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Dry abrasion property of TiN-matrix coating deposited by reactive High Velocity Oxygen Fuel (HVOF) spraying / Zhengping Mao in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 2 (03/2010)
[article]
Titre : Dry abrasion property of TiN-matrix coating deposited by reactive High Velocity Oxygen Fuel (HVOF) spraying Type de document : texte imprimé Auteurs : Zhengping Mao, Auteur ; Jing Ma, Auteur ; Jun Wang, Auteur ; Baode Sun, Auteur Année de publication : 2010 Article en page(s) : p. 253-259 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Pulvérisation réactive' 'Projection flamme oxygène-carburant haute vitesse' (HVOF) 'Abrasion sèche 'Auto-lubrifiant' 'Revêtement nitrure titane' Index. décimale : 667.9 Revêtements et enduits Résumé : A TiN-matrix coating with a thickness of about 400 μm was prepared by reactive high velocity oxygen fuel (HVOF) spraying on carbon steel in air. The phase composition, microhardness, and antiabrasion properties of the coating were investigated using x-ray diffraction (XRD), an energy dispersive spectrometer (EDS), a scanning electron microscope (SEM), a Vickers microhardness tester, and block-on-ring abrasive equipment. The abrasion mechanism of TiN-matrix coating under dry abrasion conditions was also discussed. The results indicate that the composition of the coating is main phases of TiN and TiN0.3, minor phases of Ti2O3, and TiO2. The TiN-matrix coating possesses high microhardness and relatively good toughness. Furthermore, the friction coefficient of the coating decreases with the increment of applied load. The interstratified distribution of titanium oxides can act as a solid lubricant during the wear test. The main abrasion mechanism of the TiN-matrix coating is adhesion wear. In addition, the coating with self-lubricating property can improve the antiwear property of the substrate significantly. DOI : 10.1007/s11998-009-9180-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9180-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9071
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 2 (03/2010) . - p. 253-259[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012083 - Périodique Bibliothèque principale Documentaires Disponible Scaling-up a reactive extrusion operation : A one-dimensional simulation analysis / Ederley Ortiz-Rodriguez in INTERNATIONAL POLYMER PROCESSING, Vol. XXV, N° 3 (07/2010)
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Titre : Scaling-up a reactive extrusion operation : A one-dimensional simulation analysis Type de document : texte imprimé Auteurs : Ederley Ortiz-Rodriguez, Auteur ; C. Tzoganakis, Auteur Année de publication : 2010 Article en page(s) : p. 242-250 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Matières plastiques -- Extrusion
PolypropylèneTags : Polypropylène 'Extrusion réactive' 'Specific energy consumption' (SEC) 'Co-rotating intermeshing twin screw extruders' (COITSEs) 'Polydispersity index 'PDI) Simulation Analyse Index. décimale : 668.9 Polymères Résumé : The peroxide-initiated degradation of polypropylene is simulated by means of a one-dimensional (1D) reactive extrusion (REX) model. Two scale-up rules, namely, constant thermal time and specific energy consumption (SEC) are evaluated for co-rotating intermeshing twin screw extruders (COITSEs) of various sizes. The weight-average molecular weight (Mw) and the polydispersity index (PDI) are selected as the evaluation parameters for testing the scale-up procedures being analyzed. The results for the simulated operating conditions show that when the REX operation is scaled-up under constant thermal time, very good agreement is obtained between the Mw and PDI of the larger extruders and the values of these parameters corresponding to the reference extruder. For the constant SEC approach, more significant variations are observed for both of the aforementioned parameters. In the case of the constant thermal time scale-up approach, the effect of operating conditions of the reference extruder on the scaled-up operation is further analyzed. For a constant screw speed, when the reference mass throughput increases the predicted time of extrusion increases. Regarding the temperature of reaction, the higher increase of this parameter corresponds, in general terms, to the lower mass throughputs and higher screw speeds specified for the reference extruder. DOI : 10.3139/217.2346 En ligne : https://drive.google.com/file/d/1KVZ6c7KVBVt1uLyNXJKR45y_XXQLFjtL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9740
in INTERNATIONAL POLYMER PROCESSING > Vol. XXV, N° 3 (07/2010) . - p. 242-250[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012302 - Périodique Bibliothèque principale Documentaires Disponible The development of pre-construction primer to meet the changing demands of shipbuilding technology / Sunil Kale in PAINTINDIA, Vol. L, N° 7 (07/2000)
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Titre : The development of pre-construction primer to meet the changing demands of shipbuilding technology Type de document : texte imprimé Auteurs : Sunil Kale, Auteur Année de publication : 2000 Article en page(s) : p. 51-54 Langues : Anglais (eng) Tags : 'Matériau revêtement' 'Peinture primaire' anticorrosion' primaire réactive' Utilisation 'Construction navale' 'Elément préfabriqué' 'Shop primer' Index. décimale : 667.9 Revêtements et enduits Résumé : Shipbuilding is a highly competitive industry and against a background of increasing capacity and depressed prices, it is clear that only the best will survive.
Shipyards are clearly reviewing all technologies and seeking opportunities to improve productivity. Several key areas are directly related to shop primer technology. These are welding speed, welding quality and secondary surface preparation.
In order to improve productivity attention must be focused on reducing the build cycle and minimising rework resulating from weld quality and excessive secondary surface preparation. In addition to these productivity factors yards must also ensure that they comply with the latest legislative and environmental requirements that continue to limit the coating solutions avalaible to them.Note de contenu : - WORLD CLASS MANUFACTURING : Design Cycle - Short build cycle - Zero defects - Zero stocks
- SHOP-PRIMER DEVELOPMENTS : Mechanism of porosity generation - Effect of joint type on porosity - Effect of welding rate on porosity - Thermal stability heat resistance - White rust resistancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12751
in PAINTINDIA > Vol. L, N° 7 (07/2000) . - p. 51-54[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001255 - Périodique Bibliothèque principale Documentaires Disponible