Effects of PVA-PEG binders system on microstructure and properties of sintered alumina
In this work, the effects of binder compositions on the mechanical properties, density, volume shrinkage and microstructure of sintered alumina were investigated. Three different formulations of alumina samples were prepared by mixing alumina with 3 % of poly (ethylene glycol) (PEG) with 1 to 3 wt%...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Trans Tech Publications
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/37384/1/Effects%20of%20PVA.pdf |
| _version_ | 1825949025274167296 |
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| author | Jaafar, Che Nor Aiza Zainol, Ismail Sulaiman, Shamsuddin Ayub, M. Ikhwan |
| author_facet | Jaafar, Che Nor Aiza Zainol, Ismail Sulaiman, Shamsuddin Ayub, M. Ikhwan |
| author_sort | Jaafar, Che Nor Aiza |
| collection | UPM |
| description | In this work, the effects of binder compositions on the mechanical properties, density, volume shrinkage and microstructure of sintered alumina were investigated. Three different formulations of alumina samples were prepared by mixing alumina with 3 % of poly (ethylene glycol) (PEG) with 1 to 3 wt% of poly (vinyl alcohol) (PVA) binders. The degradation temperature of binder was investigated by means of thermogravimetry analysis (TGA). Diametral compressive test was conducted to determine the tensile strength of sintered alumina. Scanning electron microscopy (SEM) was used to characterise the microstructure and fracture surface analysis. It was found that PVA binder plays important roles in sintering of alumina. The relative density and tensile strength increase as the percentages of PVA increase for each sintering temperature but the volume shrinkages are not much affected by binder composition. The results inferred that alumina samples which have 3%wtPVA-3%wtPEG binder sintered at 1600 °C shows the highest tensile strength (129 MPa) compared to other formulations. |
| first_indexed | 2024-03-06T08:38:13Z |
| format | Article |
| id | upm.eprints-37384 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:38:13Z |
| publishDate | 2014 |
| publisher | Trans Tech Publications |
| record_format | dspace |
| spelling | upm.eprints-373842015-10-05T01:13:12Z http://psasir.upm.edu.my/id/eprint/37384/ Effects of PVA-PEG binders system on microstructure and properties of sintered alumina Jaafar, Che Nor Aiza Zainol, Ismail Sulaiman, Shamsuddin Ayub, M. Ikhwan In this work, the effects of binder compositions on the mechanical properties, density, volume shrinkage and microstructure of sintered alumina were investigated. Three different formulations of alumina samples were prepared by mixing alumina with 3 % of poly (ethylene glycol) (PEG) with 1 to 3 wt% of poly (vinyl alcohol) (PVA) binders. The degradation temperature of binder was investigated by means of thermogravimetry analysis (TGA). Diametral compressive test was conducted to determine the tensile strength of sintered alumina. Scanning electron microscopy (SEM) was used to characterise the microstructure and fracture surface analysis. It was found that PVA binder plays important roles in sintering of alumina. The relative density and tensile strength increase as the percentages of PVA increase for each sintering temperature but the volume shrinkages are not much affected by binder composition. The results inferred that alumina samples which have 3%wtPVA-3%wtPEG binder sintered at 1600 °C shows the highest tensile strength (129 MPa) compared to other formulations. Trans Tech Publications 2014 Article NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/37384/1/Effects%20of%20PVA.pdf Jaafar, Che Nor Aiza and Zainol, Ismail and Sulaiman, Shamsuddin and Ayub, M. Ikhwan (2014) Effects of PVA-PEG binders system on microstructure and properties of sintered alumina. Applied Mechanics and Materials, 564. pp. 355-360. ISSN 1660-9336; ESSN: 1662-7482 http://www.scientific.net/AMM.564.355 10.4028/www.scientific.net/AMM.564.355 |
| spellingShingle | Jaafar, Che Nor Aiza Zainol, Ismail Sulaiman, Shamsuddin Ayub, M. Ikhwan Effects of PVA-PEG binders system on microstructure and properties of sintered alumina |
| title | Effects of PVA-PEG binders system on microstructure and properties of sintered alumina |
| title_full | Effects of PVA-PEG binders system on microstructure and properties of sintered alumina |
| title_fullStr | Effects of PVA-PEG binders system on microstructure and properties of sintered alumina |
| title_full_unstemmed | Effects of PVA-PEG binders system on microstructure and properties of sintered alumina |
| title_short | Effects of PVA-PEG binders system on microstructure and properties of sintered alumina |
| title_sort | effects of pva peg binders system on microstructure and properties of sintered alumina |
| url | http://psasir.upm.edu.my/id/eprint/37384/1/Effects%20of%20PVA.pdf |
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