Search for dissertations about: "Spark plasma sintering SPS"
Showing result 16 - 20 of 22 swedish dissertations containing the words Spark plasma sintering SPS.
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16. Proton Conducting Ceramics; Synthesis, Characterization and Sample Cell Environments
Abstract : Acceptor doped Perovskite ceramics have been shown to exhibit high levels of protonic conduction in humid atmospheres. However significant grain boundary resistance and long sintering times required to achieve sufficient grain size growth has hindered their widespread application as electrolyzers, fuel cells and gas separation membranes. READ MORE
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17. Engineered microstructure composites as means of improving the oxidation resistance of uranium nitride
Abstract : Owing to its high uranium density and good thermophysical properties,uranium nitride (UN) fuel has been considered as a potential Accident TolerantFuel (ATF) candidate for use in Light Water Reactors (LWRs). However,the main disadvantage of UN is its low oxidation resistance in water/steamcontaining atmospheres at the operating temperatures of LWRs. READ MORE
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18. Nano-EngineeredThermoelectric Materials for Waste Heat Recovery
Abstract : Energy crisis and thermal management related issues have been highlighted in the modern century due to escalating demands for energy consumption and global warming from fossil fuels. Sustainable and alternative energy sources are an ever growing global concern. READ MORE
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19. Entropy-stabilized transition metal diborides for high-temperature applications
Abstract : Ultra-high temperature ceramics (UHTCs) are typically defined as materials with melting temperatures > 2500 °C, high chemical stability, and retained mechanical resistance at temperatures higher than 1650 °C. UHTCs include carbides and diborides of the Group IVB, VB, and VIB transition metals and are therefore used as structural or protective materials in extreme environments. READ MORE
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20. Processing and Properties of zirconia-CNT composites
Abstract : In the last decades there has been growing interest in developing ceramic materials with high fracture toughness (KIc) and strength for structural applications. In the specific case of 3 mol % yttria-doped tetragonal zirconia (3Y-TZP), K_Ic can be increased by promoting phase transformation from tetragonal (t) to monoclinic (m) phase in front of a propagating crack tip referred to as transformation toughening. READ MORE