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GCSE - Chemistry > c6.1.12 reducing corrosion > Flashcards

c6.1.12 reducing corrosion Flashcards

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1
Q

physical barriers

A

painting

coating with oil/ grease/ plastic

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2
Q

chemical protection

A

sacrificial protection

metal plating

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3
Q

sacrificial protection

A

Putting something like a metal that is MORE REACTIVE than iron (ex. magnesium and zinc)
These will corrode first

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4
Q

galvanising

A

covering with a layer of molten zinc

acts a physical barrier and then sacrificial metal

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5
Q

tin plating

A

covering with a layer of tin
tin is less reactive than iron
but if the tin is scratched off, then the steel acts as a sacrificial metal, but it rusts even faster

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GCSE - Chemistry (33 decks)

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