Figure 11From: The sulfidation process of sterling silver in different corrosive environments: impact of the process on the surface films formed and consequences for the conservation-restoration communitySEM images of the evolution of the tarnish layer over time after 3 min (a), 9 min (b), 60 min (c) and 300 min (d). (Images CEST, Wr.Neustadt).Back to article page