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JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH . Vol. 6, N° 2Mention de date : 06/2009Paru le : 28/05/2009 |
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Ajouter le résultat dans votre panierAnticorrosive coatings / P. A. Sorensen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Anticorrosive coatings : a review Type de document : texte imprimé Auteurs : P. A. Sorensen, Auteur ; Claus Erik Weinell, Auteur ; Kim Dam-Johansen, Auteur ; Søren Kiil, Auteur Année de publication : 2009 Article en page(s) : p. 135-176 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Liants
PigmentsIndex. décimale : 667.9 Revêtements et enduits Résumé : The main objective of this review is to describe some of the important topics related to the use of marine and protective coatings for anticorrosive purposes. In this context, "protective" refers to coatings for containers, offshore constructions, wind turbines, storage tanks, bridges, rail cars, and petrochemical plants while "marine" refers to coatings for ballast tanks, cargo holds and cargo tanks, decks, and engine rooms on ships. The review aims at providing a thorough picture of state-of-the-art in anticorrosive coatings systems. International and national legislation aiming at reducing the emission of volatile organic compounds (VOCs) have caused significant changes in the anticorrosive coating industry. The requirement for new VOC-compliant coating technologies means that coating manufacturers can no longer rely on the extensive track record of their time-served products to convince consumers of their suitability for use. An important aspect in the development of new VOC-compliant, high-performance anticorrosive coating systems is a thorough knowledge of the components in anticorrosive coatings, their interactions, their advantages and limitations, as well as a detailed knowledge on the failure modes of anticorrosive coatings. This review, which mainly deals with European experience and practice, includes a description of the different environments an anticorrosive coating system may encounter during service. In addition, examples of test methods and standards for determination of the performance and durability of anticorrosive coatings have been included. The different types of anticorrosive coatings are presented, and the most widely applied generic types of binders and pigments in anticorrosive coatings are listed and described. Furthermore, the protective mechanisms of barrier, sacrificial, and inhibitive coatings are outlined. In the past decades, several alternatives to organic solvent-borne coatings have reached the commercial market. This review also presents some of these technologies and discusses some of their advantages and limitations. Finally, some of the mechanisms leading to degradation and failure of organic coating systems are described, and the reported types of adhesion loss are discussed. DOI : 10.1007/s11998-008-9144-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9144-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5602
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible UV-cured coatings based on waterborne resins ans Si02 nanoparticles / Anna di Gianni in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : UV-cured coatings based on waterborne resins ans Si02 nanoparticles Type de document : texte imprimé Auteurs : Anna di Gianni, Auteur ; Stefano Turri, Auteur ; Roberta Bongiovanni, Auteur ; Flavio Deflorian, Auteur ; Giulio Malucelli, Auteur ; Giancarlo Rizza, Auteur Année de publication : 2009 Article en page(s) : p. 177-185 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Corrosion
Dioxyde de silicium
Nanoparticules
Photopolymères
Polymérisation
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements en phase aqueuse:Peinture en phase aqueuse
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : The UV-curing technique in combination with the use of waterborne resins is very attractive since it gives the opportunity to get solid coatigs by means of ecofriendly processes. We found that it is possible to use such UV curable water-based formulations as matrices for the preparation of nanocomposites in which the filler is generated in situ by means of the sol-gel chemistry. We prepared silica-based nanocomposites and characterized ther comparing their performances with those of the silica-free coatings. Moreover, the article discusses the influence of the addition of a coupling agent between the organic and inorganic phase on the final properties of the nanocomposites. DOI : 10.1007/s11998-008-9137-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9137-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5603
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Inorganic precursor peroxides for antifouling coatings / S. M. Olsen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Inorganic precursor peroxides for antifouling coatings Type de document : texte imprimé Auteurs : S. M. Olsen, Auteur ; L. T. Pedersen, Auteur ; M. H. Hermann, Auteur ; Søren Kiil, Auteur ; Kim Dam-Johansen, Auteur Année de publication : 2009 Article en page(s) : p. 187-199 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Peroxyde d'hydrogène Le peroxyde d'hydrogène (H2O2), communément appelé eau oxygénée ou encore perhydrol (appellation industrielle), est un composé chimique liquide et visqueux, aux puissantes propriétés oxydantes (il est aussi réducteur). C'est donc un agent blanchissant efficace qui sert de désinfectant et (à haute concentration) d'oxydant ou monergol dans les fusées spatiales.
Pigments
Revêtements antisalissures:Peinture antisalissures
Salissures biologiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Modern antifouling coatings are generally based on cuprous oxide (Cu2O) and organic biocides as active ingredients. Cu2O is prone to bioaccumulation, and should therefore be replaced by more environmentally benign compounds when technically possible. However, cuprous oxide does not only provide antifouling properties, it is also a vital ingredient for the antifouling coating to obtain its polishing and leaching mechanism. In this paper, peroxides of strontium, calcium, magnesium, and zinc are tested as pigments in antifouling coatings. The peroxides react with seawater to create hydrogen peroxide and highly seawater-soluble ions of the metal. The goals have been to establish the antifouling potency of an antifouling coating that releases hydrogen peroxide as biocide, and to investigate the potential use of peroxides as water-soluble polishing and leaching pigments. The investigations have shown that it is possible to identify particulates that, when applied as pigments in antifouling coatings, will provide polishing and leaching rates comparable to those of Cu2O-based coatings. Furthermore, the combination of polishing and hydrogen peroxide leaching by a coating based on zinc peroxide in a suitable binder matrix provides antifouling properties exceeding those of a similar coating based entirely on zinc oxide. DOI : 10.1007/s11998-008-9143-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9143-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5604
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Advanced chrome-free organic-inorganic hybrid pretreatments for aerospace aluminum alloy 2024-T3 application of novel bis-ureasil sol-gel precursors / Vinod Kakde in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Advanced chrome-free organic-inorganic hybrid pretreatments for aerospace aluminum alloy 2024-T3 application of novel bis-ureasil sol-gel precursors Type de document : texte imprimé Auteurs : Vinod Kakde, Auteur ; Vijay M. Mannari, Auteur Année de publication : 2009 Article en page(s) : p. 201-211 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aluminium L'aluminium est un élément chimique, de symbole Al et de numéro atomique 13. C’est un métal pauvre, malléable, de couleur argent, qui est remarquable pour sa résistance à l’oxydation13 et sa faible densité. C'est le métal le plus abondant de l'écorce terrestre et le troisième élément le plus abondant après l'oxygène et le silicium ; il représente en moyenne 8 % de la masse des matériaux de la surface solide de notre planète. L'aluminium est trop réactif pour exister à l'état natif dans le milieu naturel : on le trouve au contraire sous forme combinée dans plus de 270 minéraux différents, son minerai principal étant la bauxite, où il est présent sous forme d’oxyde hydraté dont on extrait l’alumine. Il peut aussi être extrait de la néphéline, de la leucite, de la sillimanite, de l'andalousite et de la muscovite.
L'aluminium métallique est très oxydable, mais est immédiatement passivé par une fine couche d'alumine Al2O3 imperméable de quelques micromètres d'épaisseur qui protège la masse métallique de la corrosion. On parle de protection cinétique, par opposition à une protection thermodynamique, car l’aluminium reste en tout état de cause très sensible à l'oxydation. Cette résistance à la corrosion et sa remarquable légèreté en ont fait un matériau très utilisé industriellement.
L'aluminium est un produit industriel important, sous forme pure ou alliée, notamment dans l'aéronautique, les transports et la construction. Sa nature réactive en fait également un catalyseur et un additif dans l'industrie chimique ; il est ainsi utilisé pour accroître la puissance explosive du nitrate d'ammonium.
Matériaux hybrides
Revêtements protecteurs
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : Effective pretreatment of aluminum alloys is very critical to success of protective coating systems for aerospace applications. While chromate-based pretreatments have been very successful for corrosion protection, they have been a target for replacement due to the increasingly stricter regulatory requirements arising from toxicity and carcinogenic nature of Cr(VI) used in such pretreatments. Among many approaches to develop alternative systems, the organic-inorganic hybrid (OIH) coatings based on sol-gel technology has advanced rapidly. We have successfully developed OIH coating systems by using suitably tailored organo-silane precursors and sol-gel processing conditions. A series of novel bis-ureasil precursors have been developed and employed as organic precursor of OIH systems. Statistical design of experimental methodology (DoE) has been used to study and optimize compositional and process parameters using multifactor analysis of variance (ANOVA) analysis method. The corrosion resistance study (Potentiodynamic polarization, salt-spray corrosion test) shows that by proper choice of sol-gel precursors, cross-linkers, and reaction conditions, very dense, adherent and protective hybrid coatings, comparable in performance to chromate-based ones, can be obtained for aerospace aluminum alloy 2024-T3. DOI : 10.1007/s11998-008-9142-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9142-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5605
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Evaluation of the atmospheric corrosion resistance of AISI A-36 steel painted with coatings based on epoxy and poly(urethane) resins using semi-accelerated testing / E. M. Oliveira in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Evaluation of the atmospheric corrosion resistance of AISI A-36 steel painted with coatings based on epoxy and poly(urethane) resins using semi-accelerated testing Type de document : texte imprimé Auteurs : E. M. Oliveira, Auteur ; J. R. G. Carneiro, Auteur ; V. F. Cunha Lins, Auteur Année de publication : 2009 Article en page(s) : p. 213-219 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.
Corrosion
Epoxydes
Essais accélérés (technologie)
Métaux -- Revêtements protecteurs
Polyuréthanes
Revêtements
Revêtements:PeintureIndex. décimale : 667.9 Revêtements et enduits Résumé : The influence of temperature, humidity, salinity, and the number of wet-dry cycles in the atmospheric corrosion resistance of the AISI A-36 steel, painted with coatings based on epoxy and poly(urethane) resins was studied. The aim of this work is to present an alternative to the accelerated and field tests developing a semi-accelerated test for evaluating the resistance and durability of a protection system that is applied to a specific environment for one year. The samples were exposed in a corrosion cyclic test chamber for 2000 h with fixed parameters of temperature, relative moisture of air, salinity, and a number of dry-wet cycles. Mass loss of substrate in the scratch area was measured after each 250 h of testing. The second stage of research was the sensibility analysis of the corrosion rate with the change of the reference test parameters. The third stage was the testing of the samples using the cyclic test for 750 h, and the transfer of samples to a marine atmosphere exposure for one year. The mass loss was measured after each 60-day period of testing. Material characterization involved scanning electron microscopy, X-ray diffraction, energy dispersive spectroscopy, Fourier transform infrared spectroscopy, and X-ray fluorescence spectroscopy. After polynomial adjustment of the mass loss function associated with the sensibility analysis of the parameter alteration, the estimated life span of the samples ranged from 30 to 38 months. DOI : 10.1007/s11998-008-9135-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9135-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5606
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Application of polyaniline/nylon composites coating for corrosion protection of steel / R. Ansari in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Application of polyaniline/nylon composites coating for corrosion protection of steel Type de document : texte imprimé Auteurs : R. Ansari, Auteur ; Amir H. Alikhani, Auteur Année de publication : 2009 Article en page(s) : p. 221-227 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.
Anticorrosion
Corrosion
Métaux -- Revêtements protecteurs
Polyamide 66
PolyanilineIndex. décimale : 667.9 Revêtements et enduits Résumé : In this research, we investigated the corrosion inhibition properties of polished steel plates (low carbon) coated with a polyaniline (emeraldine base form) blend with nylon 66 (termed PANi/Ny) via cast method with formic acid as the solvent. Polyaniline (PANi) was prepared chemically from aqueous solution using aniline (0.2 M) as a monomer and ammonium persulfate (0.2 M) as an oxidant. The polymer powder produced was changed into emeraldine base (EB) form after treatment with dilute ammonia solution (0.5 M) in order to do further processing. The corrosion experiments were performed in the open circuit, exposing samples to different aggressive and corrosive conditions (e.g., NaCl, HC1). To produce a good comparison, the corrosion study was performed on both polymer-coated and bare-steel samples. Corrosion monitoring was performed by simple immersion tests and determination of the concentration of iron ions and metal weight loss in test solutions. It was found that PANi/Ny coatings can provide an anodic protection against corrosive environments in which the metals are exposed. The corrosion rate for the polymer coated steel was significantly lower than the bare steel (~10-15 times). DOI : 10.1007/s11998-008-9140-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9140-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5622
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Influence of surface cleaning by tools made of copper alloys on the painting performance / F. L. Fragata in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Influence of surface cleaning by tools made of copper alloys on the painting performance Type de document : texte imprimé Auteurs : F. L. Fragata, Auteur ; C. C. Amorim, Auteur ; A. P. Ordine, Auteur ; M. C. Marroig, Auteur ; R. O. Mota, Auteur ; I. C. P. Margarit-Mattos, Auteur Année de publication : 2009 Article en page(s) : p. 229-235 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuivre -- Alliages
Revêtements:Peinture
Spectroscopie de perte d'énergie des électrons
Traîtements de surfaceIndex. décimale : 667.9 Revêtements et enduits Résumé : Surface cleaning tools made of copper alloys are widely employed when sparks have to be avoided. On the other hand, copper residues may be left on the surface. It is not known whether such copper incrustation interferes with the performance of a painting system. Therefore, the aim of this paper is to evaluate the effect of steel surface treatment with copper-containing tools on the performance of a painting system. Painted samples pretreated with ferrous and copper-containing tools were submitted to corrosion tests. The performance was monitored by visual inspection and electrochemical impedance. The surfaces of unpainted samples were analyzed by energy dispersion spectroscopy (EDS) and the open circuit potentials were measured. It is shown that the residues left on the metallic surface due to the mechanical action of the cleaning tools did not interfere significantly with the performance of the painting system. DOI : 10.1007/s11998-008-9141-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9141-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5623
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Effect of heat treatment at 1300°C on W coating prepared by double-glow plasma on carbon/carbon composite / Ying Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Effect of heat treatment at 1300°C on W coating prepared by double-glow plasma on carbon/carbon composite Type de document : texte imprimé Auteurs : Ying Zhang, Auteur ; Dan Fang, Auteur ; Wangping Wu, Auteur ; Chen Liangbing, Auteur ; Zhaofeng Chen, Auteur Année de publication : 2009 Article en page(s) : p. 237-241 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composites à fibres de carbone
Revêtements:Peinture
Technique des plasmasIndex. décimale : 667.9 Revêtements et enduits Résumé : W-coated carbon/carbon composite has been considered as an attractive ITER plasma facing material in fusion devices. In this paper, W coating was prepared on the carbon/carbon composite substrate by double-glow plasma method using pure W as target. Argon was input into the chamber as the plasma and the reactive gas. W-coated carbon/carbon composite was heat-treated in vacuum furnace at 1300°C for 1 h. Phase and microstructure of W coating were examined by X-ray diffraction and scanning electron microscopy, respectively. The chemical composition of W coating was analyzed by energy dispersive spectroscopy. The micro-hardness of the W coating was estimated by nano-indentation instrument. The results indicated that a continuous and dense W-modified layer could be successfully coated on the carbon/carbon composite surface by double-glow plasma method. W coating completely reacted with C to form WC at 1300°C. WC almost completely diffused into the carbon/carbon composite after heat treatment. The great decrease in elemental W on the carbon/carbon composite surface after heat treatment led to a significant reduction in micro-hardness. DOI : 10.1007/s11998-008-9109-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9109-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5624
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Properties of TiN-matrix coating deposited by reactive HVOF spraying / Zhengping Mao in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Properties of TiN-matrix coating deposited by reactive HVOF spraying Type de document : texte imprimé Auteurs : Zhengping Mao, Auteur ; Jing Ma, Auteur ; Jun Wang, Auteur ; Bao-de Sun, Auteur Année de publication : 2009 Article en page(s) : p. 243-250 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier au carbone
Anticorrosion
Métaux -- Revêtements protecteurs
Nitrure de titaneIndex. décimale : 667.9 Revêtements et enduits Résumé : TiN-matrix coating was prepared by reactive high velocity oxygen fuel (HVOF) spraying on carbon steel based on the self-propagating high temperature synthesis (SHS) technique in air. The phase composition, structures, and properties of TiN-matrix coating were analyzed using XRD, EDS, SEM and Vickers microhardness equipment. The anti-corrosion property in nearly neutral 3.5 w t% NaCl electrolytic solution was measured. The Weibull distribution of Vickers microhardness at different loads and their linear fitting were analyzed. The apparent fracture toughness of the coating was also calculated. The coating is composed of main phases (TiN, TiN0.3), minor phases (Ti2O3, TiO2), and porosity. The anti-corrosion property of an HVOF-sprayed TiN-matrix coating in electrolytic solution is superior to that of AISI 316L stainless steel. The microhardness values from 1137HV0.05 to 825HV1 are relatively high and have indentation size effect (ISE). With the increment of m, which increases with the increment of applied load, the microhardness values are more concentrated. The average value of apparent fracture toughness Kic is 4.62MPa}. m1/2. It is higher than that of reactive plasma sprayed (RPS) TiN coating, which reflects the good toughness of a TiN-matrix coating deposited by reactive HVOF spraying. DOI : 10.1007/s11998-008-9105-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9105-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5625
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Fabrication and characterization of Cd-enriched CdTe thin films by close spaced sublimation / M. Arif Khan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Fabrication and characterization of Cd-enriched CdTe thin films by close spaced sublimation Type de document : texte imprimé Auteurs : M. Arif Khan, Auteur ; Nazar Shah, Auteur ; A. Ali, Auteur ; M. Basharat, Auteur ; M. A. Hannan, Auteur ; A. Maqsood, Auteur Année de publication : 2009 Article en page(s) : p. 251-256 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Couches minces
Résistance des matériaux
Revêtements:Peinture
Tellurure de cadmiumIndex. décimale : 667.9 Revêtements et enduits Résumé : Cd-enriched cadmium telluride (CdTe) polycrystalline films were grown on coming glass substrates by close spaced sublimation (CSS) technique. To our knowledge, Cd-enriched CdTe thin films by CSS have not been reported earlier. The structural investigations performed by means of X-ray diffraction (XRD) technique, scanning electron microscope (SEM), and energy dispersive X-ray spectroscopy (EDX) showed that the deposited films exhibit a polycrystalline structure with 〈111〉 as preferred orientation. The structural, optical, and electrical properties of these films were analyzed as a function of the Cd concentration. For the films having an excess of Cd, the electrical resistivity dropped several orders of magnitude. The deposited films also showed that the value of resistivity decreased with increasing temperature manifesting the semiconducting behavior of the films. The results showed that using this deposition technique, n-type Cd-enriched CdTe polycrystalline film could be produced. DOI : 10.1007/s11998-008-9111-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9111-y.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5626
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Palladium and tantalum aluminide coatings for high-temperature oxidation resistance of titanium alloy / Gurrappa Injeti in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Palladium and tantalum aluminide coatings for high-temperature oxidation resistance of titanium alloy Type de document : texte imprimé Auteurs : Gurrappa Injeti, Auteur ; A. Wilson, Auteur ; P. K. Datta, Auteur Année de publication : 2009 Article en page(s) : p. 257-268 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aluminiage
Oxydation
Palladium
Résistance des matériaux
Revêtement métallique -- Effets des hautes températures
Revêtements protecteurs
TantaleLe tantale est un élément chimique du tableau périodique, de symbole Ta et de numéro atomique 73. Ce métal de transition gris-bleu9, lourd, ductile, très dur, très résistant à la corrosion des acides, est également un bon conducteur de chaleur et d'électricité. On le trouve dans le minéral appelé tantalite et dans certains minerais complexes sous forme d'oxyde, associé au niobium, notamment dans le coltan, de couleur noire.
Le tantale est utilisé pour la fabrication d'instruments chirurgicaux et d'implants car il ne réagit pas avec les fluides corporels. Il est très connu en électronique pour la fabrication de condensateurs dits « gouttes de tantale », ainsi nommés à cause de leur forme facilement reconnaissable et qui ont la capacité la plus importante par rapport à la taille.
Cet élément a un point de fusion élevé qui n'est dépassé que par le tungstène, le carbone et le rhénium (point de fusion à 3 016,85 °C, point d'ébullition 5 457,85 °C).
Titane -- AlliagesIndex. décimale : 667.9 Revêtements et enduits Résumé : The present article explains the efforts made in developing new protective coatings based on palladium, tantalum, and aluminum with considerably improved oxidation resistance for effective protection of titanium alloy IMI 834. Systematic characterization was carried out on as-prepared as well as oxidized coatings and these results are presented. The performance of new coatings was evaluated by generating weight-gain data as a function of time followed by detailed characterization in order to confirm the ability of the coatings to prevent oxidation and alpha-case formation. The results showed that tantalum aluminide and simple aluminide coatings exhibit improved oxidation resistance when compared to palladium aluminide. Finally, the advantages of developed new coatings and the necessity of their use in modern gas turbine engines that allow the alloy to be used safely at high temperatures, which in turn would enhance the efficiency of gas-turbine engine-compressor sections, will be stressed. DOI : 10.1007/s11998-008-9113-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9113-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5640
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 2 (06/2009) . - p. 257-268[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Morphologies and growth mechanisms of zirconium carbide films by chemical vapor deposition / Qiaomu Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Morphologies and growth mechanisms of zirconium carbide films by chemical vapor deposition Type de document : texte imprimé Auteurs : Qiaomu Liu, Auteur ; Litong Zhang, Auteur ; Laifei Cheng, Auteur ; Wang Yiguang, Auteur Année de publication : 2009 Article en page(s) : p. 269-273 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Carbure de zirconium
Dépôt chimique en phase vapeur
Revêtement métalliqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Zirconium carbide films were grown on graphite slices by chemical vapor deposition using methane, zirconium tetrachloride, and hydrogen as precursors. The growth rate of zirconium carbide films as a function of temperature was investigated. The morphologies of these films at different temperatures were also observed by scanning electron microscopy. The results indicated that the deposition of zirconium carbide was dominated by gas nucleation at temperatures below 1523 K, and by surface process at temperatures higher than 1523 K. By comparison of the deposition activation energies for zirconium carbide and deposited carbon, it was determined that the carbon deposition was the controlled process during the growing of zirconium carbide films. The effect of temperatures on the morphologies of zirconium carbide films was also discussed, based on the carbon deposition process. DOI : 10.1007/s11998-008-9117-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9117-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5641
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 2 (06/2009) . - p. 269-273[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Study of corrosion and friction reduction of electroless Ni-P coating with molybdenum disulfide nanoparticles / Hu Xianguo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Study of corrosion and friction reduction of electroless Ni-P coating with molybdenum disulfide nanoparticles Type de document : texte imprimé Auteurs : Hu Xianguo, Auteur ; Xiaojun Sun, Auteur ; Yufu Xu, Auteur ; Jiucong Wan, Auteur ; Peng Jiang, Auteur Année de publication : 2009 Article en page(s) : p. 275-281 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alliages nickel-phosphore
Bains de placage
Bisulfure de Molybdène
Corrosion
Frottements (mécanique)
Métallisation
Nanoparticules
Revêtement métalliqueIndex. décimale : 667.9 Revêtements et enduits Résumé : One composite coating of Ni–P alloys containing MoS2 nanoparticles was prepared by electroless technique based on the better friction reduction ability of MoS2 and better anticorrosion property of electroless Ni–P alloys on carbon steel surfaces. Electrochemical method—that is, using Tafel polarization curves—was carried out in order to study the corrosion performance of the coating. The results indicate that the anticorrosion ability of the composite coating was decreased because of the addition of nano-MoS2 particles. The corrosional surfaces were studied and analyzed through scanning electron microscopy (SEM). The corrosion mechanism of the composite coatings was mainly ascribed to the formation of microcells around the nanosized MoS2 particles, and the active ion-like Cl- destroyed the surface film and induced the corrosion on the inside part of the coating. The friction coefficient of electroless composite coatings was measured by end-facing tribometer. It was found that the friction coefficient of the Ni–P–(nano-MoS2) composite coating decreased greatly compared with those of Ni–P electroless coatings. DOI : 10.1007/s11998-008-9131-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9131-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5642
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 2 (06/2009) . - p. 275-281[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible
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Code-barres | Cote | Support | Localisation | Section | Disponibilité |
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011361 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |