发行时间：0001.01.01
总页数：17
编辑：
综保科技
摘要：
vits
corrosion
unit-2 corrosion and its control
corrosion
the surface of almost all the metals begin to decay more or less rapidly when exposed to atmospheric gases, water or other reactive liquid medium. the process of decay metal by environmental attack is known as corrosion. metals undergo corrosion and convert to their oxides, hydroxides, carbonates, sulphides etc. eg. iron undergoes corrosion to form reddish brown colour rust [fe2o3. 3h2o]. copper undergoes corrosion to form a gre...
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