Abstract
In recent years strong research efforts were made to reduce the inherent brittleness of structural ceramics. One promising material is transformation toughened ZrO2, where the stress induced tetragonal to monoclinic (t-m) transformation can be used to increase strength and fracture toughness. With the use of different additions (stabilizers) such as Y2O3, CeO2, MgO etc. the t-m transformation behaviour can be varied, leading to transformation zone sizes in the range of a few μm (e.g.Y2O3) up to mm (e.g. CeO2). While Y2O3 stabilized ZrO2 ceramics (Y-TZP) reveal rather limited toughness values due to small transformation zones, pronounced R-curve behaviour can be obtained for ZrO2 materials stabilized with MgO and CeO2.
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Matt, R., Grathwohl, G. (1996). The Influence of Processing Techniques on the Fatigue Properties of Yttria Stabilized Zirconia with Different Grain Sizes. In: Bradt, R.C., Hasselman, D.P.H., Munz, D., Sakai, M., Shevchenko, V.Y. (eds) Fracture Mechanics of Ceramics. Fracture Mechanics of Ceramics, vol 12. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5853-8_6
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DOI: https://doi.org/10.1007/978-1-4615-5853-8_6
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