The Effect of PVA Binder Solvent Composition on the Microstructure and Electrical Properties of 0.98BaTiO3-0.02(Ba0.5Ca0.5)SiO3 Doped with Dy2O3

In this study, the effect of the polyvinyl alcohol (PVA) binder solvent composition on the electrical properties of sintered 0.98BaTiO3-0.02(Ba0.5Ca0.5)SiO3 ceramics doped with x wt.% Dy<...

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Autores principales:	Nak-Beom Jo, Jin-Seok Baek, Eung-Soo Kim
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	BaTiO<sub>3</sub>-based ceramics binder MLCC electrical properties Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/bbe16d279f3545a4b652820ea99670f0
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spelling	oai:doaj.org-article:bbe16d279f3545a4b652820ea99670f02021-11-25T18:51:57ZThe Effect of PVA Binder Solvent Composition on the Microstructure and Electrical Properties of 0.98BaTiO<sub>3</sub>-0.02(Ba<sub>0.5</sub>Ca<sub>0.5</sub>)SiO<sub>3</sub> Doped with Dy<sub>2</sub>O<sub>3</sub>10.3390/pr91120672227-9717https://doaj.org/article/bbe16d279f3545a4b652820ea99670f02021-11-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/2067https://doaj.org/toc/2227-9717In this study, the effect of the polyvinyl alcohol (PVA) binder solvent composition on the electrical properties of sintered 0.98BaTiO<sub>3</sub>-0.02(Ba<sub>0.5</sub>Ca<sub>0.5</sub>)SiO<sub>3</sub> ceramics doped with <i>x</i> wt.% Dy<sub>2</sub>O<sub>3</sub> (0.0 ≤ <i>x</i> ≤ 0.3) was investigated. In the absence of the PVA binder, the specimens sintered at 1260 and 1320 °C for 1 h in a reducing atmosphere showed a single BaTiO<sub>3</sub> phase with the perovskite structure. The relative densities of the specimens were higher than 90%, and the grain morphologies were uniform for all the solvent compositions. At 1 kHz, the dielectric constant of the specimens depended not only on their crystal structural characteristics, but also on their microstructural characteristics. The microstructural characteristics of the specimens with the PVA binder were affected by the ethyl alcohol:water ratio of the 10 wt.% PVA-111 solution. A homogeneous microstructure was observed for the 0.1 wt.% Dy<sub>2</sub>O<sub>3</sub>-doped specimens sintered at 1320 °C for 1 h when the ethyl alcohol/water ratio of the binder solution was 40/60. These specimens showed the maximum dielectric constant (ε<sub>r</sub> = 2723.3) and an insulation resistance of 270 GΩ. The relationships between the microstructural characteristics and dissipation factor (tanδ) of the specimens were also investigated.Nak-Beom JoJin-Seok BaekEung-Soo KimMDPI AGarticleBaTiO<sub>3</sub>-based ceramicsbinderMLCCelectrical propertiesChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 2067, p 2067 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	BaTiO<sub>3</sub>-based ceramics binder MLCC electrical properties Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	BaTiO<sub>3</sub>-based ceramics binder MLCC electrical properties Chemical technology TP1-1185 Chemistry QD1-999 Nak-Beom Jo Jin-Seok Baek Eung-Soo Kim The Effect of PVA Binder Solvent Composition on the Microstructure and Electrical Properties of 0.98BaTiO<sub>3</sub>-0.02(Ba<sub>0.5</sub>Ca<sub>0.5</sub>)SiO<sub>3</sub> Doped with Dy<sub>2</sub>O<sub>3</sub>
description	In this study, the effect of the polyvinyl alcohol (PVA) binder solvent composition on the electrical properties of sintered 0.98BaTiO<sub>3</sub>-0.02(Ba<sub>0.5</sub>Ca<sub>0.5</sub>)SiO<sub>3</sub> ceramics doped with <i>x</i> wt.% Dy<sub>2</sub>O<sub>3</sub> (0.0 ≤ <i>x</i> ≤ 0.3) was investigated. In the absence of the PVA binder, the specimens sintered at 1260 and 1320 °C for 1 h in a reducing atmosphere showed a single BaTiO<sub>3</sub> phase with the perovskite structure. The relative densities of the specimens were higher than 90%, and the grain morphologies were uniform for all the solvent compositions. At 1 kHz, the dielectric constant of the specimens depended not only on their crystal structural characteristics, but also on their microstructural characteristics. The microstructural characteristics of the specimens with the PVA binder were affected by the ethyl alcohol:water ratio of the 10 wt.% PVA-111 solution. A homogeneous microstructure was observed for the 0.1 wt.% Dy<sub>2</sub>O<sub>3</sub>-doped specimens sintered at 1320 °C for 1 h when the ethyl alcohol/water ratio of the binder solution was 40/60. These specimens showed the maximum dielectric constant (ε<sub>r</sub> = 2723.3) and an insulation resistance of 270 GΩ. The relationships between the microstructural characteristics and dissipation factor (tanδ) of the specimens were also investigated.
format	article
author	Nak-Beom Jo Jin-Seok Baek Eung-Soo Kim
author_facet	Nak-Beom Jo Jin-Seok Baek Eung-Soo Kim
author_sort	Nak-Beom Jo
title	The Effect of PVA Binder Solvent Composition on the Microstructure and Electrical Properties of 0.98BaTiO<sub>3</sub>-0.02(Ba<sub>0.5</sub>Ca<sub>0.5</sub>)SiO<sub>3</sub> Doped with Dy<sub>2</sub>O<sub>3</sub>
title_short	The Effect of PVA Binder Solvent Composition on the Microstructure and Electrical Properties of 0.98BaTiO<sub>3</sub>-0.02(Ba<sub>0.5</sub>Ca<sub>0.5</sub>)SiO<sub>3</sub> Doped with Dy<sub>2</sub>O<sub>3</sub>
title_full	The Effect of PVA Binder Solvent Composition on the Microstructure and Electrical Properties of 0.98BaTiO<sub>3</sub>-0.02(Ba<sub>0.5</sub>Ca<sub>0.5</sub>)SiO<sub>3</sub> Doped with Dy<sub>2</sub>O<sub>3</sub>
title_fullStr	The Effect of PVA Binder Solvent Composition on the Microstructure and Electrical Properties of 0.98BaTiO<sub>3</sub>-0.02(Ba<sub>0.5</sub>Ca<sub>0.5</sub>)SiO<sub>3</sub> Doped with Dy<sub>2</sub>O<sub>3</sub>
title_full_unstemmed	The Effect of PVA Binder Solvent Composition on the Microstructure and Electrical Properties of 0.98BaTiO<sub>3</sub>-0.02(Ba<sub>0.5</sub>Ca<sub>0.5</sub>)SiO<sub>3</sub> Doped with Dy<sub>2</sub>O<sub>3</sub>
title_sort	effect of pva binder solvent composition on the microstructure and electrical properties of 0.98batio<sub>3</sub>-0.02(ba<sub>0.5</sub>ca<sub>0.5</sub>)sio<sub>3</sub> doped with dy<sub>2</sub>o<sub>3</sub>
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/bbe16d279f3545a4b652820ea99670f0
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_version_	1718410616400510976

The Effect of PVA Binder Solvent Composition on the Microstructure and Electrical Properties of 0.98BaTiO<sub>3</sub>-0.02(Ba<sub>0.5</sub>Ca<sub>0.5</sub>)SiO<sub>3</sub> Doped with Dy<sub>2</sub>O<sub>3</sub>

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