Pitfalls of determining the elastic properties of stabilized zirconia with indentation methods

Author(s)
K. Werbach, S. Hummel, C. Ebner, U. Lohbauer, H. Peterlik
Abstract

Indentation methods have become popular for determining Young's modulus of materials. Though for most materials this method has been successfully applied, significant errors in the results can occur if materials respond unfavorably to standard indentation parameters. This paper presents an investigation of the effects of microindentation on yttria-stabilized zirconia compared to bulk properties obtained from resonant ultrasound spectroscopy. We not only observed different results for each method, but also a significant change of Young's modulus with indentation depth. Analysis of the microhardness indents with Raman spectroscopy revealed an indentation-induced tetragonal to monoclinic phase transformation in the material. This example shows that it is important to consider the effect of high stresses in indentation methods, as they could severely influence the determination of the material's parameters.

Organisation(s)
Dynamics of Condensed Systems, Physics of Nanostructured Materials, Faculty Center for Nano Structure Research
External organisation(s)
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Journal
Ceramics International
Volume
45
Pages
9491-9496
No. of pages
6
ISSN
0272-8842
DOI
https://doi.org/10.1016/j.ceramint.2018.09.128
Publication date
09-2018
Peer reviewed
Yes
Austrian Fields of Science 2012
Materials physics, Solid state physics, Ceramic materials
Keywords
ASJC Scopus subject areas
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Portal url
https://ucris.univie.ac.at/portal/en/publications/pitfalls-of-determining-the-elastic-properties-of-stabilized-zirconia-with-indentation-methods(7c6ce5a7-6062-4d75-82a4-e759fc26e827).html