The stability and reactivity of glassy carbon, nickel, platinum, and tungsten in the ZnCl2-NaCl (60-40 mole percent) melt at 450 degrees C were investigated by cyclic voltammetry and constant-potential electrolysis. Glassy carbon was stable in the potential range of 0.23 to 1.8 V vs. Zn in ZnCl2-NaCl (saturated). Nickel was oxidized and partially passivated at 0.8 to 0.9 V:x-ray diffraction analysis revealed the formation of gamma-NiZn alloy at 0.20 to 0.25 V and beta(1)-NiZn alloy at 0.30 to 0.35 V. Platinum was oxidized and partially passivated at 1.7 to 1.8 V; it formed gamma-PtZn alloy at 0.20 to 0.25 V, gamma(1)-PtZn alloy at 0.30 V, and beta(1)-PtZn alloy at 0.35 to 0.40 V. The voltammetric results were consistent with the thermodynamic activity data of Ni-Zn and Pt-Zn alloys. Tungsten was oxidized at potentials above 0.7 V, but no passivation occurred. A gaseous product, presumably WCl5 or WCl6, was formed at 1.2 V.