1984 Volume 25 Issue 3 Pages 197-204
In order to understand the temperature and composition dependence of the interdiffusivity of CaO–FeO in the liquid CaO–FeO–SiO2 slag in equilibrium with solid iron, electrochemical measurements have been carried out at 1573 to 1673 K. The experimental technique was the chronopotentiometry at constant currents supplied to the following cell:
solid Fe/liquid CaO–FeO–SiO2/soid Fe.
The results at a constant FeO mole fraction of 0.26 are expressed as follows;
(Remark: Graphics omitted.)
and
(Remark: Graphics omitted.)
where B is the molar ratio, CaO/SiO2. These results are compared with the values estimated from tracer diffusivities, DCa and DFe.
