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]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 3 (09/2008) . - p. 311-325 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'eau Index. 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 : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2975 [article]

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Polymeric materials for corrosion control / Ray A. Dickie / Washington [United States] : American Chemical Society (1986)

Titre : Polymeric materials for corrosion control : Developed from a symposium sponsored by the division of polymeric materials science and engineering at the 190 th meeting of the American Chemical Society, Chicago, Illinois, September 8-13, 1985 Type de document : texte imprimé Auteurs : Ray A. Dickie, Editeur scientifique ; F. Louis Floyd, Editeur scientifique Editeur : Washington [United States] : American Chemical Society Année de publication : 1986 Collection : ACS symposium series num. 322 Importance : IX-374 p. Présentation : ill. Format : 25 cm ISBN/ISSN/EAN : 978-0-8412-0998-5 Note générale : ACS symposium series Langues : Américain (ame) Langues originales : Américain (ame) Catégories : Anticorrosion Congrès et conférences Corrosion Polymères Revêtements organiques Revêtements protecteurs Index. décimale : 668.9 Polymères Note de contenu : - 1. Polymeric materials for corrosion control : an overview - EVALUATION OF MATERIAL PERFORMANCE : 2. Alternating current impedance and underfilm darkening studies on acidic water-based anticorrosive paints - 3. New methods in electrochemical assessment of polymer coatings on steel - 4. Application of electrochemical noise measurements tocoated systems - 5. Electrochemical characterization of photocured coatings - 6. Alternating current impedance : Utility in evaluating phosphate coating, phosphorus-chromium rinse, and paint performance - 7. Evaluation of coating resins for corrosion protection of steel exposed to dilute sulfuric acid - 8. Comparison ol laboratory tests and outdoor tests of paint coatings for atmospheric exposure - 9. Degradation of organic protective coatings on steel - 10. Permeabilities of model coatings : Effect of cross-link density and polarity - 11. Using acoustic emission to investigate disbonding at the polymer-metal interface - ADHESION AND INTERFACIAL ASPECTS OF CORROSION PROTECTION : 12. Mechanisms of de-adhesion of organic coatings from metal surfaces - 13. Chemical studies of the organic coating-steel interface after exposure to aggressive environments - 14. Adhesion loss of ultraviolet-cured lacquer on nickel-plated steel sheets - 15. Cathodic delamination of protective coatings : Cause and control - 16. Effect of surface preparation on the durability of structural adhesive bonds - 17. effects of corrosive environments on the locus and mechanism - 18. New polymeric materials for metal conversioncoating applications - 19. Enhancement of acid-chloride resistance in a chromate conversion coating - MATERIALS FOR CORROSION PROTECTION : 20. How organic coating systems protect against corrosion - 21. Improving the performance of zinc-pigmented coatings - 22. Organic corrosion inhibitors to improve the durability of adhesion between aluminium and polymeric coatings - 23. Inhibition of copper corrosioon by azole compounds in acidic aqueous solutions - 24. Corrosion protection on copper by polyvinylimidazole - 25. N-(Hydroxyalkyl)acrylamide copolymers for corrosion control - 26. Humidity testing of silicone polymers for corrosion control of implanted medical electronic prostheses - 28. Corrosion behavior of epoxy and unsaturated polyester resins in alkaline solution - 29. Structure-property relationships in tin-based antifouling paints - 30. Polyurethane foam component lifetimes - 31. Rubber coatings for fiberglass protection in an alkaline environment Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=913

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Reducing product development cycle times without increasing risk / F. Louis Floyd in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 70, N° 876 (01/1998)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 70, N° 876 (01/1998) . - p. 71-81 Titre : Reducing product development cycle times without increasing risk Type de document : texte imprimé Auteurs : F. Louis Floyd, Auteur Année de publication : 1998 Article en page(s) : p. 71-81 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Evaluation du risque Production -- Gestion Recherche industrielle Temps de cycle (production) -- Réduction Index. décimale : 667.9 Revêtements et enduits Résumé : Both market forces and the regulatory climate are causing companies to seek ways to accelerate the product development process. Unfortunately, shortening development times usually increases the risk level that a company is forced to live with. Historically, R&D has exercised the role of risk manager in corporations by testing prospective products extensively over long times and under varied conditions to insure that there will be no significant failures, once commercially introduced. Today, this style of risk management is untenable—it simply takes too long and costs too much, without delivering commensurate success. The field of reliability theory offers guidance on how to better understand the sources of risk, and how to quickly assess their magnitude, all on a time scale that allows far more rapid innovation than currently enjoyed in the coatings industry. Better yet, it offers insight on how to accomplish this without increasing the total risk experienced by a company. Note de contenu : - INTRODUCTION : Time pressures - Quality pressures - THE DIMENSIONS OF RISK : Risk perception - Conservative response to risk - Actual Sources of product failures - Managing risk - CURRENT PRODUCT DEVELOPMENT PROTOCOL - HOW CAN WE SAVE TIME? : A fast cycle time example - HOW CAN WE SAVE EVEN MORE TIME ? : Improving our experimental techniques - Shift in traditional roles and relationships - SOFT FINAL THOUGHTS Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17958 [article]

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Sources of error in VOC determination via EPA Method 24 / Daniel J. Mania in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 919 (08/2001)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 919 (08/2001) . - p. 111-117 Titre : Sources of error in VOC determination via EPA Method 24 Type de document : texte imprimé Auteurs : Daniel J. Mania, Auteur ; Michele L. Bruck, Auteur ; Sarah Fezzey, Auteur ; F. Louis Floyd, Auteur Année de publication : 2001 Article en page(s) : p. 111-117 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau  revêtement  Peinture  Analyse  chimique  Composé  organique  volatil  Méthode  mesure  Erreur Index. décimale : 667.9 Revêtements et enduits Résumé : Forty-five paint samples having volatile organic content (VOCs) ranging from 7 to 562 g/L were prepared and tested for VOC according to EPA Method 24. In addition, all individual raw materials utilized in preparing the paints were also tested for their VOCs. There were significant differences between claimed and measured VOCs for both raw materials and finished paints. The measurement error for VOC of finished paints was eight percent. This error increased exponentially as the VOC declined below about 250 g/L, reaching about 200% at VOCs below 50 g/L. The range of error also increased exponentially below about 250 g/L, reaching 1000% below 50 g/L. The major sources of VOC error in all cases ere in the water and nonvolatile determinations. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5745 [article]

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Using DC electrochemical techniques to assess the relative corrosiveness of water-based coatings and their ingredients / F. Louis Floyd in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 2 (06/2007)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 4, N° 2 (06/2007) . - p. 111-129 Titre : Using DC electrochemical techniques to assess the relative corrosiveness of water-based coatings and their ingredients Type de document : texte imprimé Auteurs : F. Louis Floyd, Auteur ; Sumeet Tatti, Auteur ; Theodore Provder, Auteur Année de publication : 2007 Article en page(s) : p. 111-129 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion Corrosion électrochimique Formulation (Génie chimique) Latex Mesure Revêtements en phase aqueuse:Peinture en phase aqueuse Spectroscopie d'impédance électrochimique Index. décimale : 667.9 Revêtements et enduits Résumé : It has been common to assess corrosion inhibitors by ranking their relative corrosion currents at some arbitrary potential above the open circuit potential via DC potentiodynamic anodic scans. Grose-close et al.1 demonstrated that when bare steel panels are subjected to such scans, the difference in mV between the open circuit potential and breakdown potential is a sensitive measure of the panels' tendency to corrode once coated and exposed to a corrosive environment. The present authors show that a combination of the two DC electrochemical techniques can be used to assess the relative corrosion (or inhibition) contribution of various ingredients in water-based coatings, and that those results translate into the same order of behavior when coatings utilizing those ingredients were applied to steel and tested in a corrosive environment. This technique is also shown to be capable of ranking finished liquid paints for their subsequent corrosion resistance as dried coatings on steel, and verifying the batch consistency of liquid paints in production. DOI : 10.1007/s11998-007-9012-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9012-5.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3653 [article]

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