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Topic: Prevention of rusting  (Read 3515 times)

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dpsguy

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Prevention of rusting
« on: September 07, 2005, 06:37:38 AM »
 :-\I know that MgCl2 is delinquescent,i.e. it absorbs water from the air .So why can't we use a coating of MgCl2 on iron objects to prevent rusting,as water is essential for it?Is there something wrong here? Or is this method already in use?
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Offline xiankai

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Re:Prevention of rusting
« Reply #1 on: September 07, 2005, 06:57:42 AM »
i dont see how u could coat MgCl2 on the iron.
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Offline Borek

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Re:Prevention of rusting
« Reply #2 on: September 07, 2005, 08:07:19 AM »
It will not work.

MgCl2 is highly hygroscopic which means that it will soon get wet - and dissociated. That will speed up the corrosion instead of slowing it.
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