Synthesis of cordierite by crystallization from MgO–Al2O3–SiO2 tempered glass

Physicochemical research is conducted to examine the phase formation under dynamic and static annealing of MgO–Al 2 O 3 –SiO 2 tempered glass (composition range adjacent to stoichiometric cordierite). Thirty glass compositions are examined in this system and the range is determined over which single-phase ceramic materials with the lowest possible thermal expansion coefficient are synthesized under specific crystallization conditions.