Enhanced anticorrosion performance of zinc rich epoxy coatings

A zinc-rich epoxy coating was modified by stainless steel flakes. The flakes enhanced the barrier property and the cathodic protection ability.

The coated railing of a ship at sea.
The nanomaterial-loaded epoxy coating can greatly improve the composite's anti-corrosion ability. Image source: cocoparisienne - Pixabay (symbol image).

In a recently published study, the effect of a partial replacement of spherical zinc particles by stainless steel flakes (SSF) on the corrosion protection performance of zinc-rich epoxy (ZRE) coating was studied. Salt spray test, open circuit potential, electrochemical impedance spectroscopy and potentiodynamic polarisation tests were utilized to evaluate the anticorrosion performance of the coatings.

Extended the cathodic protection duration

The results demonstrate that a partial replacement of zinc particles by SSF enhanced the anticorrosion properties of the ZRE coating, and the enhancement was attributed to the synergistic effects by increasing the coating impedance and extending the cathodic protection duration.

The study has been published in Progress in Organic Coatings, Volume 163, February 2022.

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