Created with Sketch.

2. Sep 2021 | Application Areas

The effect of zinc cations addition to acid pretreatment solution

A new work focuses on the effect of zinc cations on acidic surface treatment of mild steel and shows that they reduce oxidation and corrosion attacks.
Tests on the surface of pretreated samples evidenced that zinc cations reduced the oxidation and corrosion attacks on the steel surface.
Image source: blende11photo - stock.adobe.com (symbol image).

Surface pretreatment is a key influential parameter on the protective function of silane coatings. The present study considers examining the effect of zinc cations addition to acid pretreatment solution on subsequent silane coating corrosion protection on mild steel. The electrochemical properties of subsequent silane coating on pretreated plates were assessed by electrochemical impedance spectroscopy and polarisation measurements. The polarisation resistance increased approximately two times in the presence of 3 g·L−1 zinc cations, which agreed with electrochemical impedance spectroscopy data.

Reduced oxidation and corrosion

Energy-dispersive X-ray spectroscopy (EDS) detected 3.13 wt% Zn on the zinc cation-pretreated substrate. Field emission scanning electron microscopy revealed surface morphological changes of pretreated samples in the presence of zinc cations. Further tests on the surface of pretreated samples evidenced that zinc cations reduced the oxidation and corrosion attacks on the steel surface.

The study has been published in Progress in Organic Coatings, Volume 158, September 2021.

EC Library Anticorrosive Coatings

Books

Anticorrosive Coatings

This book brings together all the disciplines involved in the creation and use of corrosion protection coatings for metals. It presents the latest insights into the quality and chemistry of surfaces, the proper way to prepare them by conversion treatment, the function of resins and anticorrosion pigments in paints, and novel concepts in corrosion protection. As an added bonus, all the standards and directives mentioned in the text are grouped together in their own chapter for a better overview.

This could also be interesting for you!

0 Comments

You are currently not logged in

To leave a comment, please log in.

Login
For continuously improving and optimizing our websites, we use cookies. By using our website, you agree to the usage of cookies. For more information, please visit our Privacy policy.
Accept