Evaluation of corrosion resistance of powder coatings after various surface chemical pre-treatment

The surface treatment by a powder coating is one of the progressive technologies. Such coatings are resistant to corrosion and mechanical wearing. The quality of surface protection is affected primarily by a layer pre-treatment, the type of surface tretment, the system selection and the method and q...

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Bibliographic Details
Published in:Korose a ochrana materiálu 2017-01, Vol.61 (2), p.80
Main Authors: Draganovská, D, Brezinová, J
Format: Article
Language:cze ; eng ; ger
Subjects:
Powder coating
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Summary:The surface treatment by a powder coating is one of the progressive technologies. Such coatings are resistant to corrosion and mechanical wearing. The quality of surface protection is affected primarily by a layer pre-treatment, the type of surface tretment, the system selection and the method and quality of application. Taking into account all the surface pre-tretment methods, the chemical pre-modification is a leading method. One of the methods is pre-treatment using a conversion coating which was developed on the nanotechnology basis - BONDRITE NT. That non-phosphate chemical pre-treatment is utilized at a surrounding temperature. It creates nano-ceramic protective layer on steel, zinc and aluminium surfaces, and as the result the coating has a significant adhesion. In the paper, the possibilities for the improvement of corrosion resistance of powder coatings using the subject conversion coating are presented at the current pasivation of respective surface.
ISSN:0452-599X
1804-1213
DOI:10.1515/kom-2017-0008