M. Wirwicki
2018
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Abstract
Zirconium dioxide is a material known over 60 years, used for the production of ceramic and hybrid bearings and in dentistry: bows, crowns, and bridges. For testing the strength of zirconium dioxide, normative samples were made, which were subjected to strength tests. Microscopic analysis of sample fracture was performed. In addition, zirconium oxide is an easy to process material. Zirconium dioxide is a polymorphic material exhibiting three phases: monocyclic, cubic and tetragonal. In addition, during propagation of cracks, the material shows a strengthening transformation; replacement of phase and increase of the volume of molecules that inhibit microcracks in the material. For a better illustration of the destruction of the samples, a two-parameter analysis of the Weibull distribution was made, which, as shown in the literature review for this type of research is standard. This analysis is described in the standard related to statistical analysis of advanced ceramics. The paper presents the original technology of making zirconium dioxide samples, tests of strength on a servo-hydraulic machine Instron 8874 and microscopic analysis of the obtained results.