Search for dissertations about: "atmospheric pressure"
Showing result 16 - 20 of 159 swedish dissertations containing the words atmospheric pressure.
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16. The effect of microstructure and temperature on the atmospheric corrosion of Mg-Al alloys
Abstract : The NaCl-induced atmospheric corrosion behavior of the Mg-Al alloy AM50 produced by rheo-casting (RC) and high pressure die casting (HPDC) techniques was studied in the laboratory. The exposures were performed at 95% RH in the absence and presence of 400 ppm CO2 at 22, 4 and -4ºC. In parallel, 99.97%Mg was investigated as reference. READ MORE
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17. The Role of Microstructure in the Atmospheric Corrosion of Selected Light Alloys and Composites
Abstract : Magnesium-aluminum (Mg-Al) alloys, Mg-based metal matrix composites (MMCs) and Al alloys are among the best material candidates for future lightweight solutions. However, the use of these materials is limited by a number of issues, including the ability to resist corrosion. READ MORE
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18. Atmospheric pressure ionisation interface considerations for micro column separation with mass spectrometric detection
Abstract : Two miniaturised atmospheric pressure chemical ionisation (APCI) interfaces were developed for micro column separation and their performances were investigated in high temperature open tubular column liquid chromatography and capillary supercritical fluid chromatography (SFC). The most influential parameters, for example, the interface probe position relative to the sampling orifice and the reagent ion plasma composition, were investigated to optimise the ion current signal and stability. READ MORE
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19. Oxidation of some Late Transition Metal Surfaces: Structural Studies from UHV to Atmospheric Pressure
Abstract : The oxidation of Rh, Pd and Pt is studied under conditions ranging from ultra high vacuum to ambient pressures, with emphasis on a complete understanding of the geometry of the various oxide structures found. The investigations use a combination of various experimental methods, including high resolution core level spectroscopy, low energy electron diffraction, surface x-ray diffraction and scanning tunneling microscopy, as well as density functional theory calculations. READ MORE
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20. Water Condensation and Freezing in the Atmosphere: Exploring Deliquescence and Ice Nucleation
Abstract : Atmospheric aerosols play key roles in numerous atmospheric processes. They affect human health, are substrates and components for atmospheric chemistry, and via their contribution to clouds affect the water cycle and the energy balance of the planet. READ MORE