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Tuesday, 26 September 2017
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Raw materials & technologies

Cerium tartrate as pigment in epoxy coatings for corrosion protection

Tuesday, 4 April 2017

A new inhibitor pigment, cerium tartrate, was studied as a pigment in epoxy coatings on aluminium alloy.

Cerium tartrate as pigment in epoxy coatings for corrosion protection on AA 2024-T3. Source: pixabay.com/CCO

Cerium tartrate as pigment in epoxy coatings for corrosion protection on AA 2024-T3. Source: pixabay.com/CCO

The results of release measurements of Ce ions from epoxy coating in 0.05 mol/L NaCl indicate that cerium ions are able to transport through the epoxy coating, which is a key characteristic of inhibitor pigment.

Improving the barrier effect

The electrochemical impedance spectroscopy (EIS) shows that cerium tartrate is an effective pigment for improving the barrier effect of epoxy coatings on AA2024-T3. The self-healing ability of cerium tartrate in artificial defects was verified by scanning vibrating electrode technique (SVET).

The study is published in: Progress in Organic Coatings, Volume 105, April 2017, Pages 123–131

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