Activities in liquid Fe-V-O and Fe-B-O alloys

摘要: The activities in liquid Fe-V-0 and Fe-B-O alloys have been determined using the following galvanic cells Cr-Cr2O3(s) | ZrO2(CaO) Fe-V-O (l, saturated with oxide) ThO2(Y2O3) B2O3 Al2O3) solubility of oxygen Fe-V at 1600°C decreases increasing vanadium content to a minimum about 180 ppm 3 wt pct V, then increases over 4000 36.3 V. Vanadium was found decrease activity coefficient value interaction eoV infinite dilution is -0.14. calculated from measured electromotive force, log γv be represented well by quadratic formalism for Nv < 0.4: γV = -0.70N2Fe -0.30 At 1550°C boron down 80 0.67 B Fe-B melts equilibrium A12O3 (NAl2 O3 0.087). deoxidation product, ’K′ (wt B)2(wt 0)3 4.4 × 10-9 1.5 10-8 1550° 1600°C, respectively. Boron iron, eoB -2.6 boron. (γ°B) 0.083 relative solid