Application of self-assembly for replacing chromate in corrosion protection of zinc

Aranka Pilbáth, I. Felhősi, Gyula Tolnai, E. Kálmán

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Due to the toxic and carcinogenic properties of hexavalent chromium ion, the corrosion protection with chromating technique needs replacement. Several environmentally friendly alternative metal pretreatments have already been proposed. One of these methods is the application of self-assembling molecules to form mono- or multilayers on the metal surfaces. These layers can prevent metal dissolution due to their dense and stable structure. The objective of our studies was to protect zinc surface against corrosion, with a thin phosphonate layer. Aqueous solutions of diphosphonic acid with different alkyl chain lengths were applied with different treatment times. The layer formation, stability, and corrosion protection of these films were monitored by electrochemical impedance spectroscopy and the effect of 1,5-diphosphono-pentane (DPP) on zinc was studied by polarization curves. The wetting properties were determined by static contact angle measurement. 1,5-Diphosphono-pentane forms a thin layer, with a pronounced protective ability in neutral aqueous solutions. The application of self-assembling molecules can be a promising method to replace the chromating technique on zinc surface.

Original languageEnglish
Pages (from-to)721-729
Number of pages9
JournalJournal of Solid State Electrochemistry
Volume10
Issue number9
DOIs
Publication statusPublished - Sep 2006

Fingerprint

Chromates
chromates
Corrosion protection
Self assembly
self assembly
Zinc
corrosion
zinc
Metals
pentanes
assembling
Organophosphonates
Molecules
Poisons
Angle measurement
aqueous solutions
Electrochemical impedance spectroscopy
Chain length
Contact angle
Wetting

Keywords

  • Corrosion
  • Diphosphonic acid
  • Protective layer
  • Zinc

ASJC Scopus subject areas

  • Electrochemistry
  • Electrical and Electronic Engineering
  • Chemical Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)
  • Materials Science (miscellaneous)

Cite this

Application of self-assembly for replacing chromate in corrosion protection of zinc. / Pilbáth, Aranka; Felhősi, I.; Tolnai, Gyula; Kálmán, E.

In: Journal of Solid State Electrochemistry, Vol. 10, No. 9, 09.2006, p. 721-729.

Research output: Contribution to journalArticle

@article{d36f2c34ce9b424b8ddb5d16a1922ebd,
title = "Application of self-assembly for replacing chromate in corrosion protection of zinc",
abstract = "Due to the toxic and carcinogenic properties of hexavalent chromium ion, the corrosion protection with chromating technique needs replacement. Several environmentally friendly alternative metal pretreatments have already been proposed. One of these methods is the application of self-assembling molecules to form mono- or multilayers on the metal surfaces. These layers can prevent metal dissolution due to their dense and stable structure. The objective of our studies was to protect zinc surface against corrosion, with a thin phosphonate layer. Aqueous solutions of diphosphonic acid with different alkyl chain lengths were applied with different treatment times. The layer formation, stability, and corrosion protection of these films were monitored by electrochemical impedance spectroscopy and the effect of 1,5-diphosphono-pentane (DPP) on zinc was studied by polarization curves. The wetting properties were determined by static contact angle measurement. 1,5-Diphosphono-pentane forms a thin layer, with a pronounced protective ability in neutral aqueous solutions. The application of self-assembling molecules can be a promising method to replace the chromating technique on zinc surface.",
keywords = "Corrosion, Diphosphonic acid, Protective layer, Zinc",
author = "Aranka Pilb{\'a}th and I. Felhősi and Gyula Tolnai and E. K{\'a}lm{\'a}n",
year = "2006",
month = "9",
doi = "10.1007/s10008-006-0117-z",
language = "English",
volume = "10",
pages = "721--729",
journal = "Journal of Solid State Electrochemistry",
issn = "1432-8488",
publisher = "Springer Verlag",
number = "9",

}

TY - JOUR

T1 - Application of self-assembly for replacing chromate in corrosion protection of zinc

AU - Pilbáth, Aranka

AU - Felhősi, I.

AU - Tolnai, Gyula

AU - Kálmán, E.

PY - 2006/9

Y1 - 2006/9

N2 - Due to the toxic and carcinogenic properties of hexavalent chromium ion, the corrosion protection with chromating technique needs replacement. Several environmentally friendly alternative metal pretreatments have already been proposed. One of these methods is the application of self-assembling molecules to form mono- or multilayers on the metal surfaces. These layers can prevent metal dissolution due to their dense and stable structure. The objective of our studies was to protect zinc surface against corrosion, with a thin phosphonate layer. Aqueous solutions of diphosphonic acid with different alkyl chain lengths were applied with different treatment times. The layer formation, stability, and corrosion protection of these films were monitored by electrochemical impedance spectroscopy and the effect of 1,5-diphosphono-pentane (DPP) on zinc was studied by polarization curves. The wetting properties were determined by static contact angle measurement. 1,5-Diphosphono-pentane forms a thin layer, with a pronounced protective ability in neutral aqueous solutions. The application of self-assembling molecules can be a promising method to replace the chromating technique on zinc surface.

AB - Due to the toxic and carcinogenic properties of hexavalent chromium ion, the corrosion protection with chromating technique needs replacement. Several environmentally friendly alternative metal pretreatments have already been proposed. One of these methods is the application of self-assembling molecules to form mono- or multilayers on the metal surfaces. These layers can prevent metal dissolution due to their dense and stable structure. The objective of our studies was to protect zinc surface against corrosion, with a thin phosphonate layer. Aqueous solutions of diphosphonic acid with different alkyl chain lengths were applied with different treatment times. The layer formation, stability, and corrosion protection of these films were monitored by electrochemical impedance spectroscopy and the effect of 1,5-diphosphono-pentane (DPP) on zinc was studied by polarization curves. The wetting properties were determined by static contact angle measurement. 1,5-Diphosphono-pentane forms a thin layer, with a pronounced protective ability in neutral aqueous solutions. The application of self-assembling molecules can be a promising method to replace the chromating technique on zinc surface.

KW - Corrosion

KW - Diphosphonic acid

KW - Protective layer

KW - Zinc

UR - http://www.scopus.com/inward/record.url?scp=33745464616&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33745464616&partnerID=8YFLogxK

U2 - 10.1007/s10008-006-0117-z

DO - 10.1007/s10008-006-0117-z

M3 - Article

AN - SCOPUS:33745464616

VL - 10

SP - 721

EP - 729

JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

SN - 1432-8488

IS - 9

ER -