Electrochemical impedance study of environmentally friendly pigments in organic coatings

F. Deflorian, I. Felhősi

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The replacement of chromate-based pretreatments and anticorrosive pigments with environmentally compatible coating systems, particularly in the coil industry, is necessary, and many studies are being devoted to this effort. A relatively new class of inhibitive pigments is the ion-exchange pigments. Commercially available ion-exchange pigments based on calcium-exchanged silica gel are applied in coatings technology. The inhibition mechanism is related to the ion-exchange reaction and the deposition of a protective layer, but the mechanism is not yet completely known. The aim of the present study was an electrochemical evaluation of corrosion protection performance of environmentally friendly coating systems, whose primer consists of polyphosphate and ion-exchanger-based anticorrosive pigments. The results proved that electrochemical techniques, like electrochemical impedance spectroscopy (EIS), are useful to characterize and understand the corrosion protection mechanism and efficiency of organic coatings containing active pigments, as ion-exchange pigments, because the protection mechanism is based on an electrochemical action. Moreover, it was shown that in the coatings the pigments have a significant inhibitive effect and they act as cathodic inhibitors.

Original languageEnglish
Pages (from-to)112-120
Number of pages9
JournalCorrosion
Volume59
Issue number2
Publication statusPublished - Feb 2003

Fingerprint

Organic coatings
Pigments
Ion exchange
Coatings
Corrosion protection
Chromates
Polyphosphates
Ion exchangers
Silica Gel
Silica gel
Electrochemical impedance spectroscopy
Calcium

Keywords

  • Impedance
  • Inorganic inhibitors
  • Organic coatings

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

Cite this

Electrochemical impedance study of environmentally friendly pigments in organic coatings. / Deflorian, F.; Felhősi, I.

In: Corrosion, Vol. 59, No. 2, 02.2003, p. 112-120.

Research output: Contribution to journalArticle

@article{45106a7ddab14df2946f30eb1b9fe4d0,
title = "Electrochemical impedance study of environmentally friendly pigments in organic coatings",
abstract = "The replacement of chromate-based pretreatments and anticorrosive pigments with environmentally compatible coating systems, particularly in the coil industry, is necessary, and many studies are being devoted to this effort. A relatively new class of inhibitive pigments is the ion-exchange pigments. Commercially available ion-exchange pigments based on calcium-exchanged silica gel are applied in coatings technology. The inhibition mechanism is related to the ion-exchange reaction and the deposition of a protective layer, but the mechanism is not yet completely known. The aim of the present study was an electrochemical evaluation of corrosion protection performance of environmentally friendly coating systems, whose primer consists of polyphosphate and ion-exchanger-based anticorrosive pigments. The results proved that electrochemical techniques, like electrochemical impedance spectroscopy (EIS), are useful to characterize and understand the corrosion protection mechanism and efficiency of organic coatings containing active pigments, as ion-exchange pigments, because the protection mechanism is based on an electrochemical action. Moreover, it was shown that in the coatings the pigments have a significant inhibitive effect and they act as cathodic inhibitors.",
keywords = "Impedance, Inorganic inhibitors, Organic coatings",
author = "F. Deflorian and I. Felhősi",
year = "2003",
month = "2",
language = "English",
volume = "59",
pages = "112--120",
journal = "Corrosion",
issn = "0010-9312",
publisher = "National Association of Corrosion Engineers",
number = "2",

}

TY - JOUR

T1 - Electrochemical impedance study of environmentally friendly pigments in organic coatings

AU - Deflorian, F.

AU - Felhősi, I.

PY - 2003/2

Y1 - 2003/2

N2 - The replacement of chromate-based pretreatments and anticorrosive pigments with environmentally compatible coating systems, particularly in the coil industry, is necessary, and many studies are being devoted to this effort. A relatively new class of inhibitive pigments is the ion-exchange pigments. Commercially available ion-exchange pigments based on calcium-exchanged silica gel are applied in coatings technology. The inhibition mechanism is related to the ion-exchange reaction and the deposition of a protective layer, but the mechanism is not yet completely known. The aim of the present study was an electrochemical evaluation of corrosion protection performance of environmentally friendly coating systems, whose primer consists of polyphosphate and ion-exchanger-based anticorrosive pigments. The results proved that electrochemical techniques, like electrochemical impedance spectroscopy (EIS), are useful to characterize and understand the corrosion protection mechanism and efficiency of organic coatings containing active pigments, as ion-exchange pigments, because the protection mechanism is based on an electrochemical action. Moreover, it was shown that in the coatings the pigments have a significant inhibitive effect and they act as cathodic inhibitors.

AB - The replacement of chromate-based pretreatments and anticorrosive pigments with environmentally compatible coating systems, particularly in the coil industry, is necessary, and many studies are being devoted to this effort. A relatively new class of inhibitive pigments is the ion-exchange pigments. Commercially available ion-exchange pigments based on calcium-exchanged silica gel are applied in coatings technology. The inhibition mechanism is related to the ion-exchange reaction and the deposition of a protective layer, but the mechanism is not yet completely known. The aim of the present study was an electrochemical evaluation of corrosion protection performance of environmentally friendly coating systems, whose primer consists of polyphosphate and ion-exchanger-based anticorrosive pigments. The results proved that electrochemical techniques, like electrochemical impedance spectroscopy (EIS), are useful to characterize and understand the corrosion protection mechanism and efficiency of organic coatings containing active pigments, as ion-exchange pigments, because the protection mechanism is based on an electrochemical action. Moreover, it was shown that in the coatings the pigments have a significant inhibitive effect and they act as cathodic inhibitors.

KW - Impedance

KW - Inorganic inhibitors

KW - Organic coatings

UR - http://www.scopus.com/inward/record.url?scp=0037298785&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037298785&partnerID=8YFLogxK

M3 - Article

VL - 59

SP - 112

EP - 120

JO - Corrosion

JF - Corrosion

SN - 0010-9312

IS - 2

ER -