Inhibition of 5083 aluminium alloy and galvanised steel by lanthanide salts

Lanthanide salts are being considered as an environmentally friendly alternative to the classic systems based on chromates. The inhibitor behaviour of CeCl 3 has been studied for both AA5083 alloy and galvanised steel in aerated NaCl solutions. For AA5083, cerium appears as dispersed islands whilst...

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Bibliographic Details
Published inCorrosion science Vol. 43; no. 1; pp. 157 - 170
Main Authors Arenas, M.A, Bethencourt, M, Botana, F.J, de Damborenea, J, Marcos, M
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 2001
Elsevier Science
Subjects
Aluminium alloy
Applied sciences
Cerium salts
Corrosion
Corrosion tests
Exact sciences and technology
Galvanised steel
Green inhibitor
Metals. Metallurgy
Cerium salts
Green inhibitor
Aluminium alloy
Corrosion
Galvanised steel
Aluminium base alloys
Galvanized steel
Salt corrosion
Corrosion inhibition
Steel
Experimental study
Corrosion protection
Sodium chloride
Corrosion inhibitor
Lanthanide compound
Chlorides
Cerium chloride
Cesium compound
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Summary:Lanthanide salts are being considered as an environmentally friendly alternative to the classic systems based on chromates. The inhibitor behaviour of CeCl 3 has been studied for both AA5083 alloy and galvanised steel in aerated NaCl solutions. For AA5083, cerium appears as dispersed islands whilst in the galvanised steel samples, it is stochastically dispersed onto the metallic surface, forming a film. These differences can be interpreted in terms of the distribution of cathodic areas for each material. In the case of AA5083, Al 6–(Mn,Fe,Cr) acts as permanent cathodic site whilst permanent cathodic sites do not exist in the galvanised steel.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0010-938X
1879-0496
DOI:10.1016/S0010-938X(00)00051-2