what are the difference types of oxide film and their effect of rate of corrosion?
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==>1.Rusting of iron A layer of reddish scale and powder of oxide (Fe3O4) is formed on the surface of iron metal.
2.A green film of basic carbonate [CuCO3 + Cu(OH)2 ] is formed on the surface of copper, when it is exposed to moist-air containing carbon dioxide.
==>CONSEQUENCES (EFFECTS) OF CORROSION: The economic and social consequences of corrosion include i) Due to formation of corrosion product over the machinery, the efficiency of the machine gets failure leads to plant shut down. ii) The products contamination or loss of products due to corrosion. iii) The corroded equipment must be replaced iv) Preventive maintenance like metallic coating or organic coating is required. v) Corrosion releases the toxic products. vi) Health (eg., from pollution due to a corrosion product or due to the escaping chemical from a corroded equipment).
==>1.Rusting of iron A layer of reddish scale and powder of oxide (Fe3O4) is formed on the surface of iron metal.
2.A green film of basic carbonate [CuCO3 + Cu(OH)2 ] is formed on the surface of copper, when it is exposed to moist-air containing carbon dioxide.
==>CONSEQUENCES (EFFECTS) OF CORROSION: The economic and social consequences of corrosion include i) Due to formation of corrosion product over the machinery, the efficiency of the machine gets failure leads to plant shut down. ii) The products contamination or loss of products due to corrosion. iii) The corroded equipment must be replaced iv) Preventive maintenance like metallic coating or organic coating is required. v) Corrosion releases the toxic products. vi) Health (eg., from pollution due to a corrosion product or due to the escaping chemical from a corroded equipment).
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