Using a mullite electrolyte having a Cr-Cr2O3 reference mixture, the silicon activities in liquid Fe-Si and carbon-saturated Fe-Si alloys containing 0.009 approx. 1 mass percent Si were measured at temperatures ranging from 1,673 approx. 1,823 K. The silicon activities in Fe-Si alloys in equilibrium with a SiO2 saturated crucible, determined using a mullite probe, agreed with those calculated from the oxygen activities measured by a ZrO2-plug type probe. The silicon activities in carbon-saturated Fe-Si alloys, determined using a mullite probe, agreed with those from the analyzed silicon contents. Polarization due to electro-chemical oxygen transport was observed in a mullite probe having a Mo-MoO2 reference mixture. The SiO2 activities in mullite electrolytes with stoichiometric composition and with an excess of Al2O3 were determined.
|Number of pages||7|
|Journal||Iron and Steelmaker (I and SM)|
|Publication status||Published - 1995 Apr 1|
ASJC Scopus subject areas
- Metals and Alloys