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Alexander Hood 28/03/12

Rust Prevention

Rust is permeable to air and water, therefore the interior iron continues to corrode. Rust prevention
thus requires coatings that preclude rust formation. Stainless steel forms a passivation layer of
chromium(III) oxide. Similar passivation behavior occurs with magnesium, titanium, zinc, zinc oxides,
aluminium, polyaniline, and…

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Alexander Hood 28/03/12

Rusting can completely degrade iron. Note the galvanization on the unrusted portions.

Zinc plating (galvanized iron/steel): iron or steel coated with zinc metal layer. Hot-dipped method or
zinc-blasting method may be used.

Tin plating: mild steel sheet coated with a tin layer.

Chrome plating: wherein a…


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