An example of dealloying is the dezincification of brass. Dezincification occurs when brass, an alloy of copper and zinc, is exposed to corrosive environments, leading to the selective removal of zinc. This leaves behind a porous, weakened structure of copper, which can compromise the integrity and mechanical strength of the brass component. Dezincification often occurs in plumbing systems, where brass fittings are exposed to water containing chlorides or other aggressive chemicals.