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Abstract
Copper is basically a corrosion resistant metal in a wide variety of environments and many copper alloys are available to make possible the selection of mechanical properties and corrosion resistance appropriate to many industrial applications. Some more recent methods of enhancing the corrosion resistance of copper metals are described, including the use of corrosion inhibitors such as benzotriazole, and the protection of copper alloy condenser tubes by iron corrosion products.
Cathodic protection techniqueseither with impressed current or with the use of aluminium anodes are effective in preventing the corrosion of copper domestic water cylinders in areas having particularly aggressive water supplies. The possibilities of water treatment are also discussed.
Finally, the resistance of copper to atmospheric corrosion is described with particular reference to the development of artificial patination processes as well as the maintenance of the original surface appearance through the use of protective lacquers.