Abstract
The magnitude of various coupling effects have been determined in molten iron and slag at high temperature by measuring Soret coefficient, thermoelectric power and interdiffusivity matrix. Soret coefficients of P, Si, Ni, and Cr in molten iron are positive except Fe-10 wt%P alloy, and their absolute values are 10-310-4 K-1. Absolute values of Soret coefficients of several solute oxides in molten CaO-SiO2-Al2O3 and Fe2O3-CaO-SiO2 slag are 10-310-4 K-1. The thermoelectric power of molten CaO-SiO2-Al2O3 slag, measured with platinum electrodes, is 0.31 mv/K and the hot side is positive. Absolute values of interdiffusivity matrix of molten Fe2O3-CaO-SiO2 slag equibriated with air are 2 ×10-64×10-7 cm2/s and their cross terms are negative. From these results, the transport coefficients, Lik have been determined for molten iron alloys and slags.
