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Rectorite,Talc and alumina were used to obtain high-quality cordierite with stoichiometric composition (51.3 wt% SiO_2,34.9 wt% Al_2O_3,13.8 wt% Al_2O_3).The water absorption,apparent porosity,bulk density,thermal expansion coefficient,crystalline phases and microstructure were tested by means of X-ray diffractometer(XRD),scanning electronic microscopy(SEM),Archimedes immersion technique,etc.This work systematically studied the synthesizing process of the cordierite.The result shows that the cordierite can be synthesized at a lower temperature and within a wider temperature range by using the rectorite as clay raw materials.
Rectorite, Talc and alumina were used to obtain high-quality cordierite with stoichiometric composition (51.3 wt% SiO 2, 34.9 wt% Al 2 O 3, 13.8 wt% Al 2 O 3). Water absorption, apparent porosity, bulk density, thermal expansion coefficient, crystalline phases and Microstructure were tested by means of X-ray diffractometer (XRD), scanning electronic microscopy (SEM), Archimedes immersion technique, etc. This work systematically studied the synthesizing process of the cordierite. The result shows that the cordierite can be synthesized at a lower temperature and within a wider temperature range by using the rectorite as clay raw materials.