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Electrochemical synthesis of poly(3,4-éthylenedioxythiophene) on stainless steel and its corrosion inhibition performance / Guang Zhu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 5 (09/2013)
[article]
Titre : Electrochemical synthesis of poly(3,4-éthylenedioxythiophene) on stainless steel and its corrosion inhibition performance Type de document : texte imprimé Auteurs : Guang Zhu, Auteur ; Jian Hou, Auteur ; Hongfei Zhu, Auteur ; Ri Qiu, Auteur ; Jingkun Xu, Auteur Année de publication : 2013 Article en page(s) : p. 659-668 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier inoxydable
Anticorrosifs
Electrochimie
Métaux -- Revêtements protecteurs
Poly(3,4-éthylènedioxythiophène)Index. décimale : 667.9 Revêtements et enduits Résumé : Poly(3,4-ethylenedioxythiophene) (PEDOT) coatings have been electrochemically prepared on stainless steel (SS) in acetonitrile and aqueous media, respectively, by the cyclic voltammetry technique. The corrosion behavior of the coated SS was evaluated in 3.5 wt% NaCl solution using anodic polarization and electrochemical impedance spectroscopy, which demonstrate that the polymer coatings are able to mitigate the corrosion of the SS substrate in chloride solution. PEDOT works as the electron exchange medium to passivate the SS underneath and reduce the oxygen on the surface. By comparing the performances, it was clear that PEDOT electrodeposited from an aqueous solution can afford better corrosion inhibition capability. DOI : 10.1007/s11998-013-9482-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9482-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19800
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Code-barres Cote Support Localisation Section Disponibilité 15618 - Périodique Bibliothèque principale Documentaires Disponible 15679 - Périodique Bibliothèque principale Documentaires Disponible L'électrochimie à la sauvegarde du patrimoine culturel métallique / Elodie Guilminot in L'ACTUALITE CHIMIQUE, N° 400-401 (10-11/2015)
[article]
Titre : L'électrochimie à la sauvegarde du patrimoine culturel métallique Type de document : texte imprimé Auteurs : Elodie Guilminot, Auteur Année de publication : 2015 Article en page(s) : p. 102-104 Note générale : Bibliogr. Langues : Français (fre) Catégories : Anticorrosifs
Anticorrosion
Antiquités (objets anciens) -- Conservation et restauration
Chimie en archéologie
Corrosion
Electrochimie
Electrolyse
FerIndex. décimale : 541.37 Electrochimie et magnétochimie Résumé : Cet article présente plusieurs applications de l’électrochimie pour restaurer des objets du patrimoine culturel métallique. Le premier exemple concerne les traitements des objets ferreux dont la corrosion est active à cause de la présence des ions chlorure. Ces ions chlorure sont extraits de l’objet par électrolyse. Les autres traitements électrolytiques pratiqués en conservation-restauration permettent de réduire les produits de corrosion présents à la surface des objets. Le cas des objets en plomb et des objets en argent sont explicités. Note de contenu : - Principe d'un traitement électrochimique : la stabilisation des ferreux par électrolyse
- Autres applications : réduction d'un produit de corrosion
- Développement des techniques innovantesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24796
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Code-barres Cote Support Localisation Section Disponibilité 17554 - Périodique Bibliothèque principale Documentaires Disponible Electrogalvanization using Zn-graphene oxide composite coatings with enhanced corrosion resistance performance / M. Y. Rekha in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 3 (05/2021)
[article]
Titre : Electrogalvanization using Zn-graphene oxide composite coatings with enhanced corrosion resistance performance Type de document : texte imprimé Auteurs : M. Y. Rekha, Auteur ; Chandan Srivastava, Auteur Année de publication : 2021 Article en page(s) : p. 753-760 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Corrosion
Dépôt électrolytique
Galvanisation
Métaux -- Revêtements protecteurs
Oxyde de graphène
ZincIndex. décimale : 667.9 Revêtements et enduits Résumé : Zn-based coatings are extensively used for the protection of steel structures. Efforts toward further enhancement in the corrosion resistance performance of Zn coatings are therefore an area of continued interest. In this work, Zn-graphene oxide (Zn-GO) composite coatings containing different volume fractions of GO were electrodeposited on mild steel substrates using an electrolyte bath with different concentrations of dispersed graphene oxide. The electrodeposition parameters used yielded compact and crack-free morphology for all the coatings. Incorporation of GO led to a refinement of the Zn crystallites in the coating matrix. Potentiodynamic polarization measurements clearly showed that all the Zn-GO composite coatings exhibited higher corrosion resistance performance when compared to the pristine Zn coatings, and further, the corrosion rate decreased with the increase in the volume fraction of the GO in the composite coatings. DOI : https://doi.org/10.1007/s11998-020-00439-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00439-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35927
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Code-barres Cote Support Localisation Section Disponibilité 22785 - Périodique Bibliothèque principale Documentaires Disponible Electrophoretically deposited graphene oxide–polymer bilayer coating on Cu-Ni alloy with enhanced corrosion resistance in simulated chloride environment / Geetisubhra Jena in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 5 (09/2019)
[article]
Titre : Electrophoretically deposited graphene oxide–polymer bilayer coating on Cu-Ni alloy with enhanced corrosion resistance in simulated chloride environment Type de document : texte imprimé Auteurs : Geetisubhra Jena, Auteur ; S. C. Vanithakumari, Auteur ; S. R. Polaki, Auteur ; R. P. George, Auteur ; John Philip, Auteur ; G. Amarendra, Auteur Année de publication : 2019 Article en page(s) : p. 1317-1335 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse électrochimique
Anticorrosifs
Anticorrosion
GraphèneLe graphène est un cristal bidimensionnel (monoplan) de carbone dont l'empilement constitue le graphite. Il a été isolé en 2004 par Andre Geim, du département de physique de l'université de Manchester, qui a reçu pour cette découverte le prix Nobel de physique en 2010 avec Konstantin Novoselov. Il peut être produit de deux manières : par extraction mécanique du graphite (graphène exfolié) dont la technique a été mise au point en 2004, ou par chauffage d'un cristal de carbure de silicium, qui permet la libération des atomes de silicium (graphène epitaxié). Record en conduction thermique jusqu'à 5300 W.m-1.K-1. C'est aussi un matériaux conducteur.
Métaux -- Revêtements protecteurs
Oxyde de graphène
Polarisation (électricité)
Polyacryliques
Revêtements multicouches
Spectroscopie d'impédance électrochimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : An environmentally benign and facile bilayer coating comprised of graphene oxide (GO) and acrylic polymer is fabricated over cupronickel sample using electrophoretic deposition followed by dip coating. The infrared, Raman, and field emission scanning electron microscopy (FESEM) studies of the bilayer coating confirm the noncovalent functionalization of GO through H-bonding with acrylic polymer, reduction in local defects in GO structure, and distorted spherical void peripheries of polymer coating, respectively. The FESEM cross-sectional analysis showed that the coating thickness is 5–6 µm. The bilayer-coated sample showed a three- to fourfold increase in the corrosion resistance, as compared to GO-alone-coated sample in 3.5% (w/v) NaCl electrolyte, which is attributed to the reduction in the local defects in GO coating and the galvanic coupling between the GO and sample surface. The GO sheets make the diffusion pathway of corrosive media more tortuous for corrosive ions to reach the metal surface. The lower anodic current density observed with the new bilayer coating after 30 days of exposure confirms the active corrosion protection. The coating was intact and stable after 30 days of exposure in chloride medium with a water uptake of about 32.7%. Note de contenu : - EXPERIMENTAL METHODS : Materials - GO coating on Cu-Ni alloy by electrophoretic deposition (EPD) - Post-treatment of GO-coated Cu-Ni with acrylic-based polymer - Characterization of coatings before exposure - Electrochemical studies - Long-term exposure studies
- RESULTS AND DISCUSSION : Characterization of coatings before exposure - Electrochemical characterization - Elucidating the mechanism of corrosion protection performance - Long-term exposure studies - Electrochemical characterization under long-term exposure - Characterization of uncoated and Go-polymer bilayer-coated Cu-Ni samples after long-term exposureDOI : 10.1007/s11998-019-00213-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00213-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33014
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Code-barres Cote Support Localisation Section Disponibilité 21154 - Périodique Bibliothèque principale Documentaires Disponible Elucidation of corrosion failure mechanisms of coated phosphated steel substrates / Sarjak Amin in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 3 (09/2008)
[article]
Titre : Elucidation of corrosion failure mechanisms of coated phosphated steel substrates Type de document : texte imprimé Auteurs : Sarjak Amin, Auteur ; Sundaresan Avudaiappan, Auteur ; Askarali Johnpasha, Auteur ; Theodore Provder, Auteur ; F. Louis Floyd, Auteur Année de publication : 2008 Article en page(s) : p. 311-325 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Analyse des défaillances (fiabilité)
Anticorrosifs
Anticorrosion
Délaminage
Electrochimie
Epoxydes
Essais accélérés (technologie)
Essais de brouillard salin
Latex
Métaux -- Revêtements protecteurs
Oxygène
Passivité (Chimie)
Perméabilité
Phosphatation
Polyalkydes
Revêtement en phase solvant:Peinture en phase solvant
Revêtements bi-composant:Peinture bi-composant
Revêtements en phase aqueuse:Peinture en phase aqueuse
Vapeur d'eauIndex. décimale : 667.9 Revêtements et enduits Résumé : Coatings are commonly believed to protect metal surfaces from corrosion based on some combination of their barrier properties and electrochemical properties. Various physical and electrochemical tests were performed on seven different coatings (latex, alkyd, 2-PK epoxy, and electrocoat) to determine which properties were the main determinants of corrosion resistance in continuous and cyclic corrosion tests. Physical property tests and AC electrochemical tests were all related to barrier behavior, while DC electrochemical tests were related to electrochemical behavior. DC electrochemical properties are commonly associated with inhibitor chemistry, but can be broadly related to all components of the paint. These test results were compared with corrosion test results from both continuous (B-117) and cyclic (GM9540) accelerated tests. The best correlation was seen with a model emphasizing barrier behavior with a secondary component relating to electrochemical protection. DOI : 10.1007/s11998-008-9088-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9088-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2975
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