Preventing Rust
If you get this wrong....
....it could cost you money!
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Corrosion (rust) is a process where chemical reactions take place through
the exchange of electrons. The corrosion reactions that would otherwise
naturally occur can be inhibited by preventing the exchange of electrons.
Since
there needs to be iron, water and free electrons present for rust to form,
eliminating any one of these agents will prevent rust.
One rust
prevention method is to insulate the metal from moisture and oxygen by
covering it with a protective coating such as spray-on type rustproofing
(rust proofing), undercoating or paint.
Another
method is Capacitive Coupling, used by some products, which relies on the
paint as a dielectric or barrier to the free electrons, causing the metal to
be at a lower potential difference, theoretically slowing rust formation.
Cathodic
Protection is another method used to prevent rust using one of two
technologies; either Impressed Current or Sacrificial Anode.
Click here to see:
Rust proofing Limitations
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