Fig. 4From: Atmospheric corrosion in the metal pool of Ali Qapu palace in Isfahan: an experimental studyLow-magnification stereomicroscopic images from the surface details of the metal sheets, magnification 10x; a) the black-brown smooth patina; b) the metallic constituent visible in the inscription parts; c) the mass of contaminations; d) the green corrosion layer and a large crack in the structure of one metal sheet. Back to article page