ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Phase Equilibria for the MnO-SiO2-Ti2O3 System
Hiroshige AmitaniKazuki MoritaNobuo Sano
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1996 Volume 36 Issue Suppl Pages S26-S29

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Abstract

Isothermal phase relations for the MnO-SiO2-Ti2O3 system were investigated at 1 773 and 1 573 K by a chemical equilibration technique. The solubility of Ti2O3 was found to be 30 to 40 mass% and 20 to 33 mass%, respectively. In the MnO-Ti2O3 binary system, the existence of 2MnO·TiOx was confirmed by X-ray diffraction. Isothermal phase relations for the MnO-SiO2-TiO2 system were also investigated at 1 773 K, as was the dependence of the SiO2-TiO2 doubly saturated composition in the MnO-SiO2-TiO2 system on temperature from 1 573 to 1 773 K. The dependence of Ti4+/Ti3+ ratio in 2MnO·TiOx on oxygen partial pressure (PO2=3.37×10-18 to 1.94×10-13 atm) is discussed.

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