Effect of mechanical activation on mullite formation in kaolinite system

In this study examined the formation of mullite at the kaolen system under the influence of mechanical activision. Kaolen was mechanically activated one hour and two hours in the planetary mill.Mechanically activated and not activated powders were analyzed in different heating speeds ( 5-10-15 and 20°C/m) with DTA examined the phase transformation of mullit.Mechanically activated and not activated powders were sintered 1 hour in different heats (900, 1000, 1100, 1200, 1250, 1300 and 1350°C) and analyzed the phase formation of mullite with X-Ray difraction analysis.Mechanic activision treatment was decrease the mullite formation temperature and increase the mullit formation amount.