Effects of ultrasonication and conventional mechanical homogenization processes on the structures and dielectric properties of BaTiO3 ceramics
| Autor: | O. Yılmaz, Hatice Zehra Akbas, Zeki Aydin, Selvin Turgut |
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| Přispěvatelé: | İskenderun Teknik Üniversitesi, Yılmaz, Onur |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Diffraction
Ceramics Acoustics and Ultrasonics Barium titanate Niobium Barium derivative 02 engineering and technology Titanium derivative 01 natural sciences Dielectric losses Ultrasonic waves Solid state chemistry.chemical_compound Electric conductivity Size Crystal impurities Polarization Densification Solid state reaction method Ceramic materials Chemical Engineering (miscellaneous) Homogenization method Composite material Microstructure Infrared spectroscopy Priority journal Multidisciplinary Carbonic acid Fourier transform infrared spectroscopy Particle size 021001 nanoscience & nanotechnology Niobium compounds Chemistry High-intensity ultrasonic wave Homogenization process Acoustic cavitations Barium Dielectric properties Dielectric loss Mechanical alloying Powders 0210 nano-technology Mechanical milling Permittivity X ray diffraction Sonication Nanotechnology Dielectric 010402 general chemistry Homogenization (chemistry) Structure analysis Inorganic Chemistry Ultrasound Environmental Chemistry Radiology Nuclear Medicine and imaging Dielectric constant Chemical bond Electrical-properties X ray powder diffraction Organic Chemistry Acoustics 0104 chemical sciences Nanostructures chemistry Ultra-sonication Wide frequency range Ultrasonic homogenization Ultrasonication Ultrasonic sensor Solid state reactions Milling (machining) |
| Popis: | WOS: 000387626500095 27773315 The effects of the homogenization process on the structures and dielectric properties of pure and Nb-doped BaTiO3 ceramics have been investigated using an ultrasonic homogenization and conventional mechanical methods. The reagents were homogenized using an ultrasonic processor with high-intensity ultrasonic waves and using a compact mixer-shaker. The components and crystal types of the powders were determined by Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analyses. The complex permittivity (epsilon', epsilon'') and AC conductivity (sigma') of the samples were analyzed in a wide frequency range of 20 Hz to 2 MHz at room temperature. The structures and dielectric properties of pure and Nb-doped BaTiO3 ceramics strongly depend on the homogenization process in a solid-state reaction method. Using an ultrasonic processor with high-intensity ultrasonic waves based on acoustic cavitation phenomena can make a significant improvement in producing high-purity BaTiO3 ceramics without carbonate impurities with a small dielectric loss. (C) 2016 Elsevier B.V. All rights reserved. scientific research projects coordination units at Mustafa Kemal University [326] This research was supported by the scientific research projects coordination units at Mustafa Kemal University (Grant no = 326). The authors are grateful to MARGEM, Mustafa Kemal University, for helping to collect SEM data and LCR data. The authors gratefully acknowledge support from HUMEL, Harran University, for helping to collect XRD data. |
| Databáze: | OpenAIRE |
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