Sintering of anorthite based ceramics prepared from kaolin DD2 and calcite
| Autor: | S. Zaiou, A. Harabi, E. Harabi, A. Guechi, N. Karboua, M.-T. Benhassine, S. Zouai, F. Guerfa |
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| Jazyk: | English<br />Portuguese |
| Předmět: | |
| Zdroj: | Cerâmica, Vol 62, Iss 364, Pp 317-322 |
| Druh dokumentu: | article |
| ISSN: | 1678-4553 0366-6913 |
| DOI: | 10.1590/0366-69132016623642015 |
| Popis: | Abstract In this work, the preparation of anorthite based ceramics using a modified milling system and 80 wt% kaolin (DD2 type) and 20 wt% calcium oxide extracted from CaCO3 is shown. The choice of these raw materials was dictated by their natural abundance. Previous studies have shown that a simple and vibratory multidirectional milling system using a bimodal distribution of highly resistant ceramics can be successfully used for obtaining fine powders. The prepared samples were sintered at different temperatures ranging between 800 and 1100 °C. It has been found that the relative density of samples sintered at 900 °C for 1 h with a heating rate of 5 °C/min was about 96% of the theoretical density of anorthite (2.75 g/cm3). Finally, the prepared samples were also characterized by scanning electron microscopy, X-ray diffraction and Raman spectroscopy. |
| Databáze: | Directory of Open Access Journals |
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