کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1695874 | 1011878 | 2010 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis and characterization of cordierite ceramic from Moroccan stevensite and andalusite Synthesis and characterization of cordierite ceramic from Moroccan stevensite and andalusite](/preview/png/1695874.png)
Cordierite (2MgO−2Al2O3− 5SiO2) is currently an attractive ceramic material for various applications. This study describes the production of cordierite ceramic by mixing Moroccan abundant raw materials: andalusite (source of Al2O3 and SiO2) and “Ghassoul” clay (source of MgO and SiO2). The clay consists mainly of stevensite. The mixtures (size < 40 μm) were sintered at 1150, 1250 and 1350 °C for 2 h. The phases formed and structural changes by sintering were investigated by X-ray diffraction (XRD), differential thermal analysis (DTA), thermal dilatometry and scanning electron microscopy (SEM).Cordierite and andalusite were the major phases in samples sintered at 1150 °C and 1250 °C. Small amounts of enstatite, mullite and cristobalite were also observed. At 1350 °C, only cordierite was observed. The exothermic peak of the DTA curve at about 1350 °C corresponded to the solid-state formation of cordierite.
Journal: Applied Clay Science - Volume 49, Issue 3, July 2010, Pages 336–340