Microstructure and hardness of Al2O3-ZrO2-Ti composites
Ewelina Rozbiegała, Aleksandra Miazga, Paula Lada, Justyna Zygmuntowicz, Katarzyna Konopka
Quarterly No. 1, 2018 pages 57-62
DOI:
keywords: ZTA composites, titanium, slip – casting method
abstract The aim of this work was to fabricate Al2O3-ZrO2-Ti composites by slip casting and to analyse the influence of a pure titanium addition on the microstructure and density of the composites. For this purpose, two groups of samples were prepared by slip casting, with and without titanium. Experiments were performed using the samples: Al2O3 + 10 vol.% ZrO2 and Al2O3 + 10 vol.% ZrO2 + 10 vol.% Ti. The composites were characterized by XRD and SEM. Moreover, the density was measured using the Archimedes method. The hardness was measured as well. The obtained composites had a homogeneous microstructure and high relative density. It was found that a phase transformation in ZrO2 occurred. The titanium content as a ductile phase can slightly reduce the Vickers hardness of the composites.