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The effect of sintering time on the microstructural and nonlinear electrical properties of Zn-V-Mn-Nb-Gd-O low-voltage varistor ceramics

There is lacking of study on the prolonged sintering time effect on the microstructural and nonlinear electrical properties of ZnO-V2O5-MnO2-Nb2O5-Gd2O3-based low-voltage varistor ceramics sintered at 900 °C. The aim of this study is to investigate the effect of sintering time from 120 to 210 mins o...

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Main Authors: Isa, Nor Hasanah, Azis, Raba'ah Syahidah, Saat, Nor Kamilah, Zakaria, Azmi, Mohammadi, Raheleh, Kinsu, Rosno
Format: Book Section
Language:English
Published: Penerbit Universiti Putra Malaysia 2018
Online Access:http://psasir.upm.edu.my/id/eprint/71811/1/The%20effect%20of%20sintering%20time%20on%20the%20microstructural%20and%20nonlinear%20electrical%20properties%20of%20ZnV-Mn-Nb-Gd-O%20low-voltage%20varistor%20ceramics.pdf
http://psasir.upm.edu.my/id/eprint/71811/
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spelling my.upm.eprints.718112020-04-21T15:23:00Z http://psasir.upm.edu.my/id/eprint/71811/ The effect of sintering time on the microstructural and nonlinear electrical properties of Zn-V-Mn-Nb-Gd-O low-voltage varistor ceramics Isa, Nor Hasanah Azis, Raba'ah Syahidah Saat, Nor Kamilah Zakaria, Azmi Mohammadi, Raheleh Kinsu, Rosno There is lacking of study on the prolonged sintering time effect on the microstructural and nonlinear electrical properties of ZnO-V2O5-MnO2-Nb2O5-Gd2O3-based low-voltage varistor ceramics sintered at 900 °C. The aim of this study is to investigate the effect of sintering time from 120 to 210 mins on the microstructural and nonlinear electrical properties of the ceramics. The prolonged sintering time normally is expected to disrupt the microstructural and to decrease the nonlinear electrical properties of the ceramics. The sample was prepared via solid-state method and sintered at 900 °C. XRD results shows that the MnV, GdMnO3, Mn2Nb2Zn2O9 and ZnV2O4 phase disappeared with increasing sintering time. The ZnO peak shift to the low diffraction angle from 47.5341 to 47.4995° and the interplanar space increases slightly from 1.9129 to 1.9142 Å. The density decreases from 5.22 to 4.62 gcm−3. The average grain size decreases from 3.56 to 3.19 μm due to pinning action by Gd2O3 at the grain boundary which accelerate the annihilation of Zn and O elements as shown by EDX maps. Thus, the barrier height decreases from 0.67 to 0.65eV and nonlinear  value is decreases as expected from 9.91 to 7.01 and correspondingly the breakdown field E1mA decreases from 88.48 to 71.04 V/mm at 210 min. Penerbit Universiti Putra Malaysia 2018 Book Section PeerReviewed text en http://psasir.upm.edu.my/id/eprint/71811/1/The%20effect%20of%20sintering%20time%20on%20the%20microstructural%20and%20nonlinear%20electrical%20properties%20of%20ZnV-Mn-Nb-Gd-O%20low-voltage%20varistor%20ceramics.pdf Isa, Nor Hasanah and Azis, Raba'ah Syahidah and Saat, Nor Kamilah and Zakaria, Azmi and Mohammadi, Raheleh and Kinsu, Rosno (2018) The effect of sintering time on the microstructural and nonlinear electrical properties of Zn-V-Mn-Nb-Gd-O low-voltage varistor ceramics. In: Emerging Themes in Fundamental and Applied Sciences-Physics. Penerbit Universiti Putra Malaysia, Serdang, Selangor, 75 - 82. ISBN 9789673348135
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description There is lacking of study on the prolonged sintering time effect on the microstructural and nonlinear electrical properties of ZnO-V2O5-MnO2-Nb2O5-Gd2O3-based low-voltage varistor ceramics sintered at 900 °C. The aim of this study is to investigate the effect of sintering time from 120 to 210 mins on the microstructural and nonlinear electrical properties of the ceramics. The prolonged sintering time normally is expected to disrupt the microstructural and to decrease the nonlinear electrical properties of the ceramics. The sample was prepared via solid-state method and sintered at 900 °C. XRD results shows that the MnV, GdMnO3, Mn2Nb2Zn2O9 and ZnV2O4 phase disappeared with increasing sintering time. The ZnO peak shift to the low diffraction angle from 47.5341 to 47.4995° and the interplanar space increases slightly from 1.9129 to 1.9142 Å. The density decreases from 5.22 to 4.62 gcm−3. The average grain size decreases from 3.56 to 3.19 μm due to pinning action by Gd2O3 at the grain boundary which accelerate the annihilation of Zn and O elements as shown by EDX maps. Thus, the barrier height decreases from 0.67 to 0.65eV and nonlinear  value is decreases as expected from 9.91 to 7.01 and correspondingly the breakdown field E1mA decreases from 88.48 to 71.04 V/mm at 210 min.
format Book Section
author Isa, Nor Hasanah
Azis, Raba'ah Syahidah
Saat, Nor Kamilah
Zakaria, Azmi
Mohammadi, Raheleh
Kinsu, Rosno
spellingShingle Isa, Nor Hasanah
Azis, Raba'ah Syahidah
Saat, Nor Kamilah
Zakaria, Azmi
Mohammadi, Raheleh
Kinsu, Rosno
The effect of sintering time on the microstructural and nonlinear electrical properties of Zn-V-Mn-Nb-Gd-O low-voltage varistor ceramics
author_facet Isa, Nor Hasanah
Azis, Raba'ah Syahidah
Saat, Nor Kamilah
Zakaria, Azmi
Mohammadi, Raheleh
Kinsu, Rosno
author_sort Isa, Nor Hasanah
title The effect of sintering time on the microstructural and nonlinear electrical properties of Zn-V-Mn-Nb-Gd-O low-voltage varistor ceramics
title_short The effect of sintering time on the microstructural and nonlinear electrical properties of Zn-V-Mn-Nb-Gd-O low-voltage varistor ceramics
title_full The effect of sintering time on the microstructural and nonlinear electrical properties of Zn-V-Mn-Nb-Gd-O low-voltage varistor ceramics
title_fullStr The effect of sintering time on the microstructural and nonlinear electrical properties of Zn-V-Mn-Nb-Gd-O low-voltage varistor ceramics
title_full_unstemmed The effect of sintering time on the microstructural and nonlinear electrical properties of Zn-V-Mn-Nb-Gd-O low-voltage varistor ceramics
title_sort effect of sintering time on the microstructural and nonlinear electrical properties of zn-v-mn-nb-gd-o low-voltage varistor ceramics
publisher Penerbit Universiti Putra Malaysia
publishDate 2018
url http://psasir.upm.edu.my/id/eprint/71811/1/The%20effect%20of%20sintering%20time%20on%20the%20microstructural%20and%20nonlinear%20electrical%20properties%20of%20ZnV-Mn-Nb-Gd-O%20low-voltage%20varistor%20ceramics.pdf
http://psasir.upm.edu.my/id/eprint/71811/
_version_ 1665895990512582656
score 13.211869

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