Activity of titanium in Fe-Cr melts

The activity of titanium in Fe-Cr melts was measured using a galvanic cell technique. By measuring the activity of oxygen in equilibrium with the molten metal and solid titanium oxide, in conjunction with the analysis of the samples for titanium, the activity coefficient of Ti was measured at 1873 K. Oxygen cells, comprised of a thoria-yttria electrolyte with a Cr-Cr^sub 2^O^sub 3^ reference electrode and an Al^sub 2^O^sub 3^ (ZrO^sub 2^)-Mo cermet tipped molybdenum lead wire, were used to take the electromotive force (EMF) measurements. The measured values of γ^sup o^^sub Ti^ and e^sup Cr^^sub Ti^ were 0.018 and 0.1032, respectively. [PUBLICATION ABSTRACT]