Analysis
From an analysis of the results after the adhesion test is clearly evident that the panels prepared in accordance to samples "A" are to be considered superior to samples marked "B" and "C".
Conclusion
It is evident from the chemico-physical tests the panels treated with Fertan always proved to be superior in preventing re-rusting when compared to samples painted after simples brushing and indeed proved in certain others tests to be superior to shotblasted panels.
This superiorit is particularly visible in hte filiform corrosion tests and it is evident that this corrosive action will be found on all metals surfaces treated with shotblasting. on th others hand Fertan will act as a passifier and therefor will offer protection to metal surfaces against rust.
It is important when reviewing the mechanical properties of the product to correctly interpret the results of the tests where it might appear that the treated panels offer inferior protection to untreated rusted panels.
In fact, Fertan forms a bond with the particles of treated rust to create a very thin organic metal film and this can give the result that under certain mechanical stress, the fertanized layer will become detatched from the surface.
Whereas untreated rust has an inferior cohesium both with itself and the metal surface and under mechanical stress the rust may only detatch on the point of impact.
Obviously such reactions can be modified by varying the type of coating used and it is in this way that one can justify the apparent disparity between the mechanical properties of a rusted film and one treated with Fertan.
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