Solid electrolyte for the determination of sulfur in liquid iron

Abstract In order to find a sulfide solid electrolyte with high ionic conductivity, the electrical conductivities of CaS-based solid sulfides at 800–1400°C were measured. From the dependence of the conductivity on sulfur partial pressure, the ionic conduction of these sulfides was evaluated. CaS containing TiS 2 was found to have high ionic conductivity. Also, sulfur determination in liquid carbon-saturated iron by emf measurement using a CaS-TiS 2 solid electrolyte is reported.