Pressure sensing behaviour of sodium bismuth titanate ceramics

A study to determine the microstructure and pressure sensing behaviour of Na0.45Bi0.55TiO3 (NBT) as lead-free ceramics has been conducted. NBT ceramics were prepared using the solid state reaction technique from stoichiometric mixture of Na2CO3, Bi2O3 and TiO2 powders. The mixture was sintered at th...

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Main Authors:	Mohammad Hafizuddin Haji Jumali, Mohd Riduan Mt Said, Ngoi, Yung Wee, Muhammad Yahaya
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2010
Online Access:	http://journalarticle.ukm.my/7381/ http://journalarticle.ukm.my/7381/ http://journalarticle.ukm.my/7381/1/01_Md_Yeaminhossain.pdf

id	ukm-7381
recordtype	eprints
spelling	ukm-73812016-12-14T06:43:54Z http://journalarticle.ukm.my/7381/ Pressure sensing behaviour of sodium bismuth titanate ceramics Mohammad Hafizuddin Haji Jumali, Mohd Riduan Mt Said, Ngoi, Yung Wee Muhammad Yahaya, A study to determine the microstructure and pressure sensing behaviour of Na0.45Bi0.55TiO3 (NBT) as lead-free ceramics has been conducted. NBT ceramics were prepared using the solid state reaction technique from stoichiometric mixture of Na2CO3, Bi2O3 and TiO2 powders. The mixture was sintered at three different temperatures namely 1100 oC, 1200 oC, 1300 oC for 12 hours. After sintering, the NBT powders were ground and pressed into pellet with 13 mm diameter and subsequently heated at 700 oC for 2 hours. Microstructure and morphology of the samples were determined using XRD and SEM, respectively. Customized pressure chamber using pneumatic load was employed for pressure sensing behaviour of the samples. X-ray diffraction analysis revealed that all samples consist of more than 70% of polycrystalline, rhombohedral NBT phase, with bismuth titanate, Bi2Ti2O7 (BTO) as the secondary phase. The increment in sintering temperature has resulted in the formation of higher NBT content in the sample. SEM micrographs showed that grain size and bulk density of the samples increased with the increment of sintering temperature. Pressure sensing test showed that all samples were responsive toward pressure variations only when initial voltage was applied to the ceramics. Based on density, stability and repeatability in pressure sensing behavior, NBT ceramic sintered at 1200 oC was the best ceramic with great potential as lead free pressure sensing material. Universiti Kebangsaan Malaysia 2010-08 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7381/1/01_Md_Yeaminhossain.pdf Mohammad Hafizuddin Haji Jumali, and Mohd Riduan Mt Said, and Ngoi, Yung Wee and Muhammad Yahaya, (2010) Pressure sensing behaviour of sodium bismuth titanate ceramics. Sains Malaysiana, 39 (4). pp. 621-626. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol39num4_2010/contentsVol39num4_2010.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	A study to determine the microstructure and pressure sensing behaviour of Na0.45Bi0.55TiO3 (NBT) as lead-free ceramics has been conducted. NBT ceramics were prepared using the solid state reaction technique from stoichiometric mixture of Na2CO3, Bi2O3 and TiO2 powders. The mixture was sintered at three different temperatures namely 1100 oC, 1200 oC, 1300 oC for 12 hours. After sintering, the NBT powders were ground and pressed into pellet with 13 mm diameter and subsequently heated at 700 oC for 2 hours. Microstructure and morphology of the samples were determined using XRD and SEM, respectively. Customized pressure chamber using pneumatic load was employed for pressure sensing behaviour of the samples. X-ray diffraction analysis revealed that all samples consist of more than 70% of polycrystalline, rhombohedral NBT phase, with bismuth titanate, Bi2Ti2O7 (BTO) as the secondary phase. The increment in sintering temperature has resulted in the formation of higher NBT content in the sample. SEM micrographs showed that grain size and bulk density of the samples increased with the increment of sintering temperature. Pressure sensing test showed that all samples were responsive toward pressure variations only when initial voltage was applied to the ceramics. Based on density, stability and repeatability in pressure sensing behavior, NBT ceramic sintered at 1200 oC was the best ceramic with great potential as lead free pressure sensing material.
format	Article
author	Mohammad Hafizuddin Haji Jumali, Mohd Riduan Mt Said, Ngoi, Yung Wee Muhammad Yahaya,
spellingShingle	Mohammad Hafizuddin Haji Jumali, Mohd Riduan Mt Said, Ngoi, Yung Wee Muhammad Yahaya, Pressure sensing behaviour of sodium bismuth titanate ceramics
author_facet	Mohammad Hafizuddin Haji Jumali, Mohd Riduan Mt Said, Ngoi, Yung Wee Muhammad Yahaya,
author_sort	Mohammad Hafizuddin Haji Jumali,
title	Pressure sensing behaviour of sodium bismuth titanate ceramics
title_short	Pressure sensing behaviour of sodium bismuth titanate ceramics
title_full	Pressure sensing behaviour of sodium bismuth titanate ceramics
title_fullStr	Pressure sensing behaviour of sodium bismuth titanate ceramics
title_full_unstemmed	Pressure sensing behaviour of sodium bismuth titanate ceramics
title_sort	pressure sensing behaviour of sodium bismuth titanate ceramics
publisher	Universiti Kebangsaan Malaysia
publishDate	2010
url	http://journalarticle.ukm.my/7381/ http://journalarticle.ukm.my/7381/ http://journalarticle.ukm.my/7381/1/01_Md_Yeaminhossain.pdf
first_indexed	2023-09-18T19:49:33Z
last_indexed	2023-09-18T19:49:33Z
_version_	1777406127132114944

Pressure sensing behaviour of sodium bismuth titanate ceramics

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