About coatings and cathodic protection / I. C. P. Margarit-Mattos in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 914 (03/2001)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 914 (03/2001) . - p. 61-65 Titre : About coatings and cathodic protection : Electrochemical features of coatings used on pipelines Type de document : texte imprimé Auteurs : I. C. P. Margarit-Mattos, Auteur ; Oscar R. Mattos, Auteur ; José Roberto R. M. Ferreira, Auteur ; Joaquim P. Quintela, Auteur Année de publication : 2001 Article en page(s) : p. 61-65 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau  revêtement  Utilisation  Pipeline  'Protection  contre  la  corrosion'  cathodique'  'Propriété  électrochimique'  'Goudron  houille'  Epoxyde  Polyéthylène  polyoléfine  Délaminage  électrique'  diélectrique'  'Dégradation  mécanique'  'Etude  expérimentale' Index. décimale : 667.9 Revêtements et enduits Résumé : The behavior of a coal tar, a polyethylene, and a fusion bonded epoxy was evaluated. Coated samples with and without intentional failures exposing the metallic substrate were submitted to different levels of cathodic polarization. The process of delamination was monitored with current and impedance measurements. The delamination was quantified by a standard method. No quantitative relationship between the delaminated areas and electrochemical parameters could be found; the reasons are discussed in terms of the properties of the coatings. It was shown that the higher the dielectric strength of coatings, the more critical the role of pores and mechanical damage in determining cathodic protection effectiveness. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5723 [article]

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Influence of surface cleaning by tools made of copper alloys on the painting performance / F. L. Fragata in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 2 (06/2009) . - p. 229-235 Titre : Influence of surface cleaning by tools made of copper alloys on the painting performance Type de document : texte imprimé Auteurs : F. L. Fragata, Auteur ; C. C. Amorim, Auteur ; A. P. Ordine, Auteur ; M. C. Marroig, Auteur ; R. O. Mota, Auteur ; I. C. P. Margarit-Mattos, Auteur Année de publication : 2009 Article en page(s) : p. 229-235 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuivre -- Alliages Revêtements:Peinture Spectroscopie de perte d'énergie des électrons Traîtements de surface Index. décimale : 667.9 Revêtements et enduits Résumé : Surface cleaning tools made of copper alloys are widely employed when sparks have to be avoided. On the other hand, copper residues may be left on the surface. It is not known whether such copper incrustation interferes with the performance of a painting system. Therefore, the aim of this paper is to evaluate the effect of steel surface treatment with copper-containing tools on the performance of a painting system. Painted samples pretreated with ferrous and copper-containing tools were submitted to corrosion tests. The performance was monitored by visual inspection and electrochemical impedance. The surfaces of unpainted samples were analyzed by energy dispersion spectroscopy (EDS) and the open circuit potentials were measured. It is shown that the residues left on the metallic surface due to the mechanical action of the cleaning tools did not interfere significantly with the performance of the painting system. DOI : 10.1007/s11998-008-9141-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9141-5.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5623 [article]

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