Abstract
Kaolinite undergoes a phase and structural change on heating. In this paper we report the growth characteristics of mullite, and it's changes in structural parameters by analyzing with help of Rietveld technique. The results show that crystallization of mullite increases with increase of temperature upto 1550°C. X-ray diffraction analysis indicates mullite formation in kaolinite takes place in two steps. The crystal parameters (a, b, c), crystal size, strain change significantly during these two steps.
