Fig. 2From: Brass products in the coronet excavated from an M2-numbered Sui-Tang-dynasty tomb situated in Kun Lun Company in Xi'an, Shaanxia Cross-sectional BSE images of S-1 sample. b Severe corrosion area at the edge of the cross-section. c Environmentally unaffected area at the center of the cross-section. d Grayish-white agglomeration areas in the cross-section. e Bright white particles in the cross-section. f Corrosion grain boundaries in the cross-sectionBack to article page