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Rust flakes away from metal because its a layer of loose material. The metal underneath is no longer protected and will begin to rust also.

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Q: Why does rust flake away from metal?
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How do you repair flaking rusting anodized metal?

It can't be anodized if it's flaking and rusting - the chemicals used to anodize metal will destroy the metals - steel and iron - that flake and rust.


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How does oiling of metals prevent rusting?

The oily layer prevents water and air from reaching the metal's surface and causing the metal to rust.


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Is rust a type of fungus?

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Why don't cars rust while they are sitting out in the parking lot?

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