To cite this article: Reda, A. E., Abdel Aziz, D. A. N. & Mahani, R. M. (2017). Influence of ZnO on physical, mechanical and dielectric properties of ceramic bodies. J. Phys. Sci., 28(1), 1–13, https://doi.org/10.21315/jps2017.28.1.1
ABSTRACT
Physical, mechanical and dielectric properties of ceramic bodies produced from the low-cost Egyptian raw materials with and without incorporation of ZnO were examined before and after annealing at different temperatures for different annealing times. The development of the crystalline phases was evaluated with x-ray diffraction (XRD). The dielectric properties in terms of the permittivity, dielectric loss and resistivity were investigated in the frequency range (10–1–106 Hz) at room temperature. It was found that annealing negatively affected the physical and mechanical properties of samples. But these properties showed improvements before annealing. On the other hand, the permittivity increased with the increase of ZnO contents, annealing temperature and annealing time. For instance, the non-annealed samples with 5 wt.% ZnO showed a decrease in the amount of water absorption, an increase in the modulus of rupture from 66 to 74.69 N mm–2 and improvements of the dielectric properties. Such samples may be suitable for manufacturing the electrical ceramic capacitors.
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