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Effect of heat treatment on microstructure and mechanical properties of cold sprayed Ti coatings with relatively large powder particles / W.-Y. Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)
[article]
Titre : Effect of heat treatment on microstructure and mechanical properties of cold sprayed Ti coatings with relatively large powder particles Type de document : texte imprimé Auteurs : W.-Y. Li, Auteur ; C. Zhang, Auteur ; H. Liao, Auteur ; C. Coddet, Auteur Année de publication : 2009 Article en page(s) : p. 401-406 Note générale : Bibliogr. Langues : Américain (ame) Tags : Cold spraying Vacuum heat treatment Titanium Microstructure Microhardness Adhesive strength Index. décimale : 667.9 Revêtements et enduits Résumé : In this study, the effect of post-spray heat treatment on the microstructure, microhardness, and adhesive strength of the cold-sprayed Ti coating was investigated. It was found that a thick and relatively porous Ti coating was deposited by cold spraying. The coating surface layer presented a more porous structure. The microhardness of the as-sprayed Ti coating was slightly higher compared to pure Ti bulk, owing to the work hardening effect during deposition. After annealing at 850°C for 4 h under vacuum condition, the Ti coating also presented a porous structure with more uniformly distributed small pores. A metallurgical bonding between the deposited particles was formed through annealing treatment. The adhesive strength of coating was significantly improved after annealing. The microhardness of the annealed Ti coating was also increased. DOI : 10.1007/s11998-008-9133-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9133-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6121
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 3 (09/2009) . - p. 401-406[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011503 - Périodique Bibliothèque principale Documentaires Disponible The effects of various variotherm processes and their mechanisms on injection molding / C.-T. Huang in INTERNATIONAL POLYMER PROCESSING, Vol. XXVI, N° 3 (07/2011)
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Titre : The effects of various variotherm processes and their mechanisms on injection molding Type de document : texte imprimé Auteurs : C.-T. Huang, Auteur ; I.-S. Hsien, Auteur ; C.-H. Tsai, Auteur ; Y.-C. Chiou, Auteur ; C.-C. Tang, Auteur Année de publication : 2011 Article en page(s) : p. 265-274 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Matières plastiques -- Moulage par injection
Moules d'injectionTags : Moules 'Rapid heat cycle molding' RHCM 'Induction heating molding IHM 'Conventional injection CIM 'Electricity mold' E-mold 'Conservation énegie' Index. décimale : 668.4 Plastiques, vinyles Résumé : To eliminate surface defects and improve the quality of molded parts, increasing the mold temperature is one of the solutions. Using high mold temperature can eliminate weld lines, reduce molding pressure, residual stress and clamping force and improve part surface quality. However, with the increasing of mold temperature, the cycle time will also be increased. Hence, people have paid the attention to mold temperature control technologies. Among them, the variotherm molding technologies, including Rapid Heat Cycle Molding (RHCM), Induction Heating Molding (IHM), and Electricity Heating Mold (Emold), are some effective methods. Although those variotherm technologies have been proposed, how does the external or internal heating source affect the injection molding process and the final product? The true function and the efficiency study of each technology still remain vague. Hence, in this paper, we have systematically conducted various technologies, including Conventional Injection Molding (CIM), RHCM, IHM, and Emold, by using true 3D transient cool technology. Through the inside mechanism investigation at various moments in time, the functions and the heating-cooling efficiency for each technology can be visualized. Besides, experimental study and verification of IHM are also performed. Note de contenu : - Theory and assumptions
- Initial condition for energy conservation
- Boundary conditions for energy conservation
- Numerical discretization method
- Investigation proceduresDOI : 10.3139/217.2436 En ligne : https://drive.google.com/file/d/15wEwbQ7pbTp8FfOUsmfrichpp5DZXN_E/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12405
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVI, N° 3 (07/2011) . - p. 265-274[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013159 - Périodique Bibliothèque principale Documentaires Disponible