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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| Format: | Article |
| Language: | English |
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Penerbit Universiti Kebangsaan Malaysia
2018
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| Online Access: | http://journalarticle.ukm.my/12179/ http://journalarticle.ukm.my/12179/1/30%20Chuin%20Hao%20Chin.pdf |
| _version_ | 1848812931546873856 |
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| author | Chin, Chuin Hao Andanastuti Muchtar, Che Husna Azhari, Masfueh Razali, Mohamed Aboras, |
| author_facet | Chin, Chuin Hao Andanastuti Muchtar, Che Husna Azhari, Masfueh Razali, Mohamed Aboras, |
| author_sort | Chin, Chuin Hao |
| building | UKM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T00:10:08Z |
| format | Article |
| id | oai:generic.eprints.org:12179 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T00:10:08Z |
| publishDate | 2018 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| recordtype | eprints |
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| spelling | oai:generic.eprints.org: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 |
| 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 |
| title | 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_short | 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 |
| url | http://journalarticle.ukm.my/12179/ http://journalarticle.ukm.my/12179/ http://journalarticle.ukm.my/12179/1/30%20Chuin%20Hao%20Chin.pdf |