Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 759 for “"SiC"”.
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Thermal conductivity/diffusivity of SiC-Mullite and SiC-SiC composites
… diffusivity and/or thermal conductivity of SiC-Mullite and SiC-SiC, and to explain the observed behavior in terms of changes in temperature, microstructure, composition, and/or orientation. Materials used in the SiC-Mullite study consisted of single crystal SiC whiskers (prepared from rice …
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Mapping the thermal conductivity of SiC/SiC composites
… (TDTR) to map the thermal conductivity of SiC/SiC composites that are being considered for use as replacement materials in current light-water reactors (LWR), and also as materials for use in next generation nuclear reactors. The thermonuclear properties of the SiC/SiC composites can be …
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Low modulus, oxidation-resistant interface coatings for SiC/SiC composites
… was evaluated as a weak interface coating for SiC/SiC composites. A procedure was developed to put down uniform and crack-free CMZP coatings on Nicalon cloth and tows using sol-gel and metal organic deposition (MOD). The coated Nicalon cloth samples and tows were infiltrated with SiC matrix …
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NITE–Processed SiC/SiC Ceramic Composites in Liquid Sandwich Vacuum Vessel
… thin walls of silicon carbide ceramic composite (SiC/SiC) surrounding a layer of liquid lead. Because liquid lead is much more electrically conductive than SiC/SiC, the liquid lead absorbs disruption-induced currents and the resulting forces. This enables the use of a thin-walled VV to promote …
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Quasi-Static and Creep Behavior of Enhanced SIC/SIC Ceramic Matrix Composites
… turbines. The creep behavior of woven Enhanced SiC/SiC composites was studied at temperatures from 600 to 1200 °C and at 140 to 220 MPa stress levels. Most researchers studying the creep behavior of ceramic matrix composites (CMCs) use the time hardening model and rate equations for expressing …
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The principles and effectiveness of pubic [sic] participaion [sic] in water resource planning
Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1987.
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Advanced characterization of 4H-SiC MOSFET channel [Caratterizzazione avanzata del canale 4H-SiC MOSFET]
… ad alte prestazioni in carburo di silicio (SiC) rappresenta un passo fondamentale per l'avanzamento della moderna elettronica di potenza. Grazie all'ampio bandgap, all'elevata conducibilità termica e all'alto campo elettrico, il 4H-SiC è emerso come materiale chiave per dispositivi …
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Metalizzazione su superfici di SiC: Contatti ohmici di Nisu 4H-SiC tramite processi laser
… ohmici sul lato posteriore dei dispositivi di SiC è particolarmente importante poiché una barriera ad alto potenziale tende a formarsi all'interfaccia tra la maggior parte dei metalli e il SiC. Ciò si traduce in un basso trasporto di corrente, una bassa velocità di commutazione e un aumento …
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Oxidation of ZrB₂-30 vol% SiC at 1500⁰C with emphasis on reactions involving SiC
… processes responsible for oxidation of ZrB₂-SiC ceramics at 1500⁰C"--Abstract, page iv.
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Degradationsmodi der Oberseitenkontaktierung von SiC-Leistungshalbleitern
… und Verbindungstechniken in Siliziumkarbid (SiC)-Leistungsmodulen, insbesondere die Oberseitenkontaktierung mit Aluminium- und Kupfer-Bonddrähten. Motiviert durch den steigenden Bedarf an robusten und leistungsfähigen SiC-Modulen für Anwendungen in der Elektromobilität und …
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Simulation of SiC MOSFET Power Converters
… discusses the use of wide bandgap devices (SiC-MOSFET) in the design and implementation of various power converters (Push-pull inverter, Buck converter). Different parameters and scenarios were discussed and implemented for both silicon and silicon carbide MOSFET cases. A comparison between …
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4H-SiC FinFET devices and modelling
As a semiconductor material, Silicon Carbide (SiC) has promising electrical properties in high-voltage, high-frequency switching applications for various power electronics applications. In particular, SiC power MOSFETs have undergone remarkable development and optimisation, turning them into …
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Design optimization of advanced PWR SiC/SiC fuel cladding for enhanced tolerance of loss of coolant conditions
… on experimental work) on integrated multilayer SiC/SiC prototypical fuel cladding. In this work the mechanical performance of three unique architectures of three-layer silicon carbide (SiC) composite cladding is experimentally investigated under conditions associated with the loss of coolant …
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An Optical Flow Based Methodology for Visualizing Dynamic Sucellular [sic] Organiztion [sic] Demonstrated Through Profilin and Rho GTPase Microdomains
Live cell imaging has enabled the collection of movies of subcellular protein dynamics at a submicron resolution. Statistical time series analysis can greatly expand our understanding of subcellular interactions in minimally perturbed systems. This was previously achieved for the leading edge of …
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Manufacturing Strategies for NITE-processed SiC/SiC Ceramic Composite Components in the Liquid Sandwich Vacuum Vessel for Fusion Reactors
… walls made of silicon carbide ceramic composite (SiC/SiC). By dissipating disruption forces within the liquid lead, the SiC/SiC walls can remain thin, improving heat transfer and the overall efficiency of the fusion reactor. However, SiC/SiC’s brittleness and anisotropy present challenges in …
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The Edge States of Epitaxial Graphene on SiC
… in sidewall epitaxial graphene nanoribbons on SiC (SWGNRs) at room temperature. These objects are of fundamental interest as they provide a direct access to charge neutral graphene with excellent transport properties. In this thesis, beyond sidewalls, we fabricate epitaxial graphene devices on …
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