Efficiency of layered double hydroxides in epoxy coating as corrosion inhibitor reservoirs for carbon steel DOI Creative Commons

G. J. Ayemi,

Camille Blivet,

Sabrina Marcelin

et al.

Applied Clay Science, Journal Year: 2024, Volume and Issue: 258, P. 107510 - 107510

Published: July 27, 2024

Layered double hydroxides (LDH) are considered as interesting containers for corrosion inhibitors, since they exhibit high ability to release inhibitor well capture aggressive ions from aqueous solution. Epoxy containing organo-modified LDH filler intercalated with ethylenediamine-N,N′-disuccinate anions (EDDS), [Zn2Al(OH)6]+ [EDDS]4−0.25 . 2H2O (LDH-EDDS) loading 0% 1.25% were coated onto carbon steel plates. The efficiency of these coatings against (barrier properties and inhibitors) was assessed by using electrochemical impedance spectroscopy. evolution the modulus |Z| at low frequency range during time showed that 0.75% LDH-containing epoxy (thickness 80 μm) exhibited highest resistance in series associated value 3 mHz (1010 Ω cm2 after 21 days immersion 0.1 mol L−1 NaCl solution) placed it among best solutions published so far cargo carrying a inhibitor. behavior this polymer composite compared free-LDH coating plotting resistivity profiles along thickness function time. These results (i) presence LDH-EDDS delayed penetration water molecules, (ii) limited steel. inhibit process explained an exchange between interleaved species occurring released EDDS4− Cl− being captured.

Language: Английский

Efficiency of layered double hydroxides in epoxy coating as corrosion inhibitor reservoirs for carbon steel DOI Creative Commons

G. J. Ayemi,

Camille Blivet,

Sabrina Marcelin

et al.

Applied Clay Science, Journal Year: 2024, Volume and Issue: 258, P. 107510 - 107510

Published: July 27, 2024

Layered double hydroxides (LDH) are considered as interesting containers for corrosion inhibitors, since they exhibit high ability to release inhibitor well capture aggressive ions from aqueous solution. Epoxy containing organo-modified LDH filler intercalated with ethylenediamine-N,N′-disuccinate anions (EDDS), [Zn2Al(OH)6]+ [EDDS]4−0.25 . 2H2O (LDH-EDDS) loading 0% 1.25% were coated onto carbon steel plates. The efficiency of these coatings against (barrier properties and inhibitors) was assessed by using electrochemical impedance spectroscopy. evolution the modulus |Z| at low frequency range during time showed that 0.75% LDH-containing epoxy (thickness 80 μm) exhibited highest resistance in series associated value 3 mHz (1010 Ω cm2 after 21 days immersion 0.1 mol L−1 NaCl solution) placed it among best solutions published so far cargo carrying a inhibitor. behavior this polymer composite compared free-LDH coating plotting resistivity profiles along thickness function time. These results (i) presence LDH-EDDS delayed penetration water molecules, (ii) limited steel. inhibit process explained an exchange between interleaved species occurring released EDDS4− Cl− being captured.

Language: Английский

Citations

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