What is the process called when a thin layer of zinc is applied to iron or steel to protect against rusting and mechanical damage?

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Multiple Choice

What is the process called when a thin layer of zinc is applied to iron or steel to protect against rusting and mechanical damage?

Explanation:
Galvanizing involves applying a zinc coating to iron or steel to protect against rust and mechanical damage. The zinc layer acts as a barrier to moisture and air, and it also serves as a sacrificial anode that corrodes in preference to the steel, so even if the coating is scratched, the metal underneath stays protected. It's commonly done by hot-dip galvanizing, where steel is dipped into molten zinc, though zinc can also be applied by electroplating for a thinner coating. Die casting and grinding are not coating processes for corrosion protection.

Galvanizing involves applying a zinc coating to iron or steel to protect against rust and mechanical damage. The zinc layer acts as a barrier to moisture and air, and it also serves as a sacrificial anode that corrodes in preference to the steel, so even if the coating is scratched, the metal underneath stays protected. It's commonly done by hot-dip galvanizing, where steel is dipped into molten zinc, though zinc can also be applied by electroplating for a thinner coating. Die casting and grinding are not coating processes for corrosion protection.

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