Indoor corrosion of silver components used in electronic industry

摘要

The indoor corrosion of silver components used in the manufacturing of electronic devices represents a hard challenge for the electronic industry in Mexico. In this work, two different silver corrosion cases were documented, analysed and diagnosed. The main pollutant present in the indoor environment of the factories was hydrogen sulphide, which causes rapid silver tarnishing due to the formation of silver sulphide corrosion products. Silver corrosion rates were evaluated by gravimetric assays and surface SEM and EDX analyses were performed to characterize the corrosion film.