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Do vacuum vessels have issues with the interior layers flaking off?

  1. May 1, 2014 #1
    I've heard of issues in low pressure chemical reactors where the interior scaling might flake off when a vacuum is pulled.

    Which principles govern this?

    I know it has to do with internal shear forces and am wondering if a vessel wall would ever split in half.

    I saw this related thread on quora but there isn't a good answer.

  2. jcsd
  3. May 1, 2014 #2
    Just my first thought...

    If you have a layer that is coating the inside you may have outgassing under that layer due to the lack of pressure. This could instigate or perpetuate flaking.
  4. May 1, 2014 #3


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    The maximum differential pressure on vacuum vessels is only One Atmosphere (unless you go deep under water) and that will not cause much distortion - the vessel design should limit such distortions to an acceptable amount.. Consequently, I wouldn't imagine that flaking would be a problem as long as the inside is already clean and free of contaminants (as it should be).
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