‘Smart’ corrosion inhibiting coatings

‘Smart’ corrosion inhibiting coatings

Under certain conditions, the driving force of corrosion produces protective oxide films, a process typically referred to as passivity. In cases where passivity is difficult to achieve, for example, for Al alloys in neutral NaCl solutions, it is conceivable that a ‘smart’ coating can be micro- or na...

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Veröffentlicht in:Progress in organic coatings 2003-09, Vol.47 (3), p.183-189
Hauptverfasser: Kendig, Martin, Hon, Melitta, Warren, Leslie
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Coatings. Paints, varnishes and inks
Exact sciences and technology
Manufacturing
Oxygen reduction reaction
Polyaniline films
Polymer industry, paints, wood
‘Smart’ coating
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container_issue 3
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container_title Progress in organic coatings
container_volume 47
creator Kendig, Martin
Hon, Melitta
Warren, Leslie
description Under certain conditions, the driving force of corrosion produces protective oxide films, a process typically referred to as passivity. In cases where passivity is difficult to achieve, for example, for Al alloys in neutral NaCl solutions, it is conceivable that a ‘smart’ coating can be micro- or nano-engineered to use the energy of the corrosion to generate ‘on demand’ a corrosion inhibitor for stopping or slowing corrosion at defects. Work at Rockwell Scientific provides evidence that anionic inhibitors for the oxygen reduction reaction (ORR), when used as dopants for conducting polyaniline (PANI) films, inhibit corrosion of a Al 2024-T3 substrate at a scribe. In effect, the scribe polarizes the PANI causing it to release the inhibitor.
doi_str_mv 10.1016/S0300-9440(03)00137-1
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subjects Applied sciences
Coatings. Paints, varnishes and inks
Exact sciences and technology
Manufacturing
Oxygen reduction reaction
Polyaniline films
Polymer industry, paints, wood
‘Smart’ coating
title ‘Smart’ corrosion inhibiting coatings
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