Performance of rust converter based in phosphoric and tannic acids

The role of a rust converter with tannic and phosphoric acids is evaluated for painted and unpainted steel with different corrosion degrees and salts contaminating the rust. The performance of unpainted samples is monitored with impedance and characterized by X-ray, infrared and Raman spectroscopies...

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Bibliographic Details
Published inCorrosion science Vol. 46; no. 6; pp. 1515 - 1525
Main Authors Ocampo, L.M, Margarit, I.C.P, Mattos, O.R, Córdoba-de-Torresi, S.I, Fragata, F.L
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.06.2004
Elsevier Science
Subjects
A. Acid solutions
Applied sciences
B. EIS
C. Atmospheric corrosion
C. Paint coatings
C. Rust
Corrosion
Corrosion environments
Corrosion mechanisms
Exact sciences and technology
Metals. Metallurgy
C. Paint coatings
C. Rust
C. Atmospheric corrosion
B. EIS
A. Acid solutions
Steel converter
Steelmaking
Phosphoric acid
Rust
Rust converter
Corrosion
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Summary:The role of a rust converter with tannic and phosphoric acids is evaluated for painted and unpainted steel with different corrosion degrees and salts contaminating the rust. The performance of unpainted samples is monitored with impedance and characterized by X-ray, infrared and Raman spectroscopies. Results show long-term action of the converter. For painted samples, loss of adhesion and corrosion spread around a scratch are measured after alternated immersion corrosion test. For rusted samples with high chloride contamination, the converter is harmful. For rusted samples with lower contamination, the influence of the converter on the performance of the painting is not detected.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2003.09.021