Figure 7From: 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 communitySecondary electron images of the surface of polished sterling silver after exposure to synthetic air, 90% RH and 500 ppb H2S for 24 h, followed by 90% RH and 500 ppb SO2 for another 48 h (Images CEST, Wr.Neustadt).Back to article page