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Characterization of alumina foam from casting process

Abd Rahman, Hamimah and Yap , Ching Guan (2008) Characterization of alumina foam from casting process. In: International Conference on Mechanical and Manufacturing Engineering 2008 (ICME 2008), 21-23 Mei 2008, Johor Bahru, Johor, Malaysia.

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Abstract

A simple direct foaming and casting process using ovalbumin based aqueous slurries for fabricating alumina-zeolite ceramic foam was demonstrated. The characteristics of alumina foam were investigated through porosity, pore size, density and strength. 70 to 90 vol.% of alumina was used with zeolite of clinoptilolite type. Meanwhile, yeast was used as pore former agent in order to increase the porosity. Besides that, ovalbumin acted as a binder to bind the particles and encouraging foam formation. An increment in alumina loading has improved the porosity of ceramic foam but slightly reduced its strength. A ceramic foam with 90 vol.% of alumina showed the highest porosity 66.50% with the strength of 3.72 to 2.77 MPa. Therefore, the performance and utilization of these ceramic foams manufactured using this method may have a potential use in a range of applications including catalysis and filter.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: ceramic foam; yeast; ovalbumin; porosity; casting
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Materials Engineering and Design
Depositing User: Normajihan Abd. Rahman
Date Deposited: 28 Mar 2012 08:11
Last Modified: 28 Mar 2012 08:11
URI: http://eprints.uthm.edu.my/id/eprint/2241
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