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Electronic ceramic structure within the Voronoi cells model and microstructure fractals contacts surfaces new frontier applications

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Author(s): Mitić V.V. | Paunović V. | Janković S. | Pavlović V. | Antolović I. | Rančić D.

Journal: Science of Sintering
ISSN 0350-820X

Volume: 45;
Issue: 2;
Start page: 223;
Date: 2013;
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Keywords: BaTiO3-ceramics | Voronoi model | statistic method | microstructure | fractals

ABSTRACT
In this study, in order to establish grain shapes of sintered ceramics, new approach on correlation between microstructure and doped BaTiO3 -ceramics properties based, on Voronoi model and mathematical statistics calculations on fractal geometry, has been developed. BaTiO3-ceramics doped with Yb2O3 (from 0.1 to 1.0wt% of Yb) were prepared by using conventional solid state procedure and were sintered from 1320°C to 1380°C for four hours. The microstructure of sintered specimens was investigated by Scanning electron microscope JEOL-SEM-5300. For better and deeper characterization and understanding of the ceramics material microstructure, the methods which include the fractal nature structure, and also Voronoi model and mathematical statistics calculations, are applied. In our research the Voronoi is one specific interface between fractal structure nature and different stochastically contact surfaces, defined by statistical mathematical methods. Also, the Voronoi model practically provided possibility to control the ceramics microstructure fractal nature. Mathematical statistic methods enabled establishing the real model for the prognosis based on correlation: synthesis-structures-properties. [Projekat Ministarstva nauke Republike Srbije, br. 172057 i br. III44006]
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