Corrosion performance of anodic films containing polyaniline and TiO2 nanoparticles on AA3105 aluminium alloy

O. Zubillaga; F. J. Cano; I. Azkarate; I. S. Molchan; G. E. Thompson; A. M. Cabral; P. J. Morais

doi:10.1016/j.surfcoat.2008.06.169

Corrosion performance of anodic films containing polyaniline and TiO₂ nanoparticles on AA3105 aluminium alloy

O. Zubillaga, F. J. Cano, I. Azkarate, I. S. Molchan, G. E. Thompson, A. M. Cabral, P. J. Morais

Research output: Contribution to journal › Article › peer-review

61 Citations (Scopus)

Abstract

The corrosion protection afforded to an AA3105 aluminium alloy supporting an anodic film with incorporated polyaniline and TiO₂ nanoparticles has been examined. The films were synthesised by simultaneous anodizing and electropolymerisation of aniline in the presence of nanoparticles. The morphology and composition of the films were probed by TEM, SEM, rf-GDOES and XPS. The resultant coatings comprised a thin porous anodic film of 2-3 μm thickness, with an outer hybrid polyaniline/TiO₂ layer of several tens nanometres thickness, with the dimensions of TiO₂ nanoparticles being below 10 nm. Electrochemical impedance spectroscopy analysis and salt spray testing revealed that TiO₂ containing films provide improved corrosion protection to the AA3105 aluminium alloy compared with the film without nanoparticles. The improved protection provided by the coatings containing TiO₂ nanoparticles is attributed to the TiO₂ particle-rich thin film layer formed on the outer part of the coating that acts as a blocking barrier layer for the anodic porous aluminium oxide film.

Original language	English
Pages (from-to)	5936-5942
Number of pages	7
Journal	Surface and Coatings Technology
Volume	202
Issue number	24
DOIs	https://doi.org/10.1016/j.surfcoat.2008.06.169
Publication status	Published - 15 Aug 2008

Keywords

Aluminium alloy
Conducting polymer
Corrosion protection
Nanoparticles

Access to Document

10.1016/j.surfcoat.2008.06.169

Cite this

@article{188e9a00dc044a81b42cbf3d42eabff1,

title = "Corrosion performance of anodic films containing polyaniline and TiO2 nanoparticles on AA3105 aluminium alloy",

abstract = "The corrosion protection afforded to an AA3105 aluminium alloy supporting an anodic film with incorporated polyaniline and TiO2 nanoparticles has been examined. The films were synthesised by simultaneous anodizing and electropolymerisation of aniline in the presence of nanoparticles. The morphology and composition of the films were probed by TEM, SEM, rf-GDOES and XPS. The resultant coatings comprised a thin porous anodic film of 2-3 μm thickness, with an outer hybrid polyaniline/TiO2 layer of several tens nanometres thickness, with the dimensions of TiO2 nanoparticles being below 10 nm. Electrochemical impedance spectroscopy analysis and salt spray testing revealed that TiO2 containing films provide improved corrosion protection to the AA3105 aluminium alloy compared with the film without nanoparticles. The improved protection provided by the coatings containing TiO2 nanoparticles is attributed to the TiO2 particle-rich thin film layer formed on the outer part of the coating that acts as a blocking barrier layer for the anodic porous aluminium oxide film.",

keywords = "Aluminium alloy, Conducting polymer, Corrosion protection, Nanoparticles",

author = "O. Zubillaga and Cano, {F. J.} and I. Azkarate and Molchan, {I. S.} and Thompson, {G. E.} and Cabral, {A. M.} and Morais, {P. J.}",

year = "2008",

month = aug,

day = "15",

doi = "10.1016/j.surfcoat.2008.06.169",

language = "English",

volume = "202",

pages = "5936--5942",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier",

number = "24",

}

TY - JOUR

T1 - Corrosion performance of anodic films containing polyaniline and TiO2 nanoparticles on AA3105 aluminium alloy

AU - Zubillaga, O.

AU - Cano, F. J.

AU - Azkarate, I.

AU - Molchan, I. S.

AU - Thompson, G. E.

AU - Cabral, A. M.

AU - Morais, P. J.

PY - 2008/8/15

Y1 - 2008/8/15

N2 - The corrosion protection afforded to an AA3105 aluminium alloy supporting an anodic film with incorporated polyaniline and TiO2 nanoparticles has been examined. The films were synthesised by simultaneous anodizing and electropolymerisation of aniline in the presence of nanoparticles. The morphology and composition of the films were probed by TEM, SEM, rf-GDOES and XPS. The resultant coatings comprised a thin porous anodic film of 2-3 μm thickness, with an outer hybrid polyaniline/TiO2 layer of several tens nanometres thickness, with the dimensions of TiO2 nanoparticles being below 10 nm. Electrochemical impedance spectroscopy analysis and salt spray testing revealed that TiO2 containing films provide improved corrosion protection to the AA3105 aluminium alloy compared with the film without nanoparticles. The improved protection provided by the coatings containing TiO2 nanoparticles is attributed to the TiO2 particle-rich thin film layer formed on the outer part of the coating that acts as a blocking barrier layer for the anodic porous aluminium oxide film.

AB - The corrosion protection afforded to an AA3105 aluminium alloy supporting an anodic film with incorporated polyaniline and TiO2 nanoparticles has been examined. The films were synthesised by simultaneous anodizing and electropolymerisation of aniline in the presence of nanoparticles. The morphology and composition of the films were probed by TEM, SEM, rf-GDOES and XPS. The resultant coatings comprised a thin porous anodic film of 2-3 μm thickness, with an outer hybrid polyaniline/TiO2 layer of several tens nanometres thickness, with the dimensions of TiO2 nanoparticles being below 10 nm. Electrochemical impedance spectroscopy analysis and salt spray testing revealed that TiO2 containing films provide improved corrosion protection to the AA3105 aluminium alloy compared with the film without nanoparticles. The improved protection provided by the coatings containing TiO2 nanoparticles is attributed to the TiO2 particle-rich thin film layer formed on the outer part of the coating that acts as a blocking barrier layer for the anodic porous aluminium oxide film.

KW - Aluminium alloy

KW - Conducting polymer

KW - Corrosion protection

KW - Nanoparticles

UR - http://www.scopus.com/inward/record.url?scp=50449089488&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2008.06.169

DO - 10.1016/j.surfcoat.2008.06.169

M3 - Article

AN - SCOPUS:50449089488

SN - 0257-8972

VL - 202

SP - 5936

EP - 5942

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 24

ER -

Corrosion performance of anodic films containing polyaniline and TiO₂ nanoparticles on AA3105 aluminium alloy

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this