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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%...

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Main Authors: Jaafar, Che Nor Aiza, Zainol, Ismail, Sulaiman, Shamsuddin, Ayub, M. Ikhwan
Format: Article
Language:English
Published: Trans Tech Publications 2014
Online Access:http://psasir.upm.edu.my/id/eprint/37384/1/Effects%20of%20PVA.pdf
http://psasir.upm.edu.my/id/eprint/37384/
http://www.scientific.net/AMM.564.355
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spelling my.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
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
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.
format Article
author Jaafar, Che Nor Aiza
Zainol, Ismail
Sulaiman, Shamsuddin
Ayub, M. Ikhwan
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
author_facet Jaafar, Che Nor Aiza
Zainol, Ismail
Sulaiman, Shamsuddin
Ayub, M. Ikhwan
author_sort Jaafar, Che Nor Aiza
title 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_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_sort effects of pva-peg binders system on microstructure and properties of sintered alumina
publisher Trans Tech Publications
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/37384/1/Effects%20of%20PVA.pdf
http://psasir.upm.edu.my/id/eprint/37384/
http://www.scientific.net/AMM.564.355
_version_ 1643831973689425920
score 13.211869

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