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Effect of La (40H-Cin)3 on filiform corrosion of coated steel

Catubig, R., Forsyth, M. and Hinton, B. 2011, Effect of La (40H-Cin)3 on filiform corrosion of coated steel, in ICC 2011 : 18th International Corrosion Congress : Corrosion Control, Contributing to a Sustainable Future for All, International Corrosion Council, [Perth, W. A.], pp. 1-8.

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Title Effect of La (40H-Cin)3 on filiform corrosion of coated steel
Formatted title Effect of La (40H-Cin)3 on filiform corrosion of coated steel
Author(s) Catubig, R.
Forsyth, M.
Hinton, B.
Conference name International Corrosion Congress (18th : 2011 : Perth, W. A.)
Conference location Perth, W. A.
Conference dates 20-24 Nov. 2011
Title of proceedings ICC 2011 : 18th International Corrosion Congress : Corrosion Control, Contributing to a Sustainable Future for All
Editor(s) [Unknown]
Publication date 2011
Conference series International Corrosion Congress
Start page 1
End page 8
Publisher International Corrosion Council
Place of publication [Perth, W. A.]
Keyword(s) steel
rare earth
filiform
lanthanum
cinnamate
Summary The potential of lanthanum 4-hydroxy cinnamate to inhibit filiform corrosion on coated mild steel (AS1020) was investigated. The effectiveness and behaviour of this rare-earth inhibitor was examined with filiform corrosion scribe tests and Potentiodynamic Polarisation. The filiform scribe tests showed that lanthanum 4-hydroxy cinnamate, as a pigment in a coating, inhibited the initiation and propagation of both delamination and filiform corrosion on coated steel. The polarisation tests demonstrated that at pH 3, no significant inhibition was observed but a secondary passivation effect was present. At pH 9, inhibition on coated steel was found to be greater than that of the inhibition found at pH 6. The models of filament initiation and growth proposed by previous authors are also discussed.
Language eng
Field of Research 091299 Materials Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category E1 Full written paper - refereed
Persistent URL http://hdl.handle.net/10536/DRO/DU:30042398

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