Published June 2008 | Version v1
Journal article Metadata-only

Corrosion protection properties of hydroxamic acid self-assembled monolayer on carbon steel

Creators

  • 1. Chemical Research Centre of the Hungarian Academy of Science, Department of Surface Modification and Nanostructures, Pusztaszeri ut 59-67, H-1025 Budapest (Hungary)
  • 2. Chemical Research Centre of the Hungarian Academy of Science, Institute of Materials and Environmental Chemistry, Pusztaszeri ut 59-67, H-1025 Budapest (Hungary)

Description

Self assembled monolayers (SAMs) of hydroxamic acids CH3(CH2)nCONHOH with different alkyl length were formed on the carbon steel electrode surface. The corrosion protection properties of the monolayers were examined and characterized by electrochemical polarization curves, electrochemical impedance spectroscopy, X-ray photoelectron spectroscopy (XPS) and contact angle measurements. XPS results showed that the hydroxamic acid molecules adsorbed on the carbon steel surface, and the contact angle values on the modified surface supported the formation of hydrophobic hydroxamic acid SAMs. The results of electrochemical studies showed that the values of the corrosion potential shift towards the positive direction, and anodic currents of the carbon steel dissolution significantly decreases, indicating that hydroxamic acids are anodic inhibitors. However, the chain length and assembling time influence the protection efficiency

Availability note (English)

Available from http://dx.doi.org/10.1016/j.corsci.2008.02.008

Additional details

Identifiers

DOI
10.1016/j.corsci.2008.02.008;
PII
S0010-938X(08)00074-7;

Publishing Information

Journal Title
Corrosion Science
Journal Volume
50
Journal Issue
6
Journal Page Range
p. 1644-1649
ISSN
0010-938X
CODEN
CRRSAA

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40000899
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CARBON STEELS; CORROSION; CORROSION PROTECTION; DISSOLUTION; ELECTROCHEMISTRY; HYDROXAMIC ACIDS; IMPEDANCE; POLARIZATION; SOLUTIONS; SURFACES; X-RAY PHOTOELECTRON SPECTROSCOPY
Descriptors DEC
ALLOYS; AMINES; CARBON ADDITIONS; CHEMICAL REACTIONS; CHEMISTRY; DISPERSIONS; ELECTRON SPECTROSCOPY; HOMOGENEOUS MIXTURES; HYDROXY COMPOUNDS; IRON ALLOYS; IRON BASE ALLOYS; MIXTURES; ORGANIC COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; SPECTROSCOPY; STEELS; TRANSITION ELEMENT ALLOYS

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.