Tadeja Kosec, Polonca Ropret and Andraž Legat Raman investigation of artificial patinas on recent bronze‒part II: urban rain exposure Journal of Raman Spectroscopy 43
Green chloride and green nitrate patinas, applied over the brown artist's patina, were tested, as well as the brown patina and the patina that develops on bare bronze. Chemical patinas were characterized after exposure to simulated urban rain for 35 days. After the exposure, the corrosion products changed. The end products of each patina type are given.
In the figure, the corrosion products on green chloride patina on bronze after exposure to simulated urban rain are presented. The presence of brochantite/langite and atacamite are confirmed.
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