Corrosion characteristic of Ce Al brass in comparison with As Al brass

An Al brass alloy with Ce addition has been developed with an aim to replace the As Al brass, because the latter poses health and environmental problems. The corrosion behavior of the two alloys in NaCl (35 g/L) and NaCl (35 g/L) + NH4Cl (26.75 g/L) solutions has been investigated. The morphology and compositional changes in the alloys have been studied. In both solutions, the corrosion rates of the Ce Al brass are very similar to those of As Al brass. Ce is a suitable alternative to As as an alloying element in Al brass for corrosion resistance improvement.