Corrosion and oxidation on a copper sheet. A copper component that has been exposed to air for some months and is showing distinct corrosion. Copper r
Corrosion and oxidation on a copper sheet. A copper component that has been exposed to air for some months and is showing distinct corrosion. Copper reacts slowly with oxygen in the atmosphere to form a layer of brownish black copper (II) oxide. This prevents further oxidation. In the presence of carbon dioxide the copper can react to form basic copper carbonate (Cu2(OH)2CO3), with a characteristic green-blue colour.
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Photo credit: © Ilan Rosen / Alamy / Afripics
License: Royalty Free
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