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Resistance to Fracture of a Partially Stabilized Zirconia/β‐Alumina Composite
Author(s) -
Troczynski Thomas B.,
Nicholson Patrick S.
Publication year - 1985
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.1151-2916.1985.tb11531.x
Subject(s) - materials science , cubic zirconia , composite material , composite number , weibull modulus , fracture (geology) , weibull distribution , chevron (anatomy) , fracture toughness , fracture mechanics , deformation (meteorology) , elastic modulus , modulus , flexural strength , ceramic , paleontology , statistics , mathematics , biology
Partially stabilized zirconia (PSZ) /β‐alumina composites exhibit extensive non‐elastic deformation during fracture. Repeated loading/stable fracture/unloading experiments were performed on chevron‐notched four‐point‐bend specimens of the composite and pure PSZ. The energy consumption during the propagation of long cracks in the composite (∼500 J/m 2 ) is 1 order of magnitude larger than for PSZ (∼50 J/m 2 ). Breaking strengths of 127 MPa were obtained with a Weibull modulus of 43.