Fabrication and evaluation of Rb₂Co(H₂P₂O₇)₂·2H₂O/waterborne polyurethane nanocomposite coating for corrosion protection aspects

<p dir="ltr">Here we investigate the influence of new acidic pyrophosphate (Rb₂Co(H₂P₂O₇)₂2H₂O) (DP) incorporation in waterborne polyurethane (WBPU) coatings on the corrosion protection efficiency of WBPU coatings for carbon steel in 3.5% NaCl solution. We used potentiodynamic polarization, electrochemical frequency modulation (EFM) and pull-off adhesion and O₂ gas permeability measurements to measure the corrosion protection efficiency of the WBPU coating. The dispersion of the DP nano-particles into the WBPU matrix was characterized via TEM observations. We find that the corrosion resistance and mechanical properties of the WBPU coating increase with incorporation of DP nano-particles into the WBPU coating.</p><h2>Other Information</h2><p dir="ltr">Published in: RSC Advances<br>License: <a href="http://creativecommons.org/licenses/by/3.0/" rel="noreferrer noopener" target="_blank">http://creativecommons.org/licenses/by/3.0/</a><br>See article on publisher's website: <a href="https://doi.org/10.1039/c7ra11212b" target="_blank">https://doi.org/10.1039/c7ra11212b</a></p>