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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 2173 for “"aluminum"”.
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Microstructural Control of Aluminum/aluminum Oxide Electrochemistry: Aluminum/aluminum Oxide Photonic Devices
… cross-sectional microcavities and conformal aluminum electrodes, operating in Ne/Xe gas mixtures. In addition, a microchannel plasma device with complex electrode geometries have been fabricated in a single sheet of aluminum foil with an active area of over 30 cm 2. Power consumption as low …
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Interstitial-Impurity Trapping in Aluminum - Iron and Aluminum - Zinc
Made available in DSpace on 2015-05-13T15:22:17Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 8004194.PDF: 3284804 bytes, checksum: 3ca8cdba5173dd4fdbb68ef5ae8c53b2 (MD5) Previous issue date: 1979
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Fluidity in pure aluminum and an aluminum-copper alloy
Thesis: B.S., Massachusetts Institute of Technology, Department of Metallurgy, 1958
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Aluminum/aluminum oxide structured microplasma devices: Paschen's Law and applications
Aluminum/aluminum oxide microplasma novel devices can be fabricated by sequences of inexpensive wet electrochemical processes and provide an attractive tool to study plasma physics by modifying the device geometry as desired. A wet electrochemical process, used for fabricating microscale cavities …
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Post-fire Mechanical Properties of Aluminum Alloys and Aluminum Welds
… mechanical properties of 5083-H116 and 6082-T6 aluminum alloys. Post-fire exposure is considered heating the material to a particular temperature then cooling the material back to room temperature. The research included evaluating parent materials as well as welded samples. Post-fire mechanical …
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Fully dense aluminum-rich aluminum copper oxide powders for energetic formulations
… can be modified to optimize performance. Aluminum-rich compositions are of particular interest for novel energetic components. Synthesis methodology, material properties as a function of composition and morphology, and performance tests will be discussed in this paper.
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Hydrogen in aluminum oxide and at the aluminum oxide/aluminum interface: an ab initio thermodynamics and Monte Carlo investigation
… Moreover, Al₂O₃ is often formed by oxidizing aluminum, resulting in an Al₂O₃/Al interface. The interface structure plays a critical role in these applications, but its buried nature makes experimental characterization challenging. This thesis utilizes ab initio statistical thermodynamics to …
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Quench rate and aging effects in aluminum-zinc-magnesium-copper aluminum alloys
… precipitation in commercial 7075 and 7050 aluminum alloys.</p> <p>The use of the Jominy End Quench test to determine quench factors for the prediction of properties was developed. In addition, the use of Jominy End Quench data to develop Time-Temperature-Property curves (C-Curves) was …
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Stage Iii Annealing Study of Electron-Irradiated Aluminum and Dilute Aluminum Alloys
Made available in DSpace on 2014-12-09T19:52:21Z (GMT). No. of bitstreams: 1 6711881.pdf: 3567207 bytes, checksum: 709085aa7aebbc7d5f7134ec7bc03ef5 (MD5) Previous issue date: 1967
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The processing and characterization of aluminum boride flake-reinforced aluminum matrix composites
AlB$\sb2$ flakes in an aluminum matrix offer the potential for greatly increased composite mechanical and wear properties because of their high aspect ratio, very high mechanical properties and good wetting to the aluminum matrix. This thesis describes, for the first time, an approach to the …
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Microstructure, texture, and hardness gradients in aluminum diffusion-bonded to aluminum oxide
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1998.
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Scrap aluminum as fuel
The new development of a low cost, low risk aluminum fuel production method has extended the viable use cases of aluminum as a fuel. Scrap aluminum has the potential to provide fuel in disaster relief zones when infrastructure is ruined and scrap metal is abundant. Additionally, converting scrap …
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Fundamental studies on electrochemical production of dendrite-free aluminum and titanium-aluminum alloys
A novel dendrite-free electrorefining of aluminum scrap was investigated by using AlCl_3 -1-Ethyl-3-methyl-imidazolium chloride (EMIC) ionic liquid electrolyte. Electrodeposition of aluminum were conducted on copper/aluminum cathodes at voltage of 1.5 V, temperatures (50-110ºC), stirring rate …
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The effects of aluminum oxide on inertial welding of aluminum in space applications
Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1992 and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992.
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Speciation and phytotoxicity of mono- and polynuclear aluminum in dilute hydroxy-aluminum solutions
Despite long-standing interest in the toxicity of aluminum (Al) to plants, relationships between phytotoxicity and the chemistry of Al in hydroxyl-dominated systems remain unresolved. First, the ferron (8-hydroxy-7-iodo-5-quinoline-sulfonic acid), aluminon (aurintricarboxylic acid, triammonium …
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Factors affecting segregation in the controlled solidification of aluminum-copper and aluminum-zinc alloys
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Metallurgy, 1954.
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The development and characterization of aluminum fueled power systems and a liquid aluminum fuel
Various aluminum-water reactions were thermodynamically analyzed across a wide range of temperatures and pressures to determine the most favorable reaction under each condition. Results show that under most achievable temperatures and pressures the reaction will produce AlOOH, however at low …
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Metalloid aluminum clusters with fluorine
… ligands. Here we investigate a prototypical aluminum metalloid cluster to determine system stability if the organic ligand contains significant amounts of fluorine. The fluorine can, in principle, oxidize the metallic elements, resulting in a system much like organic explosives where the fuel …
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Modeling Dissolution in Aluminum Alloys
Aluminum and its alloys are used in many aspects of modern life, from soda cans and household foil to the automobiles and aircraft in which we travel. Aluminum alloy systems are characterized by good workability that enables these alloys to be economically rolled, extruded, or forged into useful …
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