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Showing 1 to 18 of 18 for “"Metallic oxides."”.
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An investigation of the catalytic effect of ferric oxide on the sulphating of metallic oxides
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mining Engineering and Metallurgy, 1916.
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AN EXPERIMENTAL INVESTIGATION INTO THE EFFICIENCY OF FILTER MATERIALS FOR PHOSPHATE REMOVAL FROM WASTEWATER
… effectively. Filtration materials coated with metallic oxides are presented as a good method for phosphate sorption. However, most of the researchers utilize chemicals as a source of metallic oxides and heating process to set the chemicals over the filtration materials. In this study, the …
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Formation and Quantification of Corrosion Deposits in the Power Industry
… due to the presence of impurities, metals and metallic oxides in the secondary side of the steam generator units result in formation of deposits. This research deals with understanding the deposit formation and characterization of deposits by studying the samples collected from different units …
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Pulsatile Electropolishing of Nitinol Stents
… these oxidize and form stable surface layers of metallic oxides that prevent further dissolution. This is usually overcome with the use of acid solutions that dissolve the metallic oxide. This thesis aims to shift the primary control of the electropolishing e_ect from electrolyte variables to a …
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Enhancing light-matter interactions in oxide semiconductors
… material system including oxide semiconductor, metallic oxide, and composite. This approach was achieved by combining the ability to synthesize high-quality thin-films, control the strain via substrate epitaxy, and utilize self-assembly in composite materials. First, I show the ability to …
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Characterization of Graphene Field-Effect Transistors for High Performance Electronics
… A technique is developed to grow metal-oxides on graphene surface for efficient gate coupling. An alternative approach to making high quality devices is realized by incorporating hexagonal-boron nitride as a gate dielectric. These transistors exhibit the potential of graphene electronics …
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Municipal Solid Waste Incineration (MSWI) Ash Characterization and Physical Concentration
… enrichment are a function of the bound of multi-metallic oxides fractions. The 2.95 SG density test reached enrichment ratios higher than 2.0 in Fe, Cu, Co, and Ni in the coarse fraction of the BA fraction, which decreases when reducing the size fraction. When reducing the density cutoff, the …
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Solvent-free Knoevenagel condensation over supported mixed metal oxides catalysts
Submitted in the fulfilment of the requirement for the Master's Degree in Chemistry, Durban University of Technology, Durban, South Africa, 2017.
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Preparation and characterization of praseodymium oxide films and powders.
Nanocrystalline praseodymium oxide films have been successfully generated on stainless steel substrates. The electrochemical deposition was performed in the cathode compartment of a divided electrochemical cell with a regular three-electrode configuration. The green films obtained by …
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Metal-Aluminum Oxide Interactions: Effects of Surface Hydroxylation and High Electric Field
Metal and oxide interactions are of broad scientific and technological interest in areas such as heterogeneous catalysis, microelectronics, composite materials, and corrosion. In the real world, such interactions are often complicated by the presence of interfacial impurities and/or high electric …
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High-Temperature Corrosion of Aluminum Alloys: Oxide-Alloy Interactions and Sulfur Interface Chemistry
… mechanism for sulfur-induced destruction of oxides, however, is ambiguous. The objective of the present research is to elucidate the microscopic mechanism for the high-temperature corrosion of aluminum alloys in the presence of sulfur. Auger electron spectroscopy (AES), low energy electron …
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Metal Oxide Reactions in Complex Environments: High Electric Fields and Pressures above Ultrahigh Vacuum
Metal oxide reactions at metal oxide surfaces or at metal-metal oxide interfaces are of exceptional significance in areas such as catalysis, micro- and nanoelectronics, chemical sensors, and catalysis. Such reactions are frequently complicated by the presence of high electric fields and/or …