Fracture Toughness of a Partially Stabilized ZrO₂ in the System CaO‐ZrO₂ Journal Articles

abstract

• The room‐temperature fracture behavior of partially stabilized ZrO3 (PSZ) in the system CaO‐ZrO2 was investigated. Fracture energy was measured using standard single‐edge‐crack and work‐of‐fracture techniques. Attempts were made to relate the fracture toughness parameters to the microstructure of the material. Stable crack propagation was always observed; a model is proposed to explain these observations on the basis of the formation of a microcrack zone at the tip of a propagating crack. The occurrence of initial stable crack propagation is explained in terms of an increase in microcrack zone size. The possibility that crack stability results from testing geometry superimposed on the microcracking stability is also discussed.

authors

• GREEN, DAVID J
• NICHOLSON, PATRICK S
• Embury, Johndavid

status

• published 

publication date

• December 1973

has subject area

• 0912 Materials Engineering (FoR)
• 0913 Mechanical Engineering (FoR)
• Materials (Science Metrix)

published in

• Journal of The American Ceramic Society  Journal

keywords

• 40 Engineering
• 4016 Materials Engineering

Digital Object Identifier (DOI)

• 10.1111/j.1151-2916.1973.tb12438.x

start page

• 619

end page

• 623

volume

• 56

issue

• 12