2015.09.28

We have earlier this summer had the pleasure of a visit from Thorfinn Harbor, Prof Dr II. ing. Materials Science / corrosion. The purpose of the visit was to obtain input to a method for safe removal of salt from the aircraft numerous joints. Here we have made a summary of the information we received in this meeting with Thorfinn Harbor

  • Corrosion in a piece of material does not have a knock-on effect against another piece of material that is undamaged and clean.

  • Salt will not create bonds with or penetrate into the material sit in plane.

    Salt will not penetrate into the aluminum. But it will be able to bind to aluminum through corrosion products on the surface.

  • Salt will penetrate the joints when a plane over time is submerged in seawater

    â??¢ style of food inadequate (often in the backgroundthe contraction complete the erection can be local: a change your life.

    . Shall be removed salt must be "driven" out. This can be done by mechanical means, Fa.aks. through the application of hot water under pressure inside the joints. Hot water increases the solubility of salt relative to the cold water, and therefore increases the removal of salt.

  • salt solved / thinned easiest by water.

    Stagnant fresh water alone will in a small degree be able to drive salt from joints.

  • Corrosion can be stopped if the salt is isolated from being able to absorb moisture from the environment.

  • One can stop corrosion by reducing the moisture content of the environment of less than 35- 40 % relative humidity.

  • Salt water heated becomes more and more aggressively to aluminum. The oxygen content in the salt water will sink, but the chemical reactions will increase so much that on the whole becomes more aggressive. This is a safe rule for temperatures up to 100 degrees C.

  • Mixing a preservative product, like for example. Lanolin with salt, could reduce the corrosion rate, but not stop corrosion. Such products will not dissolve or carry the salt from a joining. Should preservative products stop corrosion, this must be done in that they serve as a barrier between the salt and humidity in the environment. A product e.g.. Lanolin will prevent the salt from drying out and thereby crystallize.

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