The Ternary System Na2O-FeO-SiO2

JSGT 1952 V36 T142-T163

The thermal equilibrium diagram of the FeO–2Na₂O.SiO₂–SiO₂ portion of the Na₂O–FeO–SiO₂ system has been constructed from thermal, microscopic and x-ray data. The existence of one ternary compound, viz., Na₂O.FeO.SiO₂ has been established. This compound melts incongruently at 976°C, the wüstite formed finally going into solution at 985°C. The distribution of phases at room temperature has been established.

P. T. Garter & M. Ibrahim