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On scratch testing of pressure-sensitive polymeric coatings / Fredrik Wredenberg in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 279-289 Titre : On scratch testing of pressure-sensitive polymeric coatings Type de document : texte imprimé Auteurs : Fredrik Wredenberg, Auteur ; Per-Lennart Larsson, Auteur Année de publication : 2010 Article en page(s) : p. 279-289 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Essais dynamiques Polymères Résistance à l'abrasion Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : Scratching of polymeric coatings on hard substrates is studied experimentally and numerically from a mechanical point of view. In particular, the behavior of local and global mechanical properties, as well as the delamination behavior, at scratching due to pressure-sensitive effects is of interest. The numerical investigation is performed using the finite element method (FEM) where pressure sensitivity is modeled using the classical Drucker-Prager plasticity model (Drucker, Prager, Q. Appl. Math., 10 157-165 (1952)) while the adhesion of the coating to the substrate is modeled as a cohesive zone where relevant model parameters are determined experimentally using the double cantilever beam test with uneven bending moments (DCB-UBM). Good correlation between experimental and numerical results were achieved and the most important finding concerns the fact that the dependence of pressure sensitivity proved to be different for different mechanical quantities. DOI : 10.1007/s11998-009-9202-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9202-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9808 [article]

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Fate of a coalescing aid after latex paint application / Leonardo A. Ramirez in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 291-300 Titre : Fate of a coalescing aid after latex paint application Type de document : texte imprimé Auteurs : Leonardo A. Ramirez, Auteur ; Howard M. Liljestrand, Auteur ; Richard L. Corsi, Auteur Année de publication : 2010 Article en page(s) : p. 291-300 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Revêtements Tags : Peinture  Emissions  Coalescence  'Panneau  de  gypse'  '2,2,4-Triméthyl-1,3-pentanediol  monoisobutyrate' Index. décimale : 667.9 Revêtements et enduits Résumé : Water-based coatings require coalescing aids to achieve properties equivalent to solvent-borne paints. A common coalescing aid in latex paints is 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate (TMPD-MIB). The relatively large quantity of TMPD-MIB used in latex paints has raised concerns regarding its emissions to both indoor and outdoor atmospheres. In this study, a one-dimensional dual (paint and material) layer diffusion model was developed to estimate emissions of TMPD-MIB from two latex paints applied to gypsum board. The paints contained different pigment volume concentrations (PVC) and different amounts of TMPD-MIB. Different modeling approaches were used depending on the PVC of the paint. The proposed model for paint drying and TMPD-MIB emissions was tested with data from previous chamber experiments. Experimental data were first used for purposes of parameter estimation, and the model was then compared against an independent experimental dataset. The diffusion coefficient of the paint layer was adjusted as a function of the water content remaining in the wet paint film. The effective diffusion coefficient of TMPD-MIB in the paint layer was found to be dependent on the PVC and water content of the paint. DOI : 10.1007/s11998-009-9194-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9194-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9809 [article]

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Effect of particles sizes and pigment volume concentrations on the barrier properties of polyurethane coatings / Fuchun Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 301-313 Titre : Effect of particles sizes and pigment volume concentrations on the barrier properties of polyurethane coatings Type de document : texte imprimé Auteurs : Fuchun Liu, Auteur ; Lihong Yang, Auteur ; Enhou Han, Auteur Année de publication : 2010 Article en page(s) : p. 301-313 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chlorure de polyvinyle Concentration pigmentaire volumique Dioxyde de titane Polyuréthanes Revêtements Spectroscopie d'impédance électrochimique Taille des particules Index. décimale : 667.9 Revêtements et enduits Résumé : The barrier properties of Fe2O3/polyurethane coatings containing 60-nm and 150-nm Fe2O3 particles with different pigment volume concentrations (PVCs) were investigated by electrochemical impedance spectroscopy and accelerated salt spray tests. The results indicate that the addition of 60-nm Fe2O3 can significantly improve the barrier properties of a coating, while 150-nm Fe2O3. has little effect. The 0.2% PVC 60-nm Fe203 coating had significantly improved protection. DOI : 10.1007/s11998-009-9203-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9203-3.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9810 [article]

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Spin coating of Blu-Ray disks : modeling, experiments, limitations, and manipulation / Outi Tammisola in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 315-323 Titre : Spin coating of Blu-Ray disks : modeling, experiments, limitations, and manipulation Type de document : texte imprimé Auteurs : Outi Tammisola, Auteur ; Fredrik Lundell, Auteur ; Georg Hellström, Auteur ; Torgny Lagerstedt, Auteur Année de publication : 2010 Article en page(s) : p. 315-323 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Revêtements:Peinture Tags : 'Revêtement  spin'  'Disque  blu-ray' Index. décimale : 667.9 Revêtements et enduits Résumé : A major challenge in the production of Blu-Ray Disks (BDs) is making the cover layer over the information area. The layer has to be both thick enough to protect the information and even enough for the information to be read through it optically. Furthermore, it is preferred not to cover the hole in the center of the disk. Spin coating is a candidate method for the production of these layers in a rapid reproduction process. When dispensing is performed off-center (in order not to cover the hole), a new complication appears, namely the formation of a slope toward the inner rim of the liquid film. Here, fundamental limitations for achieving even films in this system and ways to overcome the difficulties by manipulation of the process are studied. A mathematical model for this particular case of spin coating is obtained and validated by comparison with experiments made in industrial equipment aiming at producing BDs. The model agrees well with the experimental data. The model is then used to show that cover layers that fulfil the Blu-Ray specification are very difficult to produce with the spin-coating technique. Manipulation by inline curing and surface shear is added to the model and the results show that it is considerably easier to meet the BD specification when utilizing the manipulation. DOI : 10.1007/s11998-009-9204-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9204-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9811 [article]

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The application of x-ray powder diffraction for the analysis of synthetic organic pigments. Part 2 : artists' paints / Suzanne Quillen Lomax in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 325-330 Titre : The application of x-ray powder diffraction for the analysis of synthetic organic pigments. Part 2 : artists' paints Type de document : texte imprimé Auteurs : Suzanne Quillen Lomax, Auteur Année de publication : 2010 Article en page(s) : p. 325-330 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Diffractométrie de rayons X Liants Pigments organiques Revêtements Index. décimale : 667.9 Revêtements et enduits Résumé : Over 50 commercial paints were examined by x-ray powder diffraction in order to try and identify the synthetic organic pigments present. The binders included acrylic, oil, gum, and alkyd. Some pigments could be identified, though analysis is often complicated by the presence of large amounts of fillers and extenders in the paints relative to the small quantities of the pigment. A few of the paints did not have reflections due to fillers or extenders but the pigments could still not be identified. The best success in identifying the pigments was with acrylic binders, where the pigments could be identified in more than half of the samples examined, and with alkyds, where the pigment could frequently be identified. However, other binders, especially oil and gum, contain so many fillers that the pigment reflections are obscured. X-ray powder diffraction, therefore, is of limited utility in the identification of synthetic organic pigments in paints. DOI : 10.1007/s11998-009-9205-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9205-1.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9812 [article]

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Limitations of classical methods for measuring surface tension in visco-elastic liquids / A. Bochkarev in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 347-353 Titre : Limitations of classical methods for measuring surface tension in visco-elastic liquids Type de document : texte imprimé Auteurs : A. Bochkarev, Auteur ; M. Hartman, Auteur ; K. Olson, Auteur Année de publication : 2010 Article en page(s) : p. 347-353 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Elasticité Revêtements:Peinture Tension superficielle Viscoélasticité Index. décimale : 667.9 Revêtements et enduits Résumé : The surface tension of a water/detergent mixture and a visco-elastic waterborne paint sample were measured using the classical ring method in which a thin free liquid film (lamella) is formed between the ring and the parent liquid. Lamella tension was measured during the stretching of the lamella. Measurements of water/surfactant mixtures have shown essentially classical behavior of lamella tension (independence of tension on deformation). Measurements of a waterborne paint formulation, however, have shown that after stretching of the lamella, the lamella tension decreases. The lamella tension of the paint sample increases after contraction of the lamella. Comparison of experimental results with rheological properties of the paint have shown that bulk visco-elastic properties of liquid are found in both the bulk sample and the lamella. The conclusion is that for the study of surface properties of visco-elastic liquids such as waterborne paints, the applicability of classical methods is limited. Therefore, it was necessary to develop new methods and approaches to study the properties of these materials. These methods are described in this paper. DOI : 10.1007/s11998-009-9193-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9193-1.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9813 [article]

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Replacement of traditional seawater-soluble pigments by starch and hydrolytic enzymes in polishing antifouling coatings / S. M. Olsen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 355-363 Titre : Replacement of traditional seawater-soluble pigments by starch and hydrolytic enzymes in polishing antifouling coatings Type de document : texte imprimé Auteurs : S. M. Olsen, Auteur ; L. T. Pedersen, Auteur ; Kim Dam-Johansen, Auteur ; J. B. Kristensen, Auteur ; Søren Kiil, Auteur Année de publication : 2010 Article en page(s) : p. 355-363 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Amidons Enzymes Une enzyme est une protéine dotée de propriétés catalytiques. Pratiquement toutes les biomolécules capables de catalyser des réactions chimiques dans les cellules sont des enzymes ; certaines biomolécules catalytiques sont cependant constituées d'ARN et sont donc distinctes des enzymes : ce sont les ribozymes. Une enzyme agit en abaissant l'énergie d'activation d'une réaction chimique, ce qui accroît la vitesse de réaction. L'enzyme n'est pas modifiée au cours de la réaction. Les molécules initiales sont les substrats de l'enzyme, et les molécules formées à partir de ces substrats sont les produits de la réaction. Presque tous les processus métaboliques de la cellule ont besoin d'enzymes pour se dérouler à une vitesse suffisante pour maintenir la vie. Les enzymes catalysent plus de 5 000 réactions chimiques différentes2. L'ensemble des enzymes d'une cellule détermine les voies métaboliques qui peuvent avoir lieu dans cette cellule. L'étude des enzymes est appelée enzymologie. Les enzymes permettent à des réactions de se produire des millions de fois plus vite qu'en leur absence. Un exemple extrême est l'orotidine-5'-phosphate décarboxylase, qui catalyse en quelques millisecondes une réaction qui prendrait, en son absence, plusieurs millions d'années3,4. Comme tous les catalyseurs, les enzymes ne sont pas modifiées au cours des réactions qu'elles catalysent, et ne modifient pas l'équilibre chimique entre substrats et produits. Les enzymes diffèrent en revanche de la plupart des autres types de catalyseurs par leur très grande spécificité. Cette spécificité découle de leur structure tridimensionnelle. De plus, l'activité d'une enzyme est modulée par diverses autres molécules : un inhibiteur enzymatique est une molécule qui ralentit l'activité d'une enzyme, tandis qu'un activateur de cette enzyme l'accélère ; de nombreux médicaments et poisons sont des inhibiteurs enzymatiques. Par ailleurs, l'activité d'une enzyme décroît rapidement en dehors de sa température et de son pH optimums. Glucose Lixiviation Pigments Polissage Revêtements antisalissures:Peinture antisalissures Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : The use of starch and hydrolytic enzymes as replacement for traditional polishing pigments (e.g., Cu2O and ZnO) in antifouling coatings has been investigated. The enzymes facilitate a slow conversion of water-insoluble starch into water-soluble glucose, and dissolution of glucose causes the development of a leached (porous) layer in the wetted, outermost part of the coating. Subsequent water–binder interaction at the pore walls gives rise to polishing, in a manner similar to that of conventional antifouling coatings. Different starch types have been evaluated and classified as potential coating ingredients, and the impact of the addition of starch on the functional properties of the coating is described. Starches from rice, corn, and tapioca have been tested, and due to a smaller amount of water-soluble content and lesser tendency to agglomerate, corn starch is preferred. Leaching occurs in all the starch-enzyme coatings tested; however, polishing is only detected for two out of four binder systems investigated. Suitable polishing rates of 7–10 μm/month, based on the enzymatic starch-degradation, have been measured. Controls containing only starch (no enzyme) did not polish. DOI : 10.1007/s11998-009-9191-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9191-3.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9814 [article]

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Preparation of thin film alloys with electrodeposition from heterotrinuclear M1–M2–M1 complexes (M1: NiII, CuII; M2: CuII, CoII, ZnII, CdII) / Ece Düzgün in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 365-371 Titre : Preparation of thin film alloys with electrodeposition from heterotrinuclear M1–M2–M1 complexes (M1: NiII, CuII; M2: CuII, CoII, ZnII, CdII) Type de document : texte imprimé Auteurs : Ece Düzgün, Auteur ; Ãœmit Ergun, Auteur ; Filiz Ercan, Auteur ; Murat Sert, Auteur ; M. Levent Aksu, Auteur ; Orhan Atakol, Auteur Année de publication : 2010 Article en page(s) : p. 365-371 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alliages Dépôt électrolytique Electrolyse Voltampérométrie Index. décimale : 667.9 Revêtements et enduits Résumé : M1 II–M2 II–M1 II type linear complexes (where M1 = Ni2+, Cu2+ and M2 = Cu2+, Zn2+, Co2+ and Cd2+ were prepared and dissolved in dimethyl sulfoxide. They were then electrodeposited on mild steel surfaces by the use of rotating disc electrodes. The deposition potentials were determined from cyclic voltammetric i-E scans. The metal films deposited on mild steel surfaces were characterized with atomic absorption spectrometer (AAS), X-ray fluorescence (XRF) and ion chromatography (IC) methods. Although the stoichiometric quantity of M2 metal cation was half of the M1 metal cation in the complex, the amount of M2 metal deposited upon the surface was markedly greater. The amount of M2 ion deposited on the surface was found to increase with the hardness of the ion. The X-ray diffraction (XRD) patterns showed that the excessively deposited metal on the surface was in metallic form as well as alloy. The size of the deposited film particles was investigated by the use of atomic force microscope (AFM) technique and the particles were observed to be bigger than nanoparticle size. DOI : 10.1007/s11998-009-9188-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9188-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9815 [article]

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Crosslinked polyurethane–epoxy hybrid emulsion with core–shell structure / Wen Xiufang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 373-381 Titre : Crosslinked polyurethane–epoxy hybrid emulsion with core–shell structure Type de document : texte imprimé Auteurs : Wen Xiufang, Auteur ; Ruilian Mi, Auteur ; Huang Ying, Auteur ; Jiang Cheng, Auteur ; Pi Pihui, Auteur ; Zuohru Yang, Auteur Année de publication : 2010 Article en page(s) : p. 373-381 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Epoxydes Polyuréthanes Réticulation (polymérisation) Revêtements en phase aqueuse:Peinture en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : An epoxy resin was used to prepare crosslinked polyurethane hybrid emulsion through the blocked NCO prepolymer mixing process. Due to their hydrophobicity, the amine chain extender, blocked –NCO, and epoxy are located inside the emulsion particles. Thus, the crosslinking reaction occurs mostly in the interior of the particles. In this way, the crosslinking density of the resin is increased without the use of solidifying agents or heating during film formation, and the stability of the emulsions remains uninfluenced. The effects of the type of amine chain extender and the type, dosage, and addition mode of the epoxy resin were studied in terms of mechanical properties and swelling properties in water and toluene of the cast films. Additionally, the stability of the single-pack hybrid emulsion was studied. The results showed that the sample prepared with diethylene triamine had good stability, chemical resistance, and high mechanical strength. The modulus and water resistance of the films increased with the epoxy resin content, which could reach 20 wt %. The type of amine chain extender affected the stability of the emulsions significantly. The molar ratio of NH/NCO at 1:1 led to the best film performance. The optimal temperature of the chain-extension reaction was approximately 80°C. The hybrid emulsions could be stored for at least 6 months without apparent performance changes. DOI : 10.1007/s11998-009-9196-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9196-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9816 [article]

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The effect of intermediate layer on synthesis and gas permeation properties of NaA zeolite membrane / Nandini Das in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 383-390 Titre : The effect of intermediate layer on synthesis and gas permeation properties of NaA zeolite membrane Type de document : texte imprimé Auteurs : Nandini Das, Auteur ; Debtosh Kundu, Auteur ; Minati Chatterjee, Auteur Année de publication : 2010 Article en page(s) : p. 383-390 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couches minces Gaz -- Séparation Revêtements:Peinture Zéolites Index. décimale : 667.9 Revêtements et enduits Résumé : NaA zeolite membrane coating was successfully synthesized on an alumina porous disc by hydrothermal treatment. The effects of synthesis parameters, such as seeding condition (in situ, ex situ), synthesis time, synthesis stages, application of intermediate layer, etc., on membrane characteristics were investigated. Surface seeding accelerates the zeolite crystallization process on the support surface, and also enhances the formation of homogeneous NaA zeolite layer. But the main problem associated with membrane coating synthesis is crack formation. Formation of crack was reduced by applying intermediate layer, between the support surface and seed layer. A thin Boehmite layer was applied to the support surface before applying seed crystals to enhance the adherence between zeolite seed layer and boehmite layer by hydrogen bonding and also to increase the mechanical strength of the membrane layer. The quality of the membrane layer can be improved by employing the multi-stage coating methods. The permeance of O2, N2 decreased as kinetic diameter of gases increased, which shows the molecular sieving effect of the NaA membrane. The permselectivity of O2/N2 was 1.9–2.0. This value of permselectivity ratio is higher than Knudsen diffusion ratio 0.94; it was also confirmed the molecular sieving properties of synthesized NaA zeolite membrane. DOI : 10.1007/s11998-009-9195-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9195-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9817 [article]

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Interfacial adhesion measurement of a ceramic coating on metal substrate / Pulin Nie in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 391-398 Titre : Interfacial adhesion measurement of a ceramic coating on metal substrate Type de document : texte imprimé Auteurs : Pulin Nie, Auteur ; Heping Lv, Auteur ; Tao Zhou, Auteur ; Xun Cai, Auteur ; Paul K. Chu, Auteur Année de publication : 2010 Article en page(s) : p. 391-398 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion Eléments finis, Méthode des Interfaces (Sciences physiques) Mesures physiques Revêtements:Peinture Tags : 'Adhésion  interfaciale'  Revêtement  'Recourbement  trois  points'  'Taux  rejets  énergie'  'Analyse  éléments  finis' Index. décimale : 667.9 Revêtements et enduits Résumé : The interfacial adhesion measurement of a ceramic coating on a metal substrate is studied by three-point bending (3PB) technique. In the measurement, interfacial cracks are induced during the 3PB test, and the interfacial energy release rate is calculated from the released energy per unit crack surface area during crack extension under the fixed displacement conditions. A finite element analysis (FEA) model encompassing the plastic behavior of the metal substrate is developed to simulate the 3PB test and extract the energy data. The inputs to the FEA model include the crack length, the maximum and critical loads corresponding to crack initiation, and the mechanical properties of the coating and substrate. A MoB/CoCr ceramic coating/stainless steel substrate system is investigated by the technique for demonstrating the utility of the technique. DOI : 10.1007/s11998-009-9192-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9192-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9818 [article]

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Optimization of sintering temperature in CdZnS films using reflection spectroscopy / Vipin Kumar in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 399-402 Titre : Optimization of sintering temperature in CdZnS films using reflection spectroscopy Type de document : texte imprimé Auteurs : Vipin Kumar, Auteur ; Soniya Juneja, Auteur ; Sachin K. Sharma, Auteur ; V. Singh, Auteur ; V. P. Sharma, Auteur Année de publication : 2010 Article en page(s) : p. 399-402 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couches minces Précipitation (chimie) Revêtements:Peinture Semiconducteurs Spectroscopie de réflectance Index. décimale : 667.9 Revêtements et enduits Résumé : In the present investigation, the polycrystalline films of Cd X Zn1–X S were prepared using a sintering technique. We coated slurry consisting of CdS, ZnS in the desired proportion—CdCl2 (as adhesive) and ethylene glycol (as binder)—onto the glass substrates. The films were sintered at a range of temperatures in air atmosphere for the optimization of sintering temperatures using reflection spectroscopy. It was noticed that below 500°C, CdS-dominated films were obtained, and above 500°C, ZnS-dominated films were obtained. The films of desired composition giving appropriate results are obtained at 500°C. The reason is easily understood through reflection spectroscopic studies. Thus, we found 500°C to be the optimum sintering temperature and 10 min was the proper sintering time. DOI : 10.1007/s11998-009-9224-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9224-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9819 [article]

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Microstructure and mechanical properties of hafnium carbide coatings synthesized by reactive magnetron sputtering / Li Guanqun in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 403-407 Titre : Microstructure and mechanical properties of hafnium carbide coatings synthesized by reactive magnetron sputtering Type de document : texte imprimé Auteurs : Li Guanqun, Auteur ; Geyang Li, Auteur Année de publication : 2010 Article en page(s) : p. 403-407 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Carbure d'hafnium Magnétron Microstructures Pulvérisation cathodique Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : Hafnium carbide coatings with different carbon contents were synthesized in Ar–C2H2 mixture by reactive magnetron sputtering. Energy-dispersive X-ray, X-ray diffraction, scanning electron microscopy, atomic force microscopy, and nanoindentation were employed to characterize their microstructure and mechanical properties. The effects of C2H2 partial pressure on the composition, phase, microstructure, and mechanical properties of the coatings were investigated. The results show that hafnium carbide coatings can be synthesized at a low partial pressure of C2H2. The single-phase HfC coating with columnar crystal and favorable mechanical properties is obtained when the proportion of C2H2 partial pressure is only about 3.0% in the mixture, and the highest hardness and modulus are 27.9 and 255 GPa, respectively. The coating contains metal Hf and HfC phases and obtains low hardness under lower C2H2 partial pressure. When the C2H2 partial pressure is higher, the hardness and elastic moduli of acquired amorphous coatings decrease significantly. DOI : 10.1007/s11998-009-9225-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9225-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9820 [article]

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The application of x-ray powder diffraction for the analysis of synthetic organic pigments. Part 1: dry pigments / Suzanne Quillen Lomax in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 3 (05/2010) . - p. 331-346 Titre : The application of x-ray powder diffraction for the analysis of synthetic organic pigments. Part 1: dry pigments Type de document : texte imprimé Auteurs : Suzanne Quillen Lomax, Auteur Année de publication : 2010 Article en page(s) : p. 331-346 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Diffractométrie de rayons X Phtalocyanine de cuivre Pigments organiques Polymorphisme (cristallographie) Quinacridone Les pigments de quinacridone sont des pigments organiques de synthèses qui vont du rouge-orange au rouge-violet. Ils sont utilisés depuis les années 1960 par les teinturiers et les fabricants de pigment set couleurs à peindre (et plus récemment par certains tatoueurs, comme pigment dans des encres de tatouage, avec un risque allergique). Il s'agit de pigments très transparents, au fort pouvoir colorant mais modérément couvrants. Leur transparence permet de varier les teintes selon la densité et l'épaisseur de l'application. Index. décimale : 667.9 Revêtements et enduits Résumé : This paper presents x-ray powder diffraction data for over 200 synthetic organic pigments. These pigments, most manufactured in the last 130 years, are frequently found in modern works of art. Their identification is of interest in the field of art conservation for the purposes of dating works of art as well as making conservators and curators aware of issues with lightfastness and solubility. Most classes of these pigments, including β-naphthol, Naphthol AS, mono- and di-arylide yellows, quinacridones, copper phthalocyanines, benzimidazolones, and perylenes give good diffraction data. Some pigments, including certain triarylcarbonium and some other metal containing pigments, especially aluminum containing pigments, were found not to diffract. X-ray powder diffraction is of great use in distinguishing polymorphs of pigments such as quinacridones and copper phthalocyanines. DOI : 10.1007/s11998-009-9206-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9206-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9821 [article]

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