Abstract

The formation of rusts consisted mainly of malachite on bronze was simulated with a new process, by which the corrosion test of bronze samples was performed in controllable environ- ments with excess of CO2 contents, water vapor and chlorine ions. The chemical composition, mi- crostructure and phase constituents of the corrosion products were characterized by means of opti- cal microscopy, scanning electron microscope (SEM) with energy dispersive spectrometer (EDS), X-ray diffraction (XRD), and Raman microscopy. The results revealed that the characteristics of corrosion products were related with the content of CO2 and H2O in the environment. The growth mechanism of the rusts in these environments was discussed and the suggestions for preservation of the ancient bronzes were proposed.

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