Characterization of Alumina Foam from Casting Process
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 o...
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| 格式: | Book Section |
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Faculty of Mechanical & Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), Malaysia
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| 在线阅读: | http://eprints.uthm.edu.my/594/ http://eprints.uthm.edu.my/594/1/Characterization_of_Alumina_Foam_from_Casting_Process.pdf |
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| 总结: | 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. |
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