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Risoluzione schermo: 640 x 480 800 x 600 1024 x 768 1280 x 1024 Nome utente: Password: Formato: Basic  Help  Richiesta  Formato: Tipo di Carattere Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Dimensione del Carattere 1 2 3 4 5 6   Colore del Carattere Nero Rosso Giallo Rosa Verde Arancione Viola Blu Beige Marrone Verde Bosco Blu scuro Marrone scuro Verde chiaro Messaggio: HTML non è attivo Il codice su forum è attivo Faccine [quote][i]Originariamente inviato da SAKURAJUN[/i] [br]Layered structure of alumina/graphene-augmented-inorganic-nanofibers with directional electrical conductivity[url=https://www.hslabrasive.com/]hsl abrasive factory[/url] Implementation of layered structures with strong nanoscale optimized interfaces, enables engineering of materials with functional properties. In this work, anisotropic functional multi-layered structures are produced by integration of a thin hybrid inter-layer of graphene-augmented-nanofibers/alumina into #945;-alumina through an ex-situ strategy of precipitating the tailored hybrid from a solution. Spark plasma sintering was used to consolidate the layered structures at 1150 and 1450 °C under 75 and 50 MPa pressure. Raman spectroscopy suggests presence of C–H bonds and sp3 hybridization for the samples sintered at 1150 °C, while graphene structure is purified at the sintering temperature of 1450 °C. The multilayer structures demonstrate a high in-plane electrical conductivity which can be modulated, ranging from 300 to 1800 S m#8722;1 as a function of the interlayer thickness and the carbon content. A p-type conduction at room temperature and n-type down to 4 K in graphene-augmented nano-fillers was observed in Hall measurement. However, the multilayered systems display a p-type conduction in the entire temperature range. Hardness was preserved despite the high concentration of the graphene-augmented nano-fillers in the hybrid interlayer leaving a highest value of #8764;22 GPa. The results have the potential to fuel the development of functional electronic enclosures with additional functionalities such as electromagnetic interference shielding.[url=https://www.hslabrasive.com/products/fused-alumina/]fused alumina wholesale distributors[/url] [/quote]   Seleziona qui per inserire la tua firma.