Interaction of interfacial debonding and under-film corrosion propagation at the edge of the blistering area of epoxy coating / Chao Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 2 (03/2023) . - p. 457-468 Titre : Interaction of interfacial debonding and under-film corrosion propagation at the edge of the blistering area of epoxy coating Type de document : texte imprimé Auteurs : Chao Li, Auteur ; Jin Gao, Auteur ; Yunhua Huang, Auteur ; Xin Zhang, Auteur ; Xiaogang Li, Auteur Année de publication : 2023 Article en page(s) : p. 457-468 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. Chimie des surfaces Cloquage (défauts) Corrosion Epoxydes Revêtements organiques Spectroscopie d'impédance électrochimique Index. décimale : 667.9 Revêtements et enduits Résumé : The blistering of epoxy coating and its evolution were investigated after being exposed to 3.5 wt% NaCl solution. The evolution of under-film corrosion could be divided into four stages according to the observation of the corrosion morphology and the distribution of corrosion products and elements. Corrosion propagation was related to the distribution of media at the edge of the blistering area. Local electrochemical impedance spectroscopy analysis revealed that local impedance mapping could help in predicting the direction of corrosion propagation. The interfacial debonding at the edge of the blistering area was a necessary condition for corrosion propagation. Note de contenu : - EXPERIMENT : Specimens - Instrumentation - RESULTS : Analysis of microenvironment under blistering - Local electrochemical impedance of the blistering area DOI : https://doi.org/10.1007/s11998-022-00680-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00680-4.pdf?pdf=button% [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39291 [article]

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Superhydrophobic surfaces for corrosion protection : a review of recent progresses and future directions / Dawei Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 1 (01/2016)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 1 (01/2016) . - p. 11-29 Titre : Superhydrophobic surfaces for corrosion protection : a review of recent progresses and future directions : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9744-6.pdf Type de document : texte imprimé Auteurs : Dawei Zhang, Auteur ; Luntao Wang, Auteur ; Hongchang Qian, Auteur ; Xiaogang Li, Auteur Année de publication : 2016 Article en page(s) : p. 11-29 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion Hydrophobie Microstructures Mouillage (chimie des surfaces) Revêtement autoréparant:Peinture autoréparante Index. décimale : 667.9 Revêtements et enduits Résumé : Due to their superior water-repelling effects, superhydrophobic surfaces have received increasing attention as a promising solution to corrosion of metallic materials. The present article introduces the fundamental theories behind superhydrophobicity followed by a comprehensive review of the recent progresses of this rapidly growing field over the past 5 years. A critical discussion over anticorrosion mechanisms of superhydrophobic surfaces is also provided. For many realistic applications, future efforts are pressingly demanded to prolong the corrosion resistance of these superhydrophobic surfaces. To this end, several important strategies and examples in designing stable, self-healable, or inhibitor-loaded superhydrophobic surfaces are discussed. Note de contenu : - THE THEORY OF SUPERHYDROPHOBIC SURFACES : Wettability of a smooth surface - Wettability of a rough surface - APPLICATION OF SUPERHYDROPHOBIC SURFACES FOR CORROSION PROTECTION : Etching - Wet chemical reaction - Hydrothermal method - Anodization - Electrodeposition - Sol-gel method - Nanocomposite coatings - Templating - Mechanistic aspects - FUTURE TRENDS IN DEVELOPMENT OF SUPERHYDROPHOBIC SURFACES WITH LONG-LASTING CORROSION RESISTANCE : Improving the stability of superhydrophobic surfaces - Self-healing capability of superhydrophobic surfaces - Inhibitor-containing superhydrophobic coatings DOI : 10.1007/s11998-015-9744-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9744-6.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25368 [article]

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The formation and corrosion behavior of a zirconium-based conversion coating on the aluminum alloy AA6061 / Dongdong Peng in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 5 (09/2016)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 5 (09/2016) . - p. 837-850 Titre : The formation and corrosion behavior of a zirconium-based conversion coating on the aluminum alloy AA6061 Type de document : texte imprimé Auteurs : Dongdong Peng, Auteur ; Junsheng Wu, Auteur ; Xiaoli Yan, Auteur ; Xiaoqiong Du, Auteur ; Yueying Yan, Auteur ; Xiaogang Li, Auteur Année de publication : 2016 Article en page(s) : p. 837-850 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aluminium -- Alliages Anticorrosion Corrosion par piqure Electrochimie Essais accélérés (technologie) Métaux -- Revêtements protecteurs Revêtement métallique Zirconium Index. décimale : 667.9 Revêtements et enduits Résumé : To understand the mechanism of the coating formation, the formation process of a zirconium-based conversion coating on aluminum alloy 6061 has been studied by means of AFM in PeakForce Kelvin Probe Force Microscope (PF-KPFM) mode which could provide direct evidence for the existence of driving force for the film formation. In addition, various techniques including SEM, XPS, EIS, salt spray test, and scanning electrochemical microscope were used to investigate the surface state and corrosion behavior of the conversion film. The direct driving force for the coating formation is the Volta potential difference between the intermetallic particles and matrix. That difference produces an ocean of micro electrochemical cells in which the intermetallic particles act as cathodic sites for the film deposition. However, the precipitation of the layer is a self-limited process in which the driving force gradually decreases as the conversion layer covers the surface of the aluminum alloys. The anti-corrosion performance of the film is unfavorable compared to the conventional chromate conversion coatings due to the pitting corrosion that occurs when exposed to harsh environment containing chloride. Furthermore, the zirconium-based conversion coating possesses no self-healing ability leading to the continuous degradation of the film until it completely lose efficacy. Note de contenu : - EXPERIMENTAL : Materials and surface pre-treatment - Surface characterization - Electrochemical measurements - Salt spray test - Scanning electrochemical measurement - RESULTS AND DISCUSSION : The formation process of the conversion - Optimization of practical parameters for better corrosion-resistant properties of the conversion coating - Corrosion behavior of the conversion film fabricated in optimal practical parameters DOI : 10.1007/s11998-016-9789-1 En ligne : http://link.springer.com/content/pdf/10.1007%2Fs11998-016-9789-1.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27123 [article]

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