Why galvanised iron articles remain protected from rusting even if zinc coating is broken?
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Galvanising forms a coating of corrosion-resistant zinc which prevents corrosive substances from reaching the more delicate metal.
the zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still b protected by the remaining zinc.
Galvanising forms a coating of corrosion-resistant zinc which prevents corrosive substances from reaching the more delicate metal.
the zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still b protected by the remaining zinc.
Anonymous:
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because zinc have not react with oxygen and when oxygen is not react with zinc then it is protected from rusting. ..
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