Effect of sintering temperature on dielectric and electrical properties of bio-waste derived beta-dicalcium silicate

Beta-dicalcium silicate ceramics were synthesized by mechanochemical-assisted solid-state reaction route using rice husks and chicken eggshells as silica and calcium oxide sources. The ceramics were sintered at 900, 1000, and 1100 °C for 2 h in air. The effect of sintering temperature on these ceram...

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Main Authors: Mohd Yunus, Siti Nur Hazwani, Shing Fhan, Khor, Johar, Banjuraizah, Adzali, Nur Maizatul Shima, Jakfar, Nur Hazlinda, Ee Meng, Cheng, Mohd Tarmizi, Emma Ziezie, Talib, Zainal Abidin
Format: Article
Language:English
Published: Elsevier 2023
Online Access:http://psasir.upm.edu.my/id/eprint/107531/1/Effect%20of%20Sintering%20Temperature%20on%20Dielectric%20and%20Electrical%20Properties%20of%20Bio-Waste%20Derived%20Beta-Dicalcium%20Silicate.pdf
http://psasir.upm.edu.my/id/eprint/107531/
https://www.sciencedirect.com/science/article/pii/S0254058423010477?via%3Dihub
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spelling my.upm.eprints.1075312024-10-17T07:24:04Z http://psasir.upm.edu.my/id/eprint/107531/ Effect of sintering temperature on dielectric and electrical properties of bio-waste derived beta-dicalcium silicate Mohd Yunus, Siti Nur Hazwani Shing Fhan, Khor Johar, Banjuraizah Adzali, Nur Maizatul Shima Jakfar, Nur Hazlinda Ee Meng, Cheng Mohd Tarmizi, Emma Ziezie Talib, Zainal Abidin Beta-dicalcium silicate ceramics were synthesized by mechanochemical-assisted solid-state reaction route using rice husks and chicken eggshells as silica and calcium oxide sources. The ceramics were sintered at 900, 1000, and 1100 °C for 2 h in air. The effect of sintering temperature on these ceramics' morphological, breakdown strength, dielectric, and electrical properties was investigated. It was found that the ceramic sintered at the optimized temperature of 1100 °C formed the pure β-dicalcium silicate (β-Ca2SiO4). Scanning electron micrographs showed that with the increase in sintering temperature, the average grain size and pore size of the sintered ceramics increased while the grain boundary density decreased, which promoted the breakdown path and resulted in a decrease in breakdown strength. The dielectric behavior examined from 25 to 300 °C and in a frequency range of 4–5 MHz found that the dielectric constant and loss tangent decreased with increasing frequency. Nyquist plot of impedance confirmed a non-Debye type relaxation, and grain and grain boundary contributions were revealed from equivalent circuit fitting. Variations of impedance spectroscopy reflect the positive and negative temperature coefficient of resistance behavior for these ceramics. Electric modulus spectra revealed that with the sintering temperature increase, the samples' conductivity activation energies increased from 0.35 to 0.46 eV. All the sintered samples attained low dielectric loss (0.004 < tan δ < 0.1) above 103 Hz, which makes them suitable materials for capacitor application. Elsevier 2023-11-01 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/107531/1/Effect%20of%20Sintering%20Temperature%20on%20Dielectric%20and%20Electrical%20Properties%20of%20Bio-Waste%20Derived%20Beta-Dicalcium%20Silicate.pdf Mohd Yunus, Siti Nur Hazwani and Shing Fhan, Khor and Johar, Banjuraizah and Adzali, Nur Maizatul Shima and Jakfar, Nur Hazlinda and Ee Meng, Cheng and Mohd Tarmizi, Emma Ziezie and Talib, Zainal Abidin (2023) Effect of sintering temperature on dielectric and electrical properties of bio-waste derived beta-dicalcium silicate. Materials Chemistry and Physics, 309. art. no. 128339. pp. 1-15. ISSN 0254-0584; ESSN: 1879-3312 https://www.sciencedirect.com/science/article/pii/S0254058423010477?via%3Dihub 10.1016/j.matchemphys.2023.128339
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 Beta-dicalcium silicate ceramics were synthesized by mechanochemical-assisted solid-state reaction route using rice husks and chicken eggshells as silica and calcium oxide sources. The ceramics were sintered at 900, 1000, and 1100 °C for 2 h in air. The effect of sintering temperature on these ceramics' morphological, breakdown strength, dielectric, and electrical properties was investigated. It was found that the ceramic sintered at the optimized temperature of 1100 °C formed the pure β-dicalcium silicate (β-Ca2SiO4). Scanning electron micrographs showed that with the increase in sintering temperature, the average grain size and pore size of the sintered ceramics increased while the grain boundary density decreased, which promoted the breakdown path and resulted in a decrease in breakdown strength. The dielectric behavior examined from 25 to 300 °C and in a frequency range of 4–5 MHz found that the dielectric constant and loss tangent decreased with increasing frequency. Nyquist plot of impedance confirmed a non-Debye type relaxation, and grain and grain boundary contributions were revealed from equivalent circuit fitting. Variations of impedance spectroscopy reflect the positive and negative temperature coefficient of resistance behavior for these ceramics. Electric modulus spectra revealed that with the sintering temperature increase, the samples' conductivity activation energies increased from 0.35 to 0.46 eV. All the sintered samples attained low dielectric loss (0.004 < tan δ < 0.1) above 103 Hz, which makes them suitable materials for capacitor application.
format Article
author Mohd Yunus, Siti Nur Hazwani
Shing Fhan, Khor
Johar, Banjuraizah
Adzali, Nur Maizatul Shima
Jakfar, Nur Hazlinda
Ee Meng, Cheng
Mohd Tarmizi, Emma Ziezie
Talib, Zainal Abidin
spellingShingle Mohd Yunus, Siti Nur Hazwani
Shing Fhan, Khor
Johar, Banjuraizah
Adzali, Nur Maizatul Shima
Jakfar, Nur Hazlinda
Ee Meng, Cheng
Mohd Tarmizi, Emma Ziezie
Talib, Zainal Abidin
Effect of sintering temperature on dielectric and electrical properties of bio-waste derived beta-dicalcium silicate
author_facet Mohd Yunus, Siti Nur Hazwani
Shing Fhan, Khor
Johar, Banjuraizah
Adzali, Nur Maizatul Shima
Jakfar, Nur Hazlinda
Ee Meng, Cheng
Mohd Tarmizi, Emma Ziezie
Talib, Zainal Abidin
author_sort Mohd Yunus, Siti Nur Hazwani
title Effect of sintering temperature on dielectric and electrical properties of bio-waste derived beta-dicalcium silicate
title_short Effect of sintering temperature on dielectric and electrical properties of bio-waste derived beta-dicalcium silicate
title_full Effect of sintering temperature on dielectric and electrical properties of bio-waste derived beta-dicalcium silicate
title_fullStr Effect of sintering temperature on dielectric and electrical properties of bio-waste derived beta-dicalcium silicate
title_full_unstemmed Effect of sintering temperature on dielectric and electrical properties of bio-waste derived beta-dicalcium silicate
title_sort effect of sintering temperature on dielectric and electrical properties of bio-waste derived beta-dicalcium silicate
publisher Elsevier
publishDate 2023
url http://psasir.upm.edu.my/id/eprint/107531/1/Effect%20of%20Sintering%20Temperature%20on%20Dielectric%20and%20Electrical%20Properties%20of%20Bio-Waste%20Derived%20Beta-Dicalcium%20Silicate.pdf
http://psasir.upm.edu.my/id/eprint/107531/
https://www.sciencedirect.com/science/article/pii/S0254058423010477?via%3Dihub
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score 13.209306