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for example the car body

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is reacting metal with phosphoric acid so that the metal surface is covered with phosphate

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for example food cans, water faucet, drinking water pipes

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coating of metal with other metals using the electrolysis method

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in steel supports for building and bridge construction

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coating the metal with zinc. if the Zn layer is scratched, Zn can still protect the iron because Zn is more easily oxidized

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for example on kitchen items, such as drying racks

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unfortunately if the plastic peels off, corrosion starts to occur.

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for example on moving parts of machines, such as car engines.

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must be applied periodically

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When oxidation occurs, the protected metal will immediately withdraw electrons from the protective metal so that oxidation will take place on the protective metal

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connecting the metal to be protected with another metal that has a very low electrode potential (usually Mg)

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For example on ships, bridges and cars

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unfortunately if the paint is scratched and peeled off then corrosion starts to set in and can spread under the still intact paint.

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PREVENT METAL FROM BEING EXPOSED TO OXYGEN IN THE AIR AND WATER DIRECTLY

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PREVENT METAL FROM BEING EXPOSED TO OXYGEN IN THE AIR AND WATER DIRECTLY

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Controlling the atmosphere so it is not humid and has lots of oxygen, for example by making the air environment free of oxygen by flowing CO2 gas.