The rusting process only occurs in objects that contain the element iron. Iron-containing objects can be made to resist rusting using a process called galvanizing. During this process, the iron object is dipped into molten zinc, forming a thin protective layer of zinc oxide. The extent and length of time that the iron is protected depends upon the thickness of the zinc oxide coating and on the environment that the object is stored in. Although other types of metal corrode, "rusting" is a term that is only used for the corrosion of iron. Examples of metals that do not corrode easily include platinum and gold.

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