The OCP results shown in Fig. displayed slow trends within the melt. The first few hours had a slight increase in the magnitude of the potential of the solution with small spikes corresponding to the spikes in the metallic Ni con-centration. The second half indicated that the magnitude of the potential decreased, which was likely caused by the increase of metals within the melt. The OCP measurements captured slow variations of the bulk of the melt while the XAS quantitatively captured the corrosion products within small regions in the melt.