Search for dissertations about: "Y2O3"
Showing result 1 - 5 of 21 swedish dissertations containing the word Y2O3.
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1. Thermodynamic modelling and assessment of some alumino-silicate systems
Abstract : Alumino-silicate systems are of great interest for materials scientists and geochemists. Thermodynamic knowledge of these systems is useful in steel and ceramic industries, and for understanding geochemical processes. A popular and efficient approach used to obtain a self-consistent thermodynamic dataset is called CALPHAD. READ MORE
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2. Development of Nanostructured Tungsten Based Composites for Energy Applications
Abstract : Tungsten (W) based materials can be used in fusion reactors due to several advantages. Different fabrication routes can be applied to develop tungsten materials with intended microstructure and properties for specific application including nanostructured grades. READ MORE
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3. Synthesis of Yb:Y2O3 nanoparticles and fabrication of transparent polycrystalline yttria ceramics
Abstract : More efficient laser materials are needed for space applications in order to save weight and make cost-savings. The fabrication of polycrystalline ceramic materials is a solution to obtain new compositions with better efficiency. READ MORE
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4. Grain Morphology and Intergranular Structure of Si3N4 and Al2O3 Based Ceramics
Abstract : This thesis concerns factors controlling the grain morphology in Si3N4 and Al2O3 based ceramics. The microstructures of the ceramics were characterized by scanning electron microscopy in combination with quantitative microscopy and stereologic methods. READ MORE
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5. The Microstructure of Metal Oxide Additive Silicon Nitride Ceramics
Abstract : This work is concerned with Si3N4 ceramics fabricated with different metal oxide additives, viz. Y2O3, Al2O3, ZrO2 and ZrO2(+3 mol% Y2O3), which have been densified by hot isostatic pressing (HIP). READ MORE