Effects of Al2O3 Composition on the Physical Properties of Al2O3 Foam Prepared by Foam Replication Method

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2021 by IJETT Journal
Volume-69 Issue-1
Year of Publication : 2021
Authors : Joko Sedyono, Muhd Rizuan Rusli, Fazimah Mat Noor, Azzura Ismail
DOI :  10.14445/22315381/IJETT-V69I1P227


MLA Style: Joko Sedyono, Muhd Rizuan Rusli, Fazimah Mat Noor, Azzura Ismail. "Effects of Al2O3 Composition on the Physical Properties of Al2O3 Foam Prepared by Foam Replication Method" International Journal of Engineering Trends and Technology 69.1(2021):179-184.

APA Style:Joko Sedyono, Muhd Rizuan Rusli, Fazimah Mat Noor, Azzura Ismail. Effects of Al2O3 Composition on the Physical Properties of Al2O3 Foam Prepared by Foam Replication Method  International Journal of Engineering Trends and Technology, 69(1), 179-184.

Ceramic foams can be classified as lightweight materials with low densities, a unique combination of physical and mechanical properties, energy absorption, high porosity, and good thermal conductivity. Alumina Oxide (Al2O3) is one of the ceramic materials suitable for fabricating ceramic foam based on the characteristics mentioned above. In this study, the Al2O3 foam was produced from the foam replication method. The Polyurethane (PU) foam was used as the template dipped into the Al2O3 slurry, followed by drying and sintering to yield a replica of the original polymeric foam. This study`s focus was to produce high pores on the Al2O3 foam with different compositions of Al2O3 powder weight percentage (wt%), which were 40wt%, 50wt%, 60wt%, and 70wt%. Next, the suitable solvent used for the Al2O3 slurry needs to be determined either Distilled water or Ethanol. Physical properties of the Al2O3 foam, such as density and porosity, were characterized using Archimedes Method with ASTM B962-15 standard. Shrinkage analysis was done to determine the foams’ shrinkage before and after the sintering process. The microstructure analysis has been made to observe the types of pores and the structure inside of the Al2O3 foam produced. From the result, the shrinkage analysis shows that the higher the Al2O3 composition in the slurry, the higher the shrinkage percentage found in the Al2O3 foam. Al2O3 foam that used ethanol as solvent experienced higher shrinkage compared to distilled water. For the density and porosity of the Al2O3 foam, the higher the Al2O3 composition in the slurry, the lower the density of Al2O3 foam but produced higher porosity on Al2O3 foam for both solvents. The microstructure analysis shows that more open pores found in the Al2O3 foam produced as the composition of Al2O3 increased. Distilled water was the suitable solvent used in the preparation of Al2O3 slurry.

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Alumina (Al2O3) form, density and porosity, foam replication, microstructure, solvents.