抄録
Forsterite (Mg2SiO4) precursors were synthesized from heterogeneous alkoxide solution including very fine MgO powders and homogeneous alkoxide solution with Mg(NO3)2.6H2O. The precursors from M9O were crystallized to forsterite with drastically exothermic reaction at about 840°C. The precursors from Mg(NO3)2⋅6H2O consisted of Mg(NO3)2⋅6H2O and a little amorphous SiO2. The precursors began to crystallized to forsterite at a lower calcining temperature than those from MgO. However, MgO and enstatitc (MgSiO3) as second phase existed in forsterite powders even at a calcining temperature more than 10O00°C. The forsteritc powders obtained heterogeneous alkoxide solution with MgO showed excellent sinterahility.
