“…The mullite is perhaps one of the most important stages in both the traditional and advanced ceramics (Schneider et al 2008;Juettner et al 2007;Sola et al 2006;Mazdiyasni et al, 1983). The exceptional scientific and technical importance of mullite can be explained on the basis of their characteristics, to be a stable crystalline phase from room temperature up to about 1880 C at atmospheric pressure (Mileiko et al 2009;Esharghawi et al 2009;Schneider et al, 2008, Skoog et al, 1988, have in their properties the main reason for your application, such as low thermal expansion (20 / 200 C = 4 x 10 -6 K -1 ), low conductivity thermal (k = 2.0 Wm -1 K -1 ), low density (3.17 g/cm 3 ), low dielectric constant ( = 6.5 at 1 MHz), excellent wear resistance and high resistance at temperatures suitable for use (Esharghawi et al 2009;Schneider & Komarneni, 2005;Schneider, 1994;Meng et al 1983;Bartscher et al 1999;Viswabaskaran et al, 2003), and the fact that the raw materials for its production (eg alumina, silica, aluminum silicates, sheet silicates rich in Al 2 O 3 , clays, etc.)…”