Improvement of colloidal stability in colloidal processing for highly translucent, nanosized zirconia

This study aimed to improve the colloidal stability of yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) suspension through colloidal processing to obtain highly translucent Y-TZP. Agglomeration is often the main complication in the processing of nanosized Y-TZP as it deteriorates mechan...

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Main Authors:	Chin, Chuin Hao, Andanastuti Muchtar, Che Husna Azhari, Masfueh Razali, Mohamed Aboras
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2018
Online Access:	http://journalarticle.ukm.my/12179/ http://journalarticle.ukm.my/12179/ http://journalarticle.ukm.my/12179/1/30%20Chuin%20Hao%20Chin.pdf

id	ukm-12179
recordtype	eprints
spelling	ukm-121792018-10-09T21:05:55Z http://journalarticle.ukm.my/12179/ Improvement of colloidal stability in colloidal processing for highly translucent, nanosized zirconia Chin, Chuin Hao Andanastuti Muchtar, Che Husna Azhari, Masfueh Razali, Mohamed Aboras, This study aimed to improve the colloidal stability of yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) suspension through colloidal processing to obtain highly translucent Y-TZP. Agglomeration is often the main complication in the processing of nanosized Y-TZP as it deteriorates mechanical and optical properties. Thus, colloidal processing is necessary to mitigate the agglomeration in Y-TZP. The colloidal stability of Y-TZP suspension plays a key role for the success of colloidal processing. In this study, colloidal processing was conducted at several stages, namely, dispersant addition, pH adjustment and sedimentation. Changes in particle size and zeta potential at various stages were recorded. The suspensions were then slip-casted to form green bodies. Green bodies were sintered and characterized for density and translucency. The results showed that dispersant addition followed by pH adjustment effectively dispersed soft agglomerates by introducing electrosteric stabilization, whereas sedimentation successfully segregated hard agglomerates and contributed excellent colloidal stability. With high colloidal stability, the translucency of Y-TZP was improved by approximately 30%. This study demonstrated different colloidal processing stages and proved that high colloidal stability and fine particle size are vital to produce highly translucent Y-TZP. Penerbit Universiti Kebangsaan Malaysia 2018-07 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/12179/1/30%20Chuin%20Hao%20Chin.pdf Chin, Chuin Hao and Andanastuti Muchtar, and Che Husna Azhari, and Masfueh Razali, and Mohamed Aboras, (2018) Improvement of colloidal stability in colloidal processing for highly translucent, nanosized zirconia. Sains Malaysiana, 47 (7). pp. 1591-1597. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol47num7_2018/contentsVol47num7_2018.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	This study aimed to improve the colloidal stability of yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) suspension through colloidal processing to obtain highly translucent Y-TZP. Agglomeration is often the main complication in the processing of nanosized Y-TZP as it deteriorates mechanical and optical properties. Thus, colloidal processing is necessary to mitigate the agglomeration in Y-TZP. The colloidal stability of Y-TZP suspension plays a key role for the success of colloidal processing. In this study, colloidal processing was conducted at several stages, namely, dispersant addition, pH adjustment and sedimentation. Changes in particle size and zeta potential at various stages were recorded. The suspensions were then slip-casted to form green bodies. Green bodies were sintered and characterized for density and translucency. The results showed that dispersant addition followed by pH adjustment effectively dispersed soft agglomerates by introducing electrosteric stabilization, whereas sedimentation successfully segregated hard agglomerates and contributed excellent colloidal stability. With high colloidal stability, the translucency of Y-TZP was improved by approximately 30%. This study demonstrated different colloidal processing stages and proved that high colloidal stability and fine particle size are vital to produce highly translucent Y-TZP.
format	Article
author	Chin, Chuin Hao Andanastuti Muchtar, Che Husna Azhari, Masfueh Razali, Mohamed Aboras,
spellingShingle	Chin, Chuin Hao Andanastuti Muchtar, Che Husna Azhari, Masfueh Razali, Mohamed Aboras, Improvement of colloidal stability in colloidal processing for highly translucent, nanosized zirconia
author_facet	Chin, Chuin Hao Andanastuti Muchtar, Che Husna Azhari, Masfueh Razali, Mohamed Aboras,
author_sort	Chin, Chuin Hao
title	Improvement of colloidal stability in colloidal processing for highly translucent, nanosized zirconia
title_short	Improvement of colloidal stability in colloidal processing for highly translucent, nanosized zirconia
title_full	Improvement of colloidal stability in colloidal processing for highly translucent, nanosized zirconia
title_fullStr	Improvement of colloidal stability in colloidal processing for highly translucent, nanosized zirconia
title_full_unstemmed	Improvement of colloidal stability in colloidal processing for highly translucent, nanosized zirconia
title_sort	improvement of colloidal stability in colloidal processing for highly translucent, nanosized zirconia
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2018
url	http://journalarticle.ukm.my/12179/ http://journalarticle.ukm.my/12179/ http://journalarticle.ukm.my/12179/1/30%20Chuin%20Hao%20Chin.pdf
first_indexed	2023-09-18T20:02:02Z
last_indexed	2023-09-18T20:02:02Z
_version_	1777406912802848768

Improvement of colloidal stability in colloidal processing for highly translucent, nanosized zirconia

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