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Interceram is SCOPUS-listed!
SCImago Journal & Country Rank

  Sadek, H. E. H. ; Khattab, R.M. ; Zawrah, Mahmoud F.
Preparation of Porous Forsterite Ceramic Using Waste Silica Fumes by the Starch Consolidation Method
Interceram 65 (2016) [4] 174-178
High-Performance Ceramics


Abstract:
The fabrication of porous forsterite samples through starch consolidation casting (SCC), utilizing waste silica fume and calcined magnesia has been performed. Three different forsterite contents of solid loading (56.5, 52 and 48 mass-%) were prepared, calculated in a stoichiometric ratio based on utilizing highly pure calcined magnesia and waste silica fume. In addition, corn starch was used as the source of pore forming that was added to the colloidal suspensions then gelatinized in water at elevated temperature (80 °C) followed by pressing and firing at 1400, 1450 and 1500 °C/2 h). The effect of corn starch content versus the fired temperatures on the physical properties, linear shrinkage, apparent pore size distribution, phase variation, microstuctural evolution and electrical resistivity as well as the cold crushing strength on the fired ceramics was investigated. Results showed that open porosity ranged from 45.5 to 80.5 % and compressive strength ranging from 38.1 to 20.2 MPa was obtained depending on starch content in precursor suspensions and firing temperatures, to develop porous forsterite ceramics having varied thermal and electrical applications.

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