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Hybrid sol-gel coatings for corrosion protection of galvanized steel in simulated concrete pore solution / Riba B. Figueira in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 2 (03/2016)
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Titre : Hybrid sol-gel coatings for corrosion protection of galvanized steel in simulated concrete pore solution Type de document : texte imprimé Auteurs : Riba B. Figueira, Auteur ; Carlos J. R. Silva, Auteur ; Elsa V. Pereira, Auteur Année de publication : 2016 Article en page(s) : p. 355-373 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.
Anticorrosifs
Anticorrosion
Corrosion
Electrochimie
Matériaux hybrides
Métaux -- Revêtements protecteurs
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : The aim of this experimental research was to study the electrochemical behavior of organic–inorganic hybrid (OIH) coatings for corrosion protection of hot-dip galvanized steel (HDGS) in the first instants of immersion in simulated concrete pore solution (SCPS) (pH > 12.5). The electrochemical performance of the OIH coatings was assessed by electrochemical impedance spectroscopy, potentiodynamic polarization curves, macrocell current density, and polarization resistance. The OIH coatings were prepared via the sol–gel method and were deposited on HDGS surfaces by dip-coating using one or three dip steps. The electrochemical results obtained for HDGS samples coated with OIH matrices in SCPS showed higher corrosion resistance than bare HDGS; as the molecular weight (MW) of Jeffamine® increased the barrier protection of the coating decreased. The lowest protection efficiency was found for HDGS samples synthesized with oligopolymers with an MW of 2000. Coatings produced with an oligopolymer of 230 MW conferred the highest protection. The surface morphology of the OIH coatings deposited on HDGS surfaces was studied by atomic force microscopy. The results show that the roughness of the OIH films depends on the MW of Jeffamine® and on the number of dip-coating steps used. Thermogravimetry results show that the Jeffamine® MW affected the thermal properties of the prepared OIH samples. The prepared OIH materials are thermally stable within the range of 20–80°C. Note de contenu : - EXPERIMENTAL : Reagents - Synthesis procedure of OIL ureasilicate matrix monoliths films and coatings by sol-gel method - Coating deposition - Electrochemical measurements - Coating morphology analysis - Thermogravimetric measurements (TGA)
- RESULTS AND DISCUSSION : Electrochemical impedance spectroscopy (EIS) - Potentiodynamic polarization studies - Macrocell current density (igal) and polarization resistance measurements - Surface characterization by AFM - Thermogravimetric analysis (TGA)DOI : 10.1007/s11998-015-9751-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9751-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26120
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 2 (03/2016) . - p. 355-373[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17962 - Périodique Bibliothèque principale Documentaires Disponible Hydrophobic modification of ZnO-MIO based epoxy coating for ferrous and non-ferrous substrates in PAINTINDIA, Vol. LXIX, N° 7 (07/2019)
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Titre : Hydrophobic modification of ZnO-MIO based epoxy coating for ferrous and non-ferrous substrates Type de document : texte imprimé Année de publication : 2019 Article en page(s) : p. 55-66 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs
Anticorrosion
Application directe sur le métal
Epoxydes
Métaux -- Revêtements protecteurs
Nanoparticules
Oxyde de fer micacé
Oxyde de zinc
Revêtement monocouche:Peinture monocouche
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Corrosion protection is a challenge to the humankind and lot of work is in progress to improve long term corrosion resistance by developing efficient coating system in a cost effective manner. Efforts on monocoat systems are getting profound interest and importance in industries over conventional primer, topcoat based two coat system or primer, high build MIO and topcoat based three coat system. Higher productivity, fast return to service, lower manpower and inventory cost make monocoat system highly desired. This research is aimed at developing a new and improved coating that employs silane modified hydrophobic nano zinc oxide coated micaceous Iron oxide as the active pigment to achieve synergistic corrosion resistant and barrier properties in a single coat that can combine the effect of primer and high build MIO coat. In the present paper synergistic effect and performances of silane modified hydrophobic nano zinc oxide coated micaceous Iron oxide were studied on different type of metalIic substrates. Note de contenu : - EXPERIMENTAL METHODOLOGY : Preparation of Nano Zinc oxide (ZnO) coated Micaceous Iron oxide (MIO) - Hydrophobic modification of nano-ZnO-MIO - Paint preparation
- TEST MEDHODS : SEM &Water Vapour Permeability - Salt spray resistance test - Pull off adhesion test - Contact angle measurement - Humidity resistance and DM water resistance test
- RESULTS & DISCUSSION : Summary of the results - Contact angle measurement - Water vapour permeability - Pull off adhesion testing - Cathodic disbondment
- SALT SPRAY TEST RESULTS : Humidity resistance and water resistance
- Fig. 1 : Cathodic disbondment (CD) - testing protocol
- Fig. 2 : FESEM images of zinc oxide coated MIO
- Fig. 3 : Digital photograph of the water droplet formed on the coated panels
- Fig. 4 : Weight gain by the paint film in presence of water vapour
- Fig. 5 : Digital photograph for pull of adhesion of the paint on the metal substrate
- Fig. 6 : Photos of cathodic delamination of different trial after 90 days at 25°C
- Fig. 7 : Relative disbondment radius of all the formulations
- Fig. 8 : MS panels showing salt spray test after 1000 hrs
- Fig. 9 : Galvanized panels showing salt spray test after 1000 hrs
- Fig. 10 : Humidity resistance on unprepared galvanised substrateEn ligne : https://drive.google.com/file/d/1yr3KKEv7ZkUoXxywWPVIl_6c3b-tkiXJ/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32818
in PAINTINDIA > Vol. LXIX, N° 7 (07/2019) . - p. 55-66[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21076 - Périodique Bibliothèque principale Documentaires Disponible Hydrophobic phytic acid conversion layers for corrosion protection of steel surfaces / Michelle Weinert in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 2 (03/2024)
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Titre : Hydrophobic phytic acid conversion layers for corrosion protection of steel surfaces Type de document : texte imprimé Auteurs : Michelle Weinert, Auteur ; Jochen S. Gutmann, Auteur ; Michael Dornbusch, Auteur Année de publication : 2024 Article en page(s) : p. 703-736 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.
Anticorrosifs
Anticorrosion
Caractérisation
Esterification
Métaux -- Revêtements protecteurs
Phytique, Acide
PolyamidesUn polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine.
Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères.
Revêtement de conversion
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : The possibility for a good conversion protection based on phytic acid (PA) solutions is described many times in the literature.1,2 The latest results show that PA cannot improve the corrosion protective properties with an organic coating,2 although PA conversion layers without organic coatings have already successfully been applied on different surfaces and the development of layers with enhanced corrosion protective behavior was possible.3,4 The reason why PA does not work together with an organic coating is based on the hydrophilic surface and therefore the low contact angle of the PA conversion layer.2 One solution is to modify PA directly and/or change the solution properties to increase the hydrophobic properties. In this work, a new and innovative way to synthesize a new type of sustainable organic PA-based conversion layers on steel, which works completely without titanium or zirconium and is a new approach for hydrophobic conversion layers, is presented.5 The results prove the formation of a pure PA-based conversion layer on the surface. The infrared (IR), Raman, and nuclear magnetic resonance (NMR) spectroscopy verified the new synthesis products and by means of the vibration spectroscopy, the resulting conversion layers. To analyze the new physical properties, the contact angle of the conversion layers was detected. By means of the electrochemical impedance spectroscopy (EIS), the electrochemical stability of the conversion was studied and with cyclic voltammetry (CV), the solidity ratio was investigated. At last, the corrosion protective performance of the layers in combination with an E-coat in the salt spray test (SST) was examined. All modified PA-based conversion layers in combination with E-coats increased the corrosion protective properties in relation to industrial used phosphate conversion layers of steel surfaces. The overall result is a new kind of hydrophobic phytic acid-based conversion layer which shows advanced anticorrosion and coatability properties compared to other layers based on PA. The results if the EIS measurements show that the resistance of the coating significantly increased, and diffusion could be suppressed by coating the metal surface with PA conversion layers. The comparison of the SST results for the reference and the modified PA underline these observations. The overall SST rating increased by 2 and the delamination went down to 1.9 mm while the corrosion was 0.1, comparable to phosphated steel. Note de contenu : - CHARACTERIZATION AND MATERIALS : Characterization - Materials and modified PA structures
- EXPERIMENTAL METHODS : Synthesis - Formation of a conversion layer
- CONVERSION LAYERS WITH CATHODIC DIP COATING : Two-layer system
- RESULTS AND DISCUSSION : Characterization of the conversion layerDOI : https://doi.org/10.1007/s11998-023-00852-w En ligne : https://drive.google.com/file/d/1YNEaZvyqrncDo6RPuyTAXXJ2cSNOz7MK/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40787
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 2 (03/2024) . - p. 703-736[article]Hyperbranched polyurethane based high-solid protective coating for marine application / R. Baloji Naik in PAINTINDIA, Vol. LXVIII, N° 12 (12/2018)
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Titre : Hyperbranched polyurethane based high-solid protective coating for marine application Type de document : texte imprimé Auteurs : R. Baloji Naik, Auteur ; G. Gunasekaran, Auteur ; D. Ratna, Auteur Année de publication : 2018 Article en page(s) : p. 53-66 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion
Anticorrosifs
Anticorrosion
Essais accélérés (technologie)
Essais dynamiques
Formulation (Génie chimique)
Haut extrait sec
Marines (peinture)
Pigments inorganiques
Polymères ramifiés
Polyuréthanes
Résistance aux conditions climatiques
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements antisalissures:Peinture antisalissures
Revêtements bi-composant:Peinture bi-composant
Spectroscopie d'impédance électrochimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : High-solid two-pack paint formulations based on hyperbranched alkyd polyol (HBA) and isocyanate curing agents were developed for high performance exterior coating application. The base component consists of a hyperbranched alkyd polyol (HBA) resin and a mixture of pigments like titanium dioxide, yellow iron oxide, carbon black and talc. The pigments were dispersed in the HBA resin using a ball milI for a period of 6 - 7 h. The base component is then cured separatly with two different types of isocyanate curing agents such as aliphatic isocyanate (Desmodur N3390) and cycloaliphatic isocyanate (Desmodur Z4470). These experimental paint compositions were applied on mild steel specimens coated with epoxy red oxide primer (two coats of primer and two coats of exterior grey paint). The coating systems were evaluated for adhesion, tensile, corrosion and weathering resistance properties. For comparison, specimens of the conventional (silicone alkyd) paint was also prepared and tested. Results indicate that the developed coating composition have superior mechanical, corrosion resistance and weathering resistance properties compared to the conventional silicone alkyd coating. Note de contenu : - EXPERIMENTAL : Materials - Design of HBUA based high solid paint formulations - Mechanical properties - Adhesion strength - Evaluation of resistance to accelerated weathering - Evaluation of corrosion resistance property under different exposure conditions - Electrochemical impedance spectroscopy (EIS)
- RESULTS AND DISCUSSION : Physical properties - Mechanical properties - Abrasion, scratch, impact resistance and flexibility tests - Adhesion strength - Accelerated weathering test - Accelerated corrosion test - Electrochemical impedance spectroscopyEn ligne : https://drive.google.com/file/d/1bTS6N1nH82_lqCplbUj3uv8mXD11kQXi/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31933
in PAINTINDIA > Vol. LXVIII, N° 12 (12/2018) . - p. 53-66[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20674 - Périodique Bibliothèque principale Documentaires Disponible Identification of a smart bond coating for gas turbine engine applications / Gurrappa Injeti in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 3 (09/2008)
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Titre : Identification of a smart bond coating for gas turbine engine applications Type de document : texte imprimé Auteurs : Gurrappa Injeti, Auteur Année de publication : 2008 Article en page(s) : p. 385-391 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Corrosion
Hautes températures
Matériaux intelligents
Métaux -- Revêtements protecteurs
OxydationIndex. décimale : 667.9 Revêtements et enduits Résumé : A smart bond coating was successfully identified for thermal barrier coatings (TBCs) that promotes appropriate protective scales preferentially during service depending on the environmental conditions. It enhances the life of super alloy components life significantly, which is essential for increasing the efficiency of advanced gas turbine engines. It is expected to be a potential bond coating for advanced gas turbine engine blades of different types, i.e., aero, industrial, and marine for their protection against high temperature oxidation, type I, and type II hot corrosion. DOI : 10.1007/s11998-008-9103-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9103-y.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2982
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 3 (09/2008) . - p. 385-391[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010633 - Périodique Bibliothèque principale Documentaires Disponible Impact of hybrid self-assembled nanophase particle-based sol–gel coatings on the localized corrosion behavior of modified 9Cr–1Mo steel in chloride medium / S. Ramya in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 1 (01/2017)
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PermalinkImproved corrosion protection of acrylic waterborne coating by doping with microencapsulated corrosion inhibitors / Jacob Ress in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 212, N° 4673 (02/2022)
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PermalinkImproved corrosion protection performance of electrophoretic epoxy coatings with the incorporation of amino-functionalized graphene oxide / Rui Gou in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 2 (03/2024)
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PermalinkImproved corrosion resistance and hydrophobic stability of sol-gel coatings by benzoxazine modification on aluminum alloys AA1060 / Zhou Zhou in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 3 (05/2024)
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PermalinkImproved corrosion resistance based on APTES-grafted reduced sulfonated graphene/waterborne polyurethane coatings / Jian Luo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 5 (09/2018)
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PermalinkImproved long-term protection for agricultural and construction machinery / Thomas Willumeit in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 8, N° 1 (2015)
PermalinkImprovement in corrosion resistance of WE43 magnesium alloy by the electrophoretic formation of a ZnO surface coating / J. E. Qu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 6 (11/2019)
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PermalinkImprovement of adherence and anticorrosion properties of an epoxy-polyamide coating on steel by incorporation of an indole-3 butyric acid-modified nanomagnetite / Anh Truc Trinh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 3 (05/2016)
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PermalinkImproving anticorrosion performance of epoxy coating by hybrids of rGO and g-C3N4 nanosheets / Zhuang Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 4 (07/2022)
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PermalinkImproving the bottom line in water project corrosion management / Bobbi Jo E. Merten in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 6 (06/2017)
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PermalinkIn-situ phosphatizing coatings II : a high-solids polyester baking enamel / Tao Yu in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 892 (05/1999)
PermalinkIn-situ phosphatizing coatings III : a water-reducible alkyd baking enamel / Tao Yu in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 895 (08/1999)
PermalinkIn situ pipeline coating process passes saudi desert test / Baker S. Hammad in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 30, N° 2 (02/2013)
PermalinkIn situ preparation and properties of waterborne polyurethane/edge-isocyanated hexagonal boron nitride composite dispersions / Huixiang Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 1 (01/2021)
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