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Anti-fingerprints fluorinated coating for anodized titanium avoiding color alteration / Walter Navarrini in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 153-160 Titre : Anti-fingerprints fluorinated coating for anodized titanium avoiding color alteration Type de document : texte imprimé Auteurs : Walter Navarrini, Auteur ; Tommaso Brivio, Auteur ; Dmitrij Capobianco, Auteur ; Maria Vittoria Diamanti, Auteur ; Mariapia Pedeferri, Auteur ; Luca Magagnin, Auteur ; Giuseppe Resnati, Auteur Année de publication : 2011 Article en page(s) : p. 153-160 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Décoloration Métaux -- Oxydation anodique Perfluoropolyéther Propriétés anti-empreintes Revêtements Titane Index. décimale : 667.9 Revêtements et enduits Résumé : In this study amorphous fluorinated coatings applied to anodized titanium surface have been investigated. A copolymer between tetrafluoroethylene and perfluoro-4-trifluoromethoxy-1,3-dioxole (AD60) and two perfluoropolyether containing ammonium phosphate (F10) or triethoxysilane (S10) functionalities have been tested. To estimate the color alteration of the anodized titanium surfaces due to the application of the coatings, spectrophotometric analyses have been made. Water and n-dodecane contact angles as well as apparent surface energy have been evaluated. Ellipsometry and atomic force microscopy data have been used to measure the thickness of the fluorinated coatings. A tailored mechanical preliminary test has also been explored to evaluate the adhesion of the coatings on the anodized titanium surface. The resistance to surface soiling with castor oil was also preliminarily investigated. The fluorinated coating tested on anodized titanium showed a low apparent surface energy and high chromatic aspect conservation, this is particularly evident for the titanium anodized coated with triethoxysilane functionalities fluoropolymers S10. Note de contenu : - Materials - General methodology for the preparation of titanium anodized substrates - General methodology for the coating of anodized titanium plates - Contact angle measurements - spectrophotometry - Ellipsometry and AFM DOI : 10.1007/s11998-010-9293-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9293-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11357 [article]

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Electrophoretic fabrication of thermal barrier coatings / R. Hashaikeh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 161-169 Titre : Electrophoretic fabrication of thermal barrier coatings Type de document : texte imprimé Auteurs : R. Hashaikeh, Auteur ; J. A. Szpunar, Auteur Année de publication : 2011 Article en page(s) : p. 161-169 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dépôt électrolytique Electrophorèse Isolation thermique Primaire (revêtement) Revêtement de céramique Index. décimale : 667.9 Revêtements et enduits Résumé : An electrochemical method of fabrication of (NiCoCrAlY)/MgO/yttria-stabilized zirconia (YSZ) multilayered coating was proposed. This multilayered coat is expected to work as a thermal barrier coating for nickel superalloy substrates. The (NiCoCrAlY) layer was deposited using the electrophoretic deposition technique, the MgO layer was deposited by the electrolytic deposition technique and the YSZ layer was electrophoretically deposited. The process of depositing (NiCoCrAlY) alloy particles revealed that the electrophoretic technique can be used for particles with submicron dimensions. The MgO intermediate layer was introduced to accommodate the difference in thermal expansion coefficient between the YSZ ceramic and the NiCoCrAlY metal layers. Note de contenu : - EXPERIMENTAL WORK : Step 1 : Electrophoretic deposition of (NiCoCrAlY) metal parcticles to be used as the bond coat. Step 2 : Electrolytic coating of an intermediate ceramic layer (MgO). Step 3 : Elecrtophoretic deposition of YSZ particles and sintering. - RESULTS AND DISCUSSION : Electrophoretic deposition of (NiCoCrAlY) Electrolytic coating of the intermediate layer Electrophoretic deposition of YSZ and sintering DOI : 10.1007/s11998-010-9277-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9277-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11358 [article]

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Improvement of anticorrosive performance of phosphate-based alkyd paints with suitable additives / G. Blustein in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 171-181 Titre : Improvement of anticorrosive performance of phosphate-based alkyd paints with suitable additives Type de document : texte imprimé Auteurs : G. Blustein, Auteur ; C. Deyà, Auteur ; R. Romagnoli, Auteur ; A. R. di Sarli, Auteur ; Beatriz del Amo, Auteur Année de publication : 2011 Article en page(s) : p. 171-181 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Additifs Anticorrosifs Electrochimie Phosphates Pigments inorganiques Revêtements -- Additifs:Peinture -- Additifs Spectroscopie d'impédance électrochimique Index. décimale : 667.9 Revêtements et enduits Résumé : The purpose of this investigation was focused on reducing the content of zinc phosphate in anticorrosive paints by means of the incorporation of low quantities of selected soluble corrosion inhibitors. The article describes the anticorrosive behavior of alkyd paints containing reduced levels of zinc phosphate, zinc oxide, and some soluble compounds used as additives (e.g., sodium polyphosphate, sodium phosphate, and sodium benzoate). Anticorrosive solventborne alkyd paints were formulated with a zinc phosphate content of 10% by volume (v/v) with respect to the total pigment concentration. In all cases, the PVC/CPVC (pigment volume concentration/critical pigment volume concentration) ratio was 0.8. Experimental paints, applied on sandblasted SAE 1010 panels, were evaluated by accelerated tests (salt spray cabinet) and electrochemical measurements (electrochemical impedance spectroscopy, EIS). The results show that the additions of small amounts of soluble corrosion inhibitors to low content zinc phosphate paint formulations enhance their performance in a very remarkable way. Perhaps, the most outstanding feature is that the employment of soluble additives allowed the reduction of the zinc phosphate content with concomitant savings. Note de contenu : - EXPERIMENTAL SECTION : Composition manufacture, and application of paints - Anticorrosive performance evaluation of paint through accelerated tests (electrochemical tests) - RESULTS AND DISCUSSION : Salt spray test - Electrochemical impedance spectroscopy (equivalent circuits). DOI : 10.1007/s11998-010-9289-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9289-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11359 [article]

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Effect of TiO2-containing nano-coatings on the color protection of heat-treated jack pine / Saha Sudeshna in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 183-190 Titre : Effect of TiO2-containing nano-coatings on the color protection of heat-treated jack pine Type de document : texte imprimé Auteurs : Saha Sudeshna, Auteur ; Duygu Kocaefe, Auteur ; K. Sarkar, Auteur ; Yaman Boluk, Auteur ; André Pichette, Auteur Année de publication : 2011 Article en page(s) : p. 183-190 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Absorbeurs de rayonnement ultraviolet Bois -- Conservation Dioxyde de titane Essais accélérés (technologie) Résistance au rayonnement ultraviolet Revêtements Revêtements protecteurs Traitement thermique Index. décimale : 667.9 Revêtements et enduits Résumé : The UV protective coatings were developed by incorporating triazine derivative organic UV stabilizers into inorganic titania particles which were produced by sol–gel method. The objective of this study is to delay the color change of heat-treated wood subjected to outdoor conditions. The protective coatings were prepared in air at room temperature. The coatings were not further treated thermally after their application to heat-sensitive materials. Coatings were applied to heat-treated jack pine wood. Subsequently, accelerated aging tests were carried out using coated and uncoated jack pine samples. The color change of the wood samples was studied, and the results were compared. Also, the morphological analyses were done using XPS after having weathered the wood at different times. Note de contenu : - EXPERIMENTAL : Coating preparation - Optical investigation - Accelerated aging test - Color measurement - XPS analysis. - RESULTS : Transmittance of inorganic UV absorbing nano-coatings - Transmittance of organic UV absorber embedded in inorganic UV absorber - Accelerated aging of wood samples and color measurements - XPS analysis of the weathered wood samples DOI : 10.1007/s11998-010-9294-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9294-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11360 [article]

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Service life prediction of organic coatings: electrochemical impedance spectroscopy vs actual service life / Subrahmanya Shreepathi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 191-200 Titre : Service life prediction of organic coatings: electrochemical impedance spectroscopy vs actual service life Type de document : texte imprimé Auteurs : Subrahmanya Shreepathi, Auteur ; Akshay Kumar Guin, Auteur ; Shrikant M. Naik, Auteur ; Mohan Rao Vattipalli, Auteur Année de publication : 2011 Article en page(s) : p. 191-200 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Durée de vie (Ingénierie) Electrochimie Essais accélérés (technologie) Essais de brouillard salin Spectroscopie d'impédance électrochimique Index. décimale : 667.9 Revêtements et enduits Résumé : Electrochemical impedance spectroscopy (EIS) is used to derive an expression for predicting the service life of organic coating in a C4-type environment (industrial and costal areas with moderate salinity) as defined in ISO 12944 standard for paints and varnishes—corrosion protection of steel structures by protective paint systems. Three coating systems with a record of 2, 5, and 10 years of durability were selected for the study. The selection was also based on proven composition and dry film thickness (DFT) of the coatings as per ISO 12944. Electrochemical impedance measurements of the paint-coated panels were carried out by exposing the coated mild steel panels without scribe in different corrosive environments such as immersion in NaCl solution, neutral salt spray, etc. Neutral salt spray exposure was found to be the most severe corrosive environment among all the three coating systems. In most of the cases, EIS gave early indication of coating failure when compared to visual defects such as blistering and over-film corrosion. Note de contenu : - EXPERIMENTAL : System 1 : Low durable system for normal inland System 2 : Mdium durable system for coastal environment - RESULTS AND DISCUSSION : Exposure to immersion in 3.5 % NaCl Exposure to ASTM B117 (neutral salt spray) ASTM G85 (Prohesion cabinet test) ASTM D5894 (cyclic corrosion test) Immersionin 10 % HS2O4 and NaOH Service life prediction DOI : 10.1007/s11998-010-9299-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9299-5.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11361 [article]

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Performance of phosphate–alumina pigments in waterborne paints for protection of cold-rolled steel in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) Titre : Performance of phosphate–alumina pigments in waterborne paints for protection of cold-rolled steel Type de document : texte imprimé Année de publication : 2011 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alumine Anticorrosifs Core-Shell Phosphates Pigments inorganiques Revêtements en phase aqueuse:Peinture en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : Core–shell theory presents a new easy method to obtain high performance, economic, and eco-friendly anticorrosive mixed pigments. The core–shell pigments in this work are prepared by depositing a surface layer of an expensive efficient anticorrosive pigment (phosphates) on a bulk of less expensive extender pigment (alumina). The combination of these two compounds led to the production of new pigments with improved properties different from each of its individual components; and consequently these improved properties led to changing the efficiency of protection properties of paint films containing these new pigments. The new pigments were characterized using XRD, SEM, TEM, and EDAX analysis to elucidate their structure and prove the presence of phosphate ions on the surface of alumina. These pigments were also evaluated according to ASTM measurements. Then they were incorporated in three groups of emulsion paint formulations based on styrene acrylic emulsion copolymer, and comprising different concentrations of Zn, Mg, and 1Zn·1Mg phosphates/alumina core–shell pigments; in addition to a control formulation free of these pigments, to evaluate their efficiencies in anticorrosive paints for protection of cold-rolled steel. Chemical, physical, and mechanical measurements were carried out, besides corrosion resistance tests and weight loss of steel panels under paint films which were determined in 5% NaCl solution for 28 days. The results proved that the prepared formulations containing the prepared pigments could protect steel efficiently from corrosion compared to the control specimen. Groups II and III containing higher weight percentages of prepared pigments showed the best performance in corrosion protection, and the best performance among these two groups was paint films containing magnesium phosphate/alumina pigments. Note de contenu : - EXPERIMENTAL : Materials - Mmethods of instrumental analysis (SEM/EDAX analysis, transmission electron microscopy) - Preparation of pigments (Preparation of new core-shell pigments) - Preparation of waterborne paint formulations - Evaluation of the prepared waterborne paints ( Physico-mechanical and chemical evaluation of the prepared waterborne paints. - RESULTS AND DISCUSSION : Pigment characterization - Evaluation of prepared core-shell pigments - Waterborne paint formulations - Evaluation of the prepared waterborne paint formulations (Corrosion inhibition properties of the prepared waterborne - Weight loss determination of steel panels under waterborne paint films - Corrosion inhibition efficiency of paint formulations in presence of core-shell pigments). DOI : 10.1007/s11998-010-9288-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9288-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11363 [article]

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UV-waterborne polyurethane-acrylate nanocomposite coatings containing alumina and silica nanoparticles for wood : mechanical, optical, and thermal properties assessment / Caroline Sow in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 211-221 Titre : UV-waterborne polyurethane-acrylate nanocomposite coatings containing alumina and silica nanoparticles for wood : mechanical, optical, and thermal properties assessment Type de document : texte imprimé Auteurs : Caroline Sow, Auteur ; Bernard Riedl, Auteur ; Pierre Blanchet, Auteur Année de publication : 2011 Article en page(s) : p. 211-221 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alumine Bois -- Revêtements Matériaux hybrides Nanoparticules Polyacrylates Polyuréthanes Revêtements en phase aqueuse -- Séchage sous rayonnement ultraviolet:Peinture en phase aqueuse -- Séchage sous rayonnement ultraviolet Silice La silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux. La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...). Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale. Index. décimale : 667.9 Revêtements et enduits Résumé : The effect of alumina and silica nanoparticles on mechanical, optical, and thermal properties of UV-waterborne nanocomposite coatings was investigated. The addition of nanoalumina and nanosilica was shown to decrease the hardness because of nanoparticle aggregation. In comparison to the neat coating and despite the presence of aggregates, the scratch resistance of nanocomposite coatings was significantly improved. As expected, the gloss of UV-waterborne coatings was reduced following the addition of nanoparticles due to an increase of the surface roughness. Alumina and silica nanoparticles were found to enhance the glass transition temperature of PUA nanocomposite coatings by hindering the mobility of macromolecular chains at the interface around the nanoparticles. Finally, the interest and efficiency of grafting trialkoxysilanes was demonstrated with the study of nanosilica behavior. Not only was the dispersion of nanosilica enhanced following trialkoxysilanes grafting onto silica nanoparticles, but also the scratch resistance and the adhesion of UV-waterborne coatings containing nanosilica markedly increased even with 1 wt% content. Silica which is recommended in the wooden furniture and kitchen cabinet manufacturing industry as nano-reinforcement provides improved properties well suited in surface coating applications to efficiently protect surface of wood substrates. Note de contenu : - EXPERIMENTAL : Material - Preparation of UV-waterborne nanocomposite coatings - Characterization of UV-waterborne nanocomposite films (transmission electron microscopy - mechanical properties - optical properties - Thermal properties. - RESULTS AND DISCUSSION : Characterization of surface modified nanosilica powder - Morphology of UV-waterborne nanocomposite coatings (UV-curing proces of UV-waterborne coating formulations - Dispersion of nanoparticles in UV-waterborne coatings) - Effect of nanoparticle content on mechanical properties of UV-waterborne coatings (scratch resistance - Adhesion) - effect of nanoparticle content on appearance properties of UV-waterborne coatings - Effect of nanoparticle content on thermal properties of UV-waterborne coatings. DOI : 10.1007/s11998-010-9298-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9298-6.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11367 [article]

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Reflective properties of ZnS nanoparticle coatings / Sanjeev Kumar in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 223-228 Titre : Reflective properties of ZnS nanoparticle coatings Type de document : texte imprimé Auteurs : Sanjeev Kumar, Auteur ; N. K. Verma, Auteur ; M. L. Singla, Auteur Année de publication : 2011 Article en page(s) : p. 223-228 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Durée de vie (Ingénierie) Nanoparticules Réflectance Revêtements Sulfure de zinc Thioglycérol Index. décimale : 667.9 Revêtements et enduits Résumé : In the present paper, the authors report having developed highly reflective and durable coatings using synthesized zinc sulfide-capped thioglycerol nanoparticles. The coating material was prepared by dispersing ZnS/thioglycerol nanoparticles in an acrylic binder. The light reflectors were made applying this coating material to an aluminum substrate; their diffuse reflectance was measured and found to vary from 97% to 100% for 0.30-mm thick coating having 14% pigment-to-binder ratio. The aging effect of the reflectors with respect to temperature and illumination was also investigated to check their durability and they have been found to be optically stable up to 10,000 lux, and thermally up to 80°C. Note de contenu : - Synthesis of ZnS nanoparticles - Preparation of coating material - Preparation of reflectors - Characterization of nanoparticoles and their coatings DOI : 10.1007/s11998-010-9290-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9290-1.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11408 [article]

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Development of coating materials from liquid wax esters for wood top-based coating / Mohd Basyaruddin Abdul rahman in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 229-236 Titre : Development of coating materials from liquid wax esters for wood top-based coating Type de document : texte imprimé Auteurs : Mohd Basyaruddin Abdul rahman, Auteur ; Noraini Abdul Ghani, Auteur ; Nik Ghazali Nik Salleh, Auteur ; Mahiran Basri, Auteur ; Raja Noor Zaliha Abdul Rahman, Auteur ; Abu Bakar Salleh, Auteur Année de publication : 2011 Article en page(s) : p. 229-236 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Revêtements Cires Esters Formulation (Génie chimique) Huiles et graisses Réticulation (polymérisation) Index. décimale : 667.9 Revêtements et enduits Résumé : Of late, UV-curable products are gaining attention in the wood industry because of the effectiveness and efficiency of this method. UV-curable surface coatings are widely used because of their excellent properties and because they are environmentally friendly products. In this study, immobilized Candida antarctica lipase B was used to catalyze formation of liquid wax esters, such as adipate esters, via a solvent-free process. The adipate esters formed were then used as UV-curable reactants in the wood coating formulations, consisting of epoxy acrylate, additives, and a photoinitiator. The performance of the products was evaluated by coating them onto glass tiles (using gel content, hardness, and scratch resistance tests) and wood panels (using adhesion, impact, and heat resistance tests). The coated film from this formulation performed well during the evaluation tests. The gel content exhibited more than 90% polymerization, while the pendulum hardness gave a value of 55.25%. Both analyses were significant in determining the effect of irradiation cycles. A scratch test was also carried out to verify the resistance of the coating. The maximum weight load which can be resisted by the wax esters formulation is 4.5 N. Note de contenu : - Materials - Estefification assay - Formulation of wood coating - Mechanical properties : Performance test on glass tiles - Performance test on wood panels - Gel content. - Fourier transform infrared (FTIR) DOI : 10.1007/s11998-010-9291-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9291-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11409 [article]

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Reel-to-reel inline atmospheric plasma deposition of hydrophobic coatings / Kalle Nättinen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 237-245 Titre : Reel-to-reel inline atmospheric plasma deposition of hydrophobic coatings Type de document : texte imprimé Auteurs : Kalle Nättinen, Auteur ; Juha Nikkola, Auteur ; Hannu Minkkinen, Auteur ; Pirjo Heikkilä, Auteur ; Juho Lavonen, Auteur ; Mikko Tuominen, Auteur Année de publication : 2011 Article en page(s) : p. 237-245 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Hydrophobie Plasma à pression atmosphérique Un plasma à pression atmosphérique (ou plasma à PA ou plasma froid) est le nom donné à une catégorie spéciale de plasma pour lequel la pression approche celle de l’atmosphère. Le plasma à pression atmosphérique marque une nette différence avec le plasma basse et haute pression. En effet, contrairement à ces derniers aucune enceinte de traitement n'est nécessaire. Ce type de plasma peut donc être utilisé directement sur ligne de production, évitant ainsi l'utilisation de vide qui est extrêmement onéreuse. Revêtements Tags : 'Dépôt  plasma'  'Bobine  à  bobine'  Emballage  'Conversion  papier'  'Matériaux  fibreux' Index. décimale : 667.9 Revêtements et enduits Résumé : Plasma deposition equipment was developed and installed at a pilot extrusion coating line for reel-to-reel substrates. Hexamethyldisiloxane was used as a siloxane precursor for the atmospheric plasma deposition of siloxane coatings on substrates of three different categories: paper, polyethylene-coated paper, and textile materials (woven cotton fabric and polypropylene nonwoven). SEM, H2O contact angle measurements, heat sealability, and water vapor barrier measurements were carried out to characterize the composition and surface structure of the samples. The potential of the method and the equipment was shown by the coatings, ranging to micrometer scale. With selected samples, hydrophobic coating was shown to form at speeds up to 100 m/min. Note de contenu : EXPERIMENTAL - Materials - Methods - Characterization : SEM - AFM - FTIR (ATR) - Contact angle measurements - Heat sealability - Friction - Dyeability test - Barrier Properties. RESULTS AND DISCUSSION - Surface structure : SEM - AFM - FTIR (ATR) - Functional properties : Surface energy and hear sealability - Friction - Dyeing ability DOI : 10.1007/s11998-010-9292-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9292-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11410 [article]

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Elucidation of microstructure and wear behaviors of Ti-6Al-4V cladding usig tungsten boride powder by th GTAW method / Yuan-Ching Lin in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 247-253 Titre : Elucidation of microstructure and wear behaviors of Ti-6Al-4V cladding usig tungsten boride powder by th GTAW method Type de document : texte imprimé Auteurs : Yuan-Ching Lin, Auteur ; Yu-Chi Lin, Auteur Année de publication : 2011 Article en page(s) : p. 247-253 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Borure de tungstène Revêtement métallique Soudage par gaz inerte de tungstène Index. décimale : 667.9 Revêtements et enduits Résumé : Tungsten boride (WB) powder was used as a wear-resistance material, then clad on a Ti–6Al–4V substrate by the gas tungsten arc welding (GTAW) method. The titanium boride (TiB) reinforcing phase was formed in situ in the clad layer during the cladding process. Since the TiB and tungsten (W) reinforcing phase exist in the clad layer, the hardness of the clad layer is double that of the substrate. Wear test results reveal that the tribological performance of the WB-clad layer is superior to that of the Ti–6Al–4V substrate. This investigation also discusses the forming mechanism of the clad layer microstructure. Note de contenu : - Microstructual characteristics of tungtsten boride clad layers - wear behavior of tungsten boride clad layers DOI : 10.1007/s11998-010-9281-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9281-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11411 [article]

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Determination of epoxy coating wet-adhesive strength using a standardized ASTM/ISO scratch test / Han Jiang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 255-263 Titre : Determination of epoxy coating wet-adhesive strength using a standardized ASTM/ISO scratch test Type de document : texte imprimé Auteurs : Han Jiang, Auteur ; Robert Browning, Auteur ; Peng Liu, Auteur ; T. A. Chang, Auteur ; Hung-Jue Sue, Auteur Année de publication : 2011 Article en page(s) : p. 255-263 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion Eléments finis, Méthode des Epoxydes Essais (technologie) Rayures Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : A new approach for evaluating the wet-adhesive strength of epoxy-based coatings was carried out based on a recently standardized ASTM/ISO scratch test. A linearly increasing scratch normal load was applied during scratch to induce progressively increased delamination stress at the coating and steel substrate interface. Thus, the applied critical load to cause coating debonding can be experimentally determined. To find out the corresponding stress magnitude to incur coating debonding, finite element methods (FEM) modeling was conducted to analyze the stress fields around the scratch tip during scratching. The wet-adhesive strength is then quantitatively determined. Based on the above methodology, investigation on a set of model coating systems suggests that the critical load for coating delamination is significantly influenced by water exposure time, coating thickness, and substrate surface roughness. By combining the standardized scratch tests and FEM modeling, the proposed approach is found to be effective for quantitative assessment of epoxy coating wet-adhesive strength and for the development of high performance protective coatings for various industrial applications. Note de contenu : EXPERIMENTAL - Model coating systems - Sample water immersion conditioning - Determination of adhesive strength via scratch test - determination of critical load of coating debonding DETERMINATION OF COATING WET-ADHESIVE STRENGTH VIA FEM RESULTS AND DISCUSSION - Scratch test - Substrate surface roughness effect - Coating thickness effect - Coating wet-adhesive strength determination by FEM DOI : 10.1007/s11998-010-9296-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9296-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11413 [article]

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Study on the effect of ultrasonication time on transport properties of polyurethane/organoclay nanocomposite coatings / M. Heidarian in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 265-274 Titre : Study on the effect of ultrasonication time on transport properties of polyurethane/organoclay nanocomposite coatings Type de document : texte imprimé Auteurs : M. Heidarian, Auteur ; M. R. Shishesaz, Auteur ; S. M. Kassiriha, Auteur ; M. Nematollahi, Auteur Année de publication : 2011 Article en page(s) : p. 265-274 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Diffraction des rayons X à grand angle Electrochimie Matériaux hybrides Revêtements:Peinture Spectroscopie d'impédance électrochimique Ultrasons Index. décimale : 667.9 Revêtements et enduits Résumé : In this study, a series of polyurethane (PU)/organically modified montmorillonite (OMMT) clay nanocomposites were synthesized by in situ polymerization technique through an ultrasonication-assisted process at various processing times. Wide angle X-ray diffraction (WAXD) was employed to investigate the effect of processing time on degree of delamination of clay platelets. In order to evaluate the effect of ultrasonication time on transport properties of the PU/OMMT composites, diffusion coefficient and maximum water uptake were determined through a water permeation test. Electrochemical impedance spectroscopy (EIS) was carried out to analyze the barrier properties and to evaluate the corrosion performance of these composite coatings on carbon steel panels. It was found that by increasing sonication time, the barrier property of nanocomposites against diffusion of water molecules was improved. This is due to further separation of clay platelets and enhancement of the traveling pathways for water molecules. Note de contenu : EXPERIMENTAL - Materials - Nanocomposite preparation - Structural characterization of nanocomposites - Moisture permeation measurement - Electrochemical measurement of water uptake RESULTS AND DISCUSSION - Dispersion of organoclay in castor oil - X-ray diffraction analysis - Water permeation - Electrochemical impedance spectroscopy DOI : 10.1007/s11998-010-9297-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9297-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11417 [article]

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Ultrasonic nebulization-assisted layer-by-layer assembly for spray coating of multilayered, multicomponent, bioactive nanostructures / Skylar S. Stewart-Clark in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 275-281 Titre : Ultrasonic nebulization-assisted layer-by-layer assembly for spray coating of multilayered, multicomponent, bioactive nanostructures Type de document : texte imprimé Auteurs : Skylar S. Stewart-Clark, Auteur ; Yuri M. Lvov, Auteur ; David K. Mills, Auteur Année de publication : 2011 Article en page(s) : p. 275-281 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Assemblages (technologie) Dexaméthasone Dioxyde de titane Nanoparticules Pulvérisation cathodique Revêtements multicouches Index. décimale : 667.9 Revêtements et enduits Résumé : In this study, we describe a new technique for creating dense, stable, nanolayer coatings on solid substrates using ultrasonic nebulization. Nebulization-assisted layer-by-layer assembly (LbL) is a modification to the well-characterized LbL assembly method. The conventional method of producing electrostatically assembled multilayer films through sequential substrate dipping was compared to the nebulization method, and the resultant film characteristics were investigated. Varied coatings can be generated according to the alterations in deposition parameters, with the most influential being nebulizer distance and time. In addition to employment of polyelectrolytes (PEs), the nebulization method has been extrapolated to generate assemblies containing nanoparticles and a model drug, dexamethasone. It is shown that in comparison with conventional LbL, similar bilayers’ layering thicknesses can be achieved within a much smaller timeframe. Furthermore, PEs and more complex protein and nanoparticle assemblies can be incorporated to influence the surface topography and functionality. The potential to expeditiously assemble multicomponent films has far-reaching implications in many focus areas. Note de contenu : - MATERIALS AND METHODS : Preparation of PE, nanoparticle, protein, and drug solutions - Fabrication of multilayered substrates - Materials characterization. - RESULTS AND DISCUSSION : LbL netulized thin films functionalized with TiO2 and DEX (surface charge monitoring by ζ-potential - QCM studies - AFM study of film assembly. DOI : 10.1007/s11998-010-9304-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9304-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11429 [article]

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Syntheses of nano-multilayered TiN/TiSiN and CrN/CrSiN hard coatings / Jiang-Li Cao in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 283-288 Titre : Syntheses of nano-multilayered TiN/TiSiN and CrN/CrSiN hard coatings Type de document : texte imprimé Auteurs : Jiang-Li Cao, Auteur ; Kwang-Leong Choy, Auteur ; Hai-Lin Sun, Auteur ; Hui-Qing Li, Auteur ; Dennis Teer, Auteur ; Ming-Dong Bao, Auteur Année de publication : 2011 Article en page(s) : p. 283-288 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couches minces multicouches Matériaux hybrides Nanotechnologie Nitrures Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques Revêtements multicouches Index. décimale : 667.9 Revêtements et enduits Résumé : Nano-structured superhard coatings represent the state-of-the-art in the rapidly increasing worldwide market for protective coatings. In this study, the combination of nano-composite and nano-multilayered structures into the same coating was attempted. Nano-multilayered coatings of TiN/TiSiN and CrN/CrSiN were deposited on tool steel substrates by closed-magnetic-field unbalanced DC magnetron sputter ion plating. The coating structures were characterized using X-ray diffraction, atomic force microscopy, and scanning electron microscopy. Mechanical characterizations were performed including nano-hardness measurement, progressively-increasing-load scratch test, and wear test. TiN/TiSiN coatings have a nano-hardness of 40.2 GPa, whereas CrN/CrSiN coatings have a hardness of 30.9 GPa. TiN/TiSiN coatings also showed a higher critical failure force and scratch fracture toughness as well as better wear resistance and lower acoustic emission signal, indicating less total damage to the coatings. Note de contenu : - EXPERIMENTAL : Sample preparation - Characterization techniques - RESULTS AND DISCUSSION : Structural characterizations - Mechanical characterizations DOI : 10.1007/s11998-010-9275-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9275-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11430 [article]

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Ti substituted nano-crystalline Cu3N thin films / A. Rahmati in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 289-297 Titre : Ti substituted nano-crystalline Cu3N thin films Type de document : texte imprimé Auteurs : A. Rahmati, Auteur ; H. Bidadi, Auteur ; K. Ahmadi, Auteur ; F. Hadian, Auteur Année de publication : 2011 Article en page(s) : p. 289-297 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couches minces Matériaux nanocristallins Nitrure de cuivre Revêtement métallique Index. décimale : 667.9 Revêtements et enduits Résumé : Ti:Cu3N thin films were deposited on Si(111), quartz, and glass slide substrates by DC magnetron sputtering in molecular nitrogen ambient. The structural properties of Ti:Cu3N thin films were studied by X-ray diffraction (XRD) analysis. XRD measurements show diffraction band with peaks close to the (100) and (200) diffraction lines of cubic anti-ReO3 structure of Cu3N. The Ti:Cu3N nano-crystalline size is in the range 22–27 nm. Lattice constant expansion reflects Ti incorporation causing the excess nitrogen to occur. Surface morphology shows that the N richness suppresses the grain growth. The optical absorption spectra indicate a remarkable shift to higher energies of the absorption edge due to higher N concentration and quantum size effect. Photoluminescence (PL) measurement shows interstitial N excess and Ti impurity produce shallow and deep levels, respectively. Thermal stability of the Ti:Cu3N films annealed at 300 and 400°C is improved in comparison with that of Ti free Cu3N films. Note de contenu : Structural properties - Surface morphology - Chemical composition - Optical properties - Electrical properties - Thermal stability. DOI : 10.1007/s11998-010-9279-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9279-9.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11431 [article]

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