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Fracture Toughness of Al 2 O 3 ‐Particle‐Dispersed Y 2 O 3 ‐Partially Stabilized Zirconia
Author(s) -
Li JingFeng,
Watanabe Ryuzo
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08441.x
Subject(s) - materials science , fracture toughness , composite material , toughening , toughness , dispersion (optics) , cubic zirconia , composite number , particle (ecology) , particle size , ceramic , chemical engineering , oceanography , physics , engineering , optics , geology
The fracture toughness of 3 mol% Y 2 O 3 ‐ZrO 2 (3Y‐PSZ) composites containing 10–30 vol% Al 2 O 3 with different particle sizes was investigated. It was found that Al 2 O 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 2 O 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.