VIII-Metals-J-Corrosion protection-1_ CORROSION PROTECTION OF METALS
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چکیده
Nearly all metals, with the exception of gold and platinum, will corrode in an oxidising environment forming compounds such as oxides, hydroxides and sulphides. The degradation of metals by corrosion is a universal reaction, caused by the simple fact that the oxide of a metal has a much lower energy than the metal itself. Hence there is a strong driving force for the oxidation of metals. For example the familiar metal aluminium, which is used in aircraft, window frames and cooking utensils, is attacked by oxygen to form the oxide as follows:
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