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Knowledge Bank

WIOPEDIA - The WIOTEC® electroplating encyclopaedia


Knowledge from A - Z

A

Adhesiveness

Corrosion protection and also resistance to mechanical damage are significantly influenced by the adhesion strength of the paint films to the substrate. Adhesion strength - as a specific property of paint film and substrate - is dominated by interfacial energetic forces. However, their range is in the ratio of atomic values, so that perfect wetting of the substrate with the coating is the prerequisite for good adhesion.

Roughening or structuring the surface of the workpiece can further increase the adhesion strength, as this increases the interface area. The type of stability and formation of the surface structures - mainly in the submicroscopic area - have an effect on the penetration of uncrosslinked coating molecules into the most filigree structures, but also on the mechanical bonding of the base material with its coating film.

Organic primers can be further improved in terms of their adhesion at the interface by diffusing molecules of binders. To evaluate the adhesion of paint films, it is common to use the peel test. This allows direct measurement of the force required to detach a given paint surface from its substrate. Simple empirical methods for making an approximate assessment of adhesion strength have existed in the relevant practice for a long time. The cross-cut test in particular has become established in this respect.

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WIOTEC® Ense GmbH & Co. KG
Auf den Geeren 9-11
59469 Ense-Höingen, Germany

WIOTEC® Arnsberg GmbH & Co. KG
Wagenbergstraße 55
59759 Arnsberg, Germany

Phone
+49 2938 97833-0
Fax
+49 2938 97833-20
E-Mail
mailwiotec

From metal to precious metal
The company WIOTEC® is your specialist for surface finishing and metalworking. In our electroplating shop, which is managed according to the latest environmental standards, we are capable of finishing both small parts and long parts of up to six meters. This makes us one of the leading and most efficient decorative surface coaters in Europe.

Our most important resource is our employees - with their commitment, competence and experience. Together with them, we work out and develop individual and tailor-made solutions for our customers. From detailed consultation and planning to purchasing, mechanical and chemical pre-treatment, professional electroplating and supplementary services - WIOTEC®'s range of services leaves nothing to be desired.

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© 2023 - WIOTEC® - ALL RIGHTS RESERVED.


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+49 2938 97833-11

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