Sintering Effects on Microstructure and Electrical Properties of CaCu3Ti4O12 Ceramics
Authors
Marković, Smilja
Lukić, Miodrag J.

Jovalekić, Čedomir

Škapin, Srečo Davor

Suvorov, Danilo
Uskoković, Dragan

Book part (Accepted Version)
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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 reactionSource:
Processing and Properties of Advanced Ceramics and Composites V, 2013, 337-348Publisher:
- Hoboken, NJ : John Wiley & Sons
Funding / projects:
Note:
- Ceramic Transactions, Volume 240
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - CHAP AU - Marković, Smilja AU - Lukić, Miodrag J. AU - Jovalekić, Čedomir AU - Škapin, Srečo Davor AU - Suvorov, Danilo AU - Uskoković, Dragan PY - 2013 UR - https://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 UR - https://hdl.handle.net/21.15107/rcub_dais_512 ER -
@inbook{ author = "Marković, Smilja and Lukić, Miodrag J. and Jovalekić, Čedomir and Škapin, Srečo Davor and Suvorov, Danilo and Uskoković, Dragan", year = "2013", 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", booktitle = "Sintering Effects on Microstructure and Electrical Properties of CaCu3Ti4O12 Ceramics", pages = "337-348", doi = "10.1002/9781118744109.ch37", url = "https://hdl.handle.net/21.15107/rcub_dais_512" }
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. in Processing and Properties of Advanced Ceramics and Composites V Hoboken, NJ : John Wiley & Sons., 337-348. https://doi.org/10.1002/9781118744109.ch37 https://hdl.handle.net/21.15107/rcub_dais_512
Marković S, Lukić MJ, Jovalekić Č, Škapin SD, Suvorov D, Uskoković D. Sintering Effects on Microstructure and Electrical Properties of CaCu3Ti4O12 Ceramics. in Processing and Properties of Advanced Ceramics and Composites V. 2013;:337-348. doi:10.1002/9781118744109.ch37 https://hdl.handle.net/21.15107/rcub_dais_512 .
Marković, Smilja, Lukić, Miodrag J., Jovalekić, Čedomir, Škapin, Srečo Davor, Suvorov, Danilo, Uskoković, Dragan, "Sintering Effects on Microstructure and Electrical Properties of CaCu3Ti4O12 Ceramics" in Processing and Properties of Advanced Ceramics and Composites V (2013):337-348, https://doi.org/10.1002/9781118744109.ch37 ., https://hdl.handle.net/21.15107/rcub_dais_512 .