×
Home Current Archive Editorial board
News Contact
Original scientific article

CERAMICS MATERIALS MICROSTRUCTURE PROGNOSIS WITHIN THE ALTERNATIVE ENERGY SOURCES AND STRUCTURE FRACTAL NATURE FRONTIERS

By
V. Vojislav Mitić ,
V. Vojislav Mitić
Contact V. Vojislav Mitić

Faculty of Electronic Engineering, University of Nis, Niš, Serbia

Institute of Technical Sciences of SASA, Belgrade, Serbia

Ljubiša Kocić ,
Ljubiša Kocić

Faculty of Electronic Engineering, University of Nis, Niš, Serbia

Vesna Paunović ,
Vesna Paunović

Faculty of Electronic Engineering, University of Nis, Niš, Serbia

Filip Bastić
Filip Bastić
Contact Filip Bastić

Faculty of Electronic Engineering, University of Nis, Niš, Serbia

Institute of Technical Sciences of SASA, Belgrade, Serbia

Abstract

Doped ceramics materials structure can be controlled using different synergetic effects as well as consolidation parameters. Additives concentration influence on ceramics microstructure and dielectric properties, based on fractal geometry, is analyzed. These properties level control level is very important in advanced materials prognosis. The Coble's two-sphere model is used as initial one, for developing a new two-ellipsoid model; unlike the spherical geometry, the ellipsoidal-polyhedral geometry,besides better approximation of sintering particles, is in relation with consolidation parameters (sintering time and temperature). The experiments have been based on BaTiO3 with different additives (CeO2, MnCO3, Bi2O3, Fe2O3, Nb2O5, CaZr2O3, Er2O3, Yb2O3, Ho2O3), concentration from 0.01wt% to 1wt%, consolidated under the pressing pressure up to 150 MPa and 1180°C-1380°C sintering temperatures, are used. We performed SEM and EDS analysis.

The fractal nature offers a new approach for the ceramics structure analysis, describing, prognosis and modeling the grains shape and relations between ceramics structure and electric-dielectric properties. The microstructure has a great importance from different alternative energies points of view. World’s interest race in renewable and new generation energy sources development, especially the new batteries systems, are in research and development focus, simultaneously, in the electric cars technologies development. Beside the electrochemical processes and rechargeable speed, the storage capacity has special significance which is enriched by the fractal natureanalysis and these scientific paper contributions with some fundamental electrochemical laws through fractal corrections expressed by the relevant formulas. These are the new frontiers in direction of electrochemical fractal microelectronics. Also, the wind energy as new and alternative energy source has important role growing.

The land and obstacles of fractal nature, influence on air/wind turbulence towards the wind generators propellers, has special effect on the wind speed, described by the logarithmic law equation which is deduced from the similarity theory that is strictly applicable to steady-state horizontally homogeneous conditions in the surface layer. So, definitely in this paper the fractal nature independently existing everywhere within the structures, contact surfaces, practically, from microstructures, even on nano level up to global bulk and massive shapes, fractal nature ceramics materials existence is completely confirmed within the electrochemical thermodynamic and fluid dynamics parameters, are confirmed.

References

1.
Mandelbrot B. The Fractal Geometry of Nature, W. 1983.
2.
Barnsley M. Fractals everywhere. 1988.
3.
Mandelbrot B. Les objets fractals, forme, hasard et dimension. 1975.
4.
Mitić VV. Structure and electrical properties of BaTiO3-ceramics, Monography, Andrejević Foundation. 2001.
5.
Mitić VV, Kocić LM, Mitrović I, Ristić MM. Models of BaTiO3 Ceramics Grains Contact Surfaces. In: The 4th IUMRS International Conference in Asia OVTA Makuhari. 1997.
6.
Mitić VV, Pavlović VB, Kocić LM, Paunović V, Mančić D. Application of the Intergranular Impedance Model in Correlating Microstructure and Electrical Properties of Doped BaTiO3. Science of Sintering. 2009;41(3):247–56.
7.
Mitić VV, Paunović V, Kocić L. Fractal approach to BaTiO3-ceramics micro-impedances. Ceramics Int. 2015;41(5):6566–74.
8.
Mitić VV, Kocić L. Fractal nature structure, grains and pores, reconstruction analysis method and application in advance designed microstructure properties prognosis function, Patent. Application number. 2015;
9.
Thompson H, Katz AJ, Krohn CE. Method and means for determining physical properties form measurements of microstructure in porous media. United States Patent. 1986;Patent number (4,628,468.
10.
Bastić F. The Fractal Nature Materials Microstructure Influence on the Battery Systems and Fuel Cells Energy Efficiency and Capacity Increasing. 2014.
11.
Mitić VV, Kocić LM, Paunović V, Bastić F, Sirmić D. The Fractal Nature Materials Microstructure Influence on Electrochemical Energy Sources. Science of Sintering. 2015;47(2):195–204.
12.
Mitić VV, Paunović V, Kocić L. Dielectric Properties of BaTiO3 Ceramics and Curie-Weiss and Modified Curie-Weiss Affected by Fractal Morphology. Advanced Processing and Manyfacturing Technologies for Nanostructured and Multifunctional Materials. 2014;35(6):123–33.
13.
Sirmić D. Wind Energy as Alternative Source and Fractal Nature Analysis Application in Wind Generators Materials Consolidation. 2014.
14.
Obuhov AM. Turbulentnost’ idinamikaatmosfery, Gidrometeoizdat. 1988.

Citation

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 

Article metrics

Google scholar: See link

The statements, opinions and data contained in the journal are solely those of the individual authors and contributors and not of the publisher and the editor(s). We stay neutral with regard to jurisdictional claims in published maps and institutional affiliations.