
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 4 Vol. 78; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
DEFECTS
FRACTURE PROPERTIES
OPTICAL MICROSCOPY
PARTICLE SIZE
POWDERS
SAMPLE PREPARATION
SINTERING
SOLID SOLUTIONS
YTTRIUM OXIDES
ZIRCONIUM OXIDES