The corrosion behaviour of wrought and as-cast Cu94-Sn6 (B6 and G6, respectively) bronze (whose composition is similar to bronzes for outdoor artefacts) has been investigated. Artificial weathering tests have been carried out by exposing bronze specimens to selected pollutants as NOx and SO2 at different concentrations to simulate urban and industrial environments. Furthermore, the effects of marine atmosphere and acid rains have been investigated by ASTM B117-64 tests carried out on a cyclic salt spray cabinet and by immersion tests. The aggressive action of ammonia containing depositions was investigatedby adopting (NH4)2SO4 solutions. Dta obtained with conventional techniques have been compared with those arising from TLA technique.
A corrosion study on artificially aged bronzes of artistic interest
FRIGNANI, Alessandro;GARAGNANI, Gian Luca;BRUNORO, Giancarlo
1999
Abstract
The corrosion behaviour of wrought and as-cast Cu94-Sn6 (B6 and G6, respectively) bronze (whose composition is similar to bronzes for outdoor artefacts) has been investigated. Artificial weathering tests have been carried out by exposing bronze specimens to selected pollutants as NOx and SO2 at different concentrations to simulate urban and industrial environments. Furthermore, the effects of marine atmosphere and acid rains have been investigated by ASTM B117-64 tests carried out on a cyclic salt spray cabinet and by immersion tests. The aggressive action of ammonia containing depositions was investigatedby adopting (NH4)2SO4 solutions. Dta obtained with conventional techniques have been compared with those arising from TLA technique.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
