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Sintering Effects on Microstructure and Electrical Properties of CaCu3Ti4O12 Ceramics

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2013
bitstream_5871.pdf (2.931Mb)
Authors
Marković, Smilja
Lukić, Miodrag J.
Jovalekić, Čedomir
Škapin, Srečo Davor
Suvorov, Danilo
Uskoković, Dragan
Book part (Accepted Version)
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Abstract
CCTO powders were prepared by solid state reaction and mechanochemically, respectively. Synthesized powders were characterized by XRD, FE-SEM and PSA techniques. The sinterability of CCTO powders was investigated by heating microscopy. Powders were uniaxially pressed into pellets and sintered up to 1100 °C, with heating rates of 2, 5, 10 and 20 °/min. The recorded shrinkage curves were used for choosing conventional and two step sintering (TSS) conditions. By TSS the samples were heated up to 1070 °C and after retention for 10 min cooled down to 1020 °C and kept for 20 h. The microstructure of CCTO ceramics sintered by conventional and TSS techniques was examined by FE-SEM method; the electrical properties were investigated in medium frequency (MF) range (42 Hz-5 MHz) and in the microwave (MW) range of frequencies. Electrical properties of the sintered CCTO ceramics were correlated to the samples microstructure. Finally, we have shown that appropriate choice of sintering conditions is ...important for preparation of high-quality CCTO ceramics with high dielectric permittivity in the kilohertz range as well as at the resonant frequency.

Keywords:
calcium copper titanate / electrical properties / microstructure / sintering effects / solid state reaction
Source:
Processing and Properties of Advanced Ceramics and Composites V, 2013, 337-348
Publisher:
  • Hoboken, NJ : John Wiley & Sons
Projects:
  • Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them (RS-45004)
Note:
  • Ceramic Transactions, Volume 240

DOI: 10.1002/9781118744109.ch37

Scopus: 2-s2.0-85018547690
[ Google Scholar ]
URI
http://dais.sanu.ac.rs/123456789/512
Collections
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - CHAP
AU  - Marković, Smilja
AU  - Lukić, Miodrag J.
AU  - Jovalekić, Čedomir
AU  - Škapin, Srečo Davor
AU  - Suvorov, Danilo
AU  - Uskoković, Dragan
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/512
AB  - CCTO powders were prepared by solid state reaction and mechanochemically, respectively. Synthesized powders were characterized by XRD, FE-SEM and PSA techniques. The sinterability of CCTO powders was investigated by heating microscopy. Powders were uniaxially pressed into pellets and sintered up to 1100 °C, with heating rates of 2, 5, 10 and 20 °/min. The recorded shrinkage curves were used for choosing conventional and two step sintering (TSS) conditions. By TSS the samples were heated up to 1070 °C and after retention for 10 min cooled down to 1020 °C and kept for 20 h. The microstructure of CCTO ceramics sintered by conventional and TSS techniques was examined by FE-SEM method; the electrical properties were investigated in medium frequency (MF) range (42 Hz-5 MHz) and in the microwave (MW) range of frequencies. Electrical properties of the sintered CCTO ceramics were correlated to the samples microstructure. Finally, we have shown that appropriate choice of sintering conditions is important for preparation of high-quality CCTO ceramics with high dielectric permittivity in the kilohertz range as well as at the resonant frequency.
PB  - Hoboken, NJ : John Wiley & Sons
T2  - Processing and Properties of Advanced Ceramics and Composites V
T1  - Sintering Effects on Microstructure and Electrical Properties of CaCu3Ti4O12 Ceramics
SP  - 337
EP  - 348
DO  - 10.1002/9781118744109.ch37
ER  - 
@article{
author = "Marković, Smilja and Lukić, Miodrag J. and Jovalekić, Čedomir and Škapin, Srečo Davor and Suvorov, Danilo and Uskoković, Dragan",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/512",
abstract = "CCTO powders were prepared by solid state reaction and mechanochemically, respectively. Synthesized powders were characterized by XRD, FE-SEM and PSA techniques. The sinterability of CCTO powders was investigated by heating microscopy. Powders were uniaxially pressed into pellets and sintered up to 1100 °C, with heating rates of 2, 5, 10 and 20 °/min. The recorded shrinkage curves were used for choosing conventional and two step sintering (TSS) conditions. By TSS the samples were heated up to 1070 °C and after retention for 10 min cooled down to 1020 °C and kept for 20 h. The microstructure of CCTO ceramics sintered by conventional and TSS techniques was examined by FE-SEM method; the electrical properties were investigated in medium frequency (MF) range (42 Hz-5 MHz) and in the microwave (MW) range of frequencies. Electrical properties of the sintered CCTO ceramics were correlated to the samples microstructure. Finally, we have shown that appropriate choice of sintering conditions is important for preparation of high-quality CCTO ceramics with high dielectric permittivity in the kilohertz range as well as at the resonant frequency.",
publisher = "Hoboken, NJ : John Wiley & Sons",
journal = "Processing and Properties of Advanced Ceramics and Composites V",
title = "Sintering Effects on Microstructure and Electrical Properties of CaCu3Ti4O12 Ceramics",
pages = "337-348",
doi = "10.1002/9781118744109.ch37"
}
Marković S, Lukić MJ, Jovalekić Č, Škapin SD, Suvorov D, Uskoković D. Sintering Effects on Microstructure and Electrical Properties of CaCu3Ti4O12 Ceramics. Processing and Properties of Advanced Ceramics and Composites V. 2013;:337-348
Marković, S., Lukić, M. J., Jovalekić, Č., Škapin, S. D., Suvorov, D.,& Uskoković, D. (2013). Sintering Effects on Microstructure and Electrical Properties of CaCu3Ti4O12 Ceramics.
Processing and Properties of Advanced Ceramics and Composites VHoboken, NJ : John Wiley & Sons., null, 337-348. 
https://doi.org/10.1002/9781118744109.ch37
Marković Smilja, Lukić Miodrag J., Jovalekić Čedomir, Škapin Srečo Davor, Suvorov Danilo, Uskoković Dragan, "Sintering Effects on Microstructure and Electrical Properties of CaCu3Ti4O12 Ceramics" null (2013):337-348,
https://doi.org/10.1002/9781118744109.ch37 .

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