Fracture resistance of yttria stabilized zirconia manufactured from stabilizer-coated nanopowder by micro cantilever bending tests

Giese S, Kern F, Macauley C, Neumeier S, Göken M (2019)

Publication Type: Journal article

Publication year: 2019

Journal

DOI: 10.1016/j.jeurceramsoc.2019.05.006

Abstract

Yttria stabilized tetragonal zirconia polycrystal (Y-TZP)owes its high toughness to transformation toughening, a mechanism that requires the development of a process zone. It is important to measure if and to what extent the size of components can be reduced. In this study, tests were carried out using focused ion beam or picosecond milled pre-notched, 3 mol percent Y 2 O 3 (3Y-)TZP micro-cantilever (10–250 μm)beams. The tests show clearly that the maximum fracture resistance is size dependent and the plateau toughness was not reached in any of the small-scale samples. A correlation between transformability of the tetragonal phase and the measured fracture resistance became visible only for the largest micro cantilever but did not reach the values measured in macroscopic samples. Based on these results, it is not advantageous to use very tough zirconia materials in components with dimensions smaller than ∼0.25 mm, as the high toughness is not fully realized.

Authors with CRIS profile

Additional Organisation(s)

Involved external institutions

Universität Stuttgart Germany (DE)

How to cite

APA:

Giese, S., Kern, F., Macauley, C., Neumeier, S., & Göken, M. (2019). Fracture resistance of yttria stabilized zirconia manufactured from stabilizer-coated nanopowder by micro cantilever bending tests. Journal of the European Ceramic Society. https://doi.org/10.1016/j.jeurceramsoc.2019.05.006

MLA:

Giese, Sven, et al. "Fracture resistance of yttria stabilized zirconia manufactured from stabilizer-coated nanopowder by micro cantilever bending tests." Journal of the European Ceramic Society (2019).

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