Silicon bronze is widely used for monuments: corrosion of Cu-3Si-1Mn was studied with respect to Cu-5Sn-5Zn-5Pb during ageing tests (runoff/full immersion) in acid rain. Surface characterisation (FEG-SEM/EDS elaborated through PCA, TEM, Raman, FTIR, profilometry), metal release and EIS measurements were performed. Under runoff conditions, where mechanical action plays a role, the alloys showed comparable corrosion resistance. In full immersion the corrosion rate of Cu-3Si-1Mn was slightly higher than that of Cu-5Sn-5Zn-5Pb, due to the different nature of the corrosion products. Results showed that, compared to Sn oxide/hydroxide, Si tends to form less protective amorphous products, detaching from the surface.

Chiavari, C., Martini, C., Balbo, A., Monticelli, C., Velino, C., Masi, G., et al. (2022). Atmospheric corrosion of Cu-Si-Mn bronze for contemporary art under simulated runoff and continuous immersion conditions. CORROSION SCIENCE, 205, 1-15 [10.1016/j.corsci.2022.110442].

Atmospheric corrosion of Cu-Si-Mn bronze for contemporary art under simulated runoff and continuous immersion conditions

Chiavari, Cristina;Martini, Carla;Velino, Cecilia;Masi, Giulia;Bernardi, Elena
2022

Abstract

Silicon bronze is widely used for monuments: corrosion of Cu-3Si-1Mn was studied with respect to Cu-5Sn-5Zn-5Pb during ageing tests (runoff/full immersion) in acid rain. Surface characterisation (FEG-SEM/EDS elaborated through PCA, TEM, Raman, FTIR, profilometry), metal release and EIS measurements were performed. Under runoff conditions, where mechanical action plays a role, the alloys showed comparable corrosion resistance. In full immersion the corrosion rate of Cu-3Si-1Mn was slightly higher than that of Cu-5Sn-5Zn-5Pb, due to the different nature of the corrosion products. Results showed that, compared to Sn oxide/hydroxide, Si tends to form less protective amorphous products, detaching from the surface.
2022
Chiavari, C., Martini, C., Balbo, A., Monticelli, C., Velino, C., Masi, G., et al. (2022). Atmospheric corrosion of Cu-Si-Mn bronze for contemporary art under simulated runoff and continuous immersion conditions. CORROSION SCIENCE, 205, 1-15 [10.1016/j.corsci.2022.110442].
Chiavari, Cristina; Martini, Carla; Balbo, Andrea; Monticelli, Cecilia; Velino, Cecilia; Masi, Giulia; Bernardi, Elena
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/889855
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