The protective efficiency of 3-mercapto-propyl-trimethoxy-silane (PropS-SH) was evaluated towards bare and aged bronze. The wet & dry (stagnant rain) and dropping (runoff) techniques were used both for producing pre-patinated surfaces representative of real artefacts and for performing accelerated tests to verify PropS-SH protection efficiency. The surface corrosion products and the metal release were analyzed through spectroscopic techniques. The role of alloying metals in the corrosion/inhibition process was assessed through electrochemical analyses performed on bare and prefilmed alloying elements. The results showed good protective efficiency of the silane coating on bare and pre-patinated samples, both in stagnant and runoff conditions.
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Data di pubblicazione: | 2013 | |
Titolo: | Protective silane treatment for patinated bronze exposed to simulated natural environments | |
Autori: | C. Chiavari; A. Balbo; E. Bernardi; C. Martini; M.C. Bignozzi; M. Abbottoni; C. Monticelli | |
Rivista: | MATERIALS CHEMISTRY AND PHYSICS | |
Parole Chiave: | alloys; coatings; electrochemical techniques; electron microscopy; corrosion | |
Abstract: | The protective efficiency of 3-mercapto-propyl-trimethoxy-silane (PropS-SH) was evaluated towards bare and aged bronze. The wet & dry (stagnant rain) and dropping (runoff) techniques were used both for producing pre-patinated surfaces representative of real artefacts and for performing accelerated tests to verify PropS-SH protection efficiency. The surface corrosion products and the metal release were analyzed through spectroscopic techniques. The role of alloying metals in the corrosion/inhibition process was assessed through electrochemical analyses performed on bare and prefilmed alloying elements. The results showed good protective efficiency of the silane coating on bare and pre-patinated samples, both in stagnant and runoff conditions. | |
Digital Object Identifier (DOI): | 10.1016/j.matchemphys.2013.05.050 | |
Handle: | http://hdl.handle.net/11392/1818100 | |
Appare nelle tipologie: | 03.1 Articolo su rivista |