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rust treatment
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The Natural Philosopher
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rust treatment
wrote:
On Jun 19, 10:29 am, Fred wrote:
Hello,
I know you can get a black "paint" to paint over rust, but how does it
work and is it any better than using normal gloss paint? Presumably
forming a barrier to stop water getting in is half the battle?
The one I have seen is bizarrely water based, I would have thought
water is the last thing you want to apply to rust! I know they are not
quite the same but the Ronseal and Hammerite metal paints that are
supposed to stop rust forming in the first place require a special
solvent, don't they.
Thanks.
The best rust treatments contain phosphoric acid in water. This
converts existing rust to a stable compound (iron phosphate I guess).
NT
Neither water nor air cause rust. Its both together. Or water plus some
other oxidant like whatever seawater has in it.
Eliminate either one and you are on a winner.
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