Influence of annealing on properties and structure of alumina |
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Authors: | M. R. Kamel |
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Affiliation: | (1) Refractories & Building Materials Department, National Research Centre, Cairo, Egypt |
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Abstract: | Alumina bodies were prepared from pure alumina powder (98.9% Al2O3 consisting of 82% > 53m). The powder was compacted by hot-pressing at 1200° C, Compacted bodies were annealed at 1300, 1400 and 1500° C. Annealing continued at each maximum temperature for 25, 50 and 100 h. Strong bodies were obtained with maximum bulk density of 2.32 g cm–3 and minimum apparent porosity of 30.21%. The change in sintering parameters with annealing was correlated with developed structure. |
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