Abstract
The fracture toughness of a transformation-toughened glass-ceramic containing 12 vol% t-ZrO2 was measured. Heat-treatment conditions were selected to produce from the same glass composition a glass-ceramic which contained 12 vol% m-ZrO2 in a nearly identical matrix. The transformation-toughened material was found to have a fracture toughness 65% greater than the m-ZrO2-containing material at room temperature. However, at 77 K both materials were found to have approximately the same fracture toughness. Additionally, the susceptibility of the two glass-ceramics to fatigue was determined. No improvement in fatigue behaviour of the transformation-toughened glass-ceramic over the other glass-ceramic was observed.
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Leatherman, G.L., Tomozawa, M. Mechanical properties of a transformation-toughened glass-ceramic. J Mater Sci 25, 4488–4494 (1990). https://doi.org/10.1007/BF00581113
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DOI: https://doi.org/10.1007/BF00581113