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Cerium acetate-modified aminopropylsilane triol : A precursor of corrosion-preventing coating for aluminum-finned condensers / T. Sugama in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 8 (10/2005)
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Titre : Cerium acetate-modified aminopropylsilane triol : A precursor of corrosion-preventing coating for aluminum-finned condensers Type de document : texte imprimé Auteurs : T. Sugama, Auteur Année de publication : 2005 Article en page(s) : p. 649-659 Note générale : Bibliogr. Langues : Américain (ame) Tags : Propriété thermique Etude expérimentale Corrosion sel Protection corrosion Stabilité Effet concentration Polycondensation solution Préparation Acier Aluminium Couche protectrice anticorrosion Cérium Acétate Inhibiteur Amine polymère Siloxane Matériau revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : A poly-acetamide-acetoxyl methyl-propylsiloxane (PAAMPS) polymer containing a cerium (Ce) oxide derivative was synthesized through three spontaneous reactions: condensation, amidation, and acetoxylation. The PAAMPS synthesizing took place between the Ce acetate dopant and aminopropylsilane triol (APST) as the film-forming precursor aqueous solution at 150°C. PAAMPS was evaluated for use as a corrosion-preventing coating for air-cooled condensers consisting of two metal components : aluminum fins and carbon steel tube. The key factors to ensuring the maximum performance of the PAAMPS/Ce oxide coating system in mitigating the corrosion of both aluminum and steel included (1) minimizing the content of non-reacted water-soluble APST and Ce acetate remaining in the coating, (2) lowering the susceptibility of the coating's surface to moisture, (3) precipitating a passive Ce3+ oxide (Ce2O3( film insensitive to Cl dissolution over the metal's surfaces, and (4) possessing excellent adhesion to the metal's surfaces. The combination of these factors considerably decreased the rate of the cathodic oxygen reduction reaction at the corrosion site of the metals. In fact, the corrosion rate, measured in milli-inches per year (mpy), of bare steel was reduced more than one order of magnitude by applying this coating. Correspondingly, the coating extended the useful lifetime of steel exposed in a salt-fog chamber at 35°C from only ~10 hr to ~768 hr. Furthermore, tins coating system far better protected an aluminum substrate from the corrosion than it did one of steel. Even a very thin nanoscale coating film deposited on the aluminum's surfaces reduced the corrosion rate, (mpy), by nearly two orders of magnitude over that of the bare aluminum. Also, the salt-spray resistance of aluminum panels covered by this nanoscale film was strikingly extended to more than 1440 hr, compared with -40 hr for bare aluminum. DOI : 10.1007/BF02774594 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02774594.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3790
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 2, N° 8 (10/2005) . - p. 649-659[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003121 - Périodique Bibliothèque principale Documentaires Disponible Composite linings for corrosion protection / Kanemasa Nomaguchi in JEC COMPOSITES MAGAZINE, N° 42 (07-08/2008)
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Titre : Composite linings for corrosion protection Type de document : texte imprimé Auteurs : Kanemasa Nomaguchi, Auteur Année de publication : 2008 Article en page(s) : p. 46-48 Langues : Anglais (eng) Tags : 'Canalisation eau usée' 'Matériau construction' Application 'Plastique renforcé fibre' Acier Béton revêtement' 'Couche protectrice anticorrosion' composite' Index. décimale : 668.4 Plastiques, vinyles Résumé : Plastic linings are used extensively to protect metal (e.g. steel) and concrete substrates from corrosion and, in doing so, perform a very important role in people's everyday lives. Corrosion control technology complies with the same strict standards as electric insulating technology and engineering, and significant progress has been made recently in the field. Note de contenu : - What is corrosion ?
- Basic concept
- Typic applications
- track record - Case study A : electric power stations
- Case study B : wastewater treatment facilitiesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14040
in JEC COMPOSITES MAGAZINE > N° 42 (07-08/2008) . - p. 46-48[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010604 - Périodique Bibliothèque principale Documentaires Disponible Effects of model coal tar components on adhesion strength of polyurethane coating on steel plate / Naoki Yokoyama in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 6 (04/2005)
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Titre : Effects of model coal tar components on adhesion strength of polyurethane coating on steel plate Type de document : texte imprimé Auteurs : Naoki Yokoyama, Auteur ; Kenichi Fujino, Auteur Année de publication : 2005 Article en page(s) : p. 445-451 Note générale : Bibliogr. Langues : Américain (ame) Tags : Propriété surface rhéologique mécanique Etude expérimentale Corrosion sel Résistance corrosion dynamomécanique traction Adhésivité Composé aromatique polycyclique Goudron houille Additif anticorrosion Relation formulation propriété Acier Couche protectrice Uréthanne polymère Matériau revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : In order to study the effects of coal tar components on the adhesion strength of a heavy duty anticorrosive coating formed with tar-urethane resin on a steel plate, polyurethane coatings that were compounded with 15 kinds of polycyclic aromatic compounds as model coal tar components were prepared. In the model coal tar components, naphthalene, quinoline, 2-naphthol, and phenanthrene showed good compatibility with polyurethane. To test their heavy duty anticorrosive properties, tensile adhesion strength of the cured coatings prepared with the compatible model coal tar components was measured, and the change in tensile adhesion strength as a function of time during salt-water spray treatment was measured. We found that the systems compounded with naphthalene, 2-naphthol, and phenanthrene showed good properties in an ordinary state for adhesion strength. However, only the system with 2-naphthol was found to have good properties in the change of tensile adhesion strength as a function of time during salt-water spray treatment. The curing time of the system with 2-naphthol was slower than that of the others, i.e., we found an inverse proportion between curing speed and adhesion durability. We also measured the dynamic viscoelasticity of cured coatings. We found that a tan delta curve of the system with 2-naphthol shifted towards a low temperature side and the tan delta at the temperature at which adhesion strength was measured was larger than that of the others. We hypothesized that the reason for the tan delta shift was a result of the decrease in crosslinking density because 2-naphthol partially capped the isocyanate group. Considering these results, we hypothesized that one of the reasons why the adhesion properties of the system with 2-naphthol had improved was due to the increase of tan delta. DOI : 10.1007/BF02733887 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02733887.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3839
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 2, N° 6 (04/2005) . - p. 445-451[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001483 - Périodique Bibliothèque principale Documentaires Disponible Effects of reaction conditions on the formation of poly(2-vinylpyridine) coatings by electropolymerization / Xiaoping Ling in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 908 (09/2000)
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Titre : Effects of reaction conditions on the formation of poly(2-vinylpyridine) coatings by electropolymerization Type de document : texte imprimé Auteurs : Xiaoping Ling, Auteur ; Mark D. Pritzker, Auteur ; Charles M. Burns, Auteur ; John J. Byerley Année de publication : 2000 Article en page(s) : p. 71-80 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Procédé Polymérisation électrolytique Pyridine(2-vinyl)polymère Pyridine(2-vinyl)copolymère Formation film Couche protectrice anticorrosion Acier doux Condition opératoire Etude expérimentale Index. décimale : 667.9 Revêtements et enduits Résumé : The effects of reaction conditions on the formation of poly(2-vinylpyridine) coatings on mild steel by electropolymerization have been investigated. Over the ranges studied, the relative effects of these reaction conditions on the weight of the coating produced is found to decrease as follows : monomer concentration > solution pH > methanol concentration > solution temperature. The optimum conditions for coating formation are to use a solution with a composition of 0.25 M 2-vinylpyridine, 15 vol% methanol, and pH 5.0 at a temperature of 20 °C. If the monomer concentration is too high, the coating formed is soft and tacky; if it is too low, a thin and non-uniform coating is produced. Methanol concentrations between 15 and 25 vol% are required to produce uniform and thick films. Coating weights decrease at electropolymerization temperatures above 40°C, presumably due to an increase in polymer solubility. The polymer films become thicker and more uniform as electrolysis continues up to two hours. Ammonium perchlorate is found to be the most suitable electrolyte for the process, although its actual concentration has little impact on film quality. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5789
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 72, N° 908 (09/2000) . - p. 71-80[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001213 - Périodique Bibliothèque principale Documentaires Disponible Optimization and performance analysis of copper immersion coating on AZ91 magnesium alloy / Lianxi Yang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 6 (04/2005)
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Titre : Optimization and performance analysis of copper immersion coating on AZ91 magnesium alloy Type de document : texte imprimé Auteurs : Lianxi Yang, Auteur ; Ben Luan, Auteur ; Woo-Jae Cheong, Auteur ; Jiaren Jiang, Auteur Année de publication : 2005 Article en page(s) : p. 493-498 Note générale : Bibliogr. Langues : Américain (ame) Tags : Métallisation Etude expérimentale Couche protectrice anticorrosion Matériau revêtement Plan expérience Condition mise en oeuvre Dépôt immersion Attaque chimique Traitement surface Magnésium alliage Cuivrage Optimisation Index. décimale : 667.9 Revêtements et enduits Résumé : An orthogonal experimental methodology was used to study a copper immersion coating on AZ91 magnesium alloy from a hydrofluoric acid-containing bath. Factors such as hydrofluoric acid concentration, sonication time, chemical etching, and activation process were considered in the design. The analysis of variance on the orthogonal experimental results was performed, resulting in an optimal condition for achieving a uniform copper coating with high coverage. Hydrofluoric acid was found to be an essential component in the copper immersion coating bath and a possible mechanism was suggested to explain its significance in terms of magnesium film destruction and magnesium dissolution. DOI : 10.1007/BF02733892 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02733892.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3844
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 2, N° 6 (04/2005) . - p. 493-498[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001483 - Périodique Bibliothèque principale Documentaires Disponible