Index Catalog // ScholarsArchive@OSU

Creep of tungsten dispersion strengthened by ZrO₂

Creator:: Blickensderfer, Robert
Abstract:: Tungsten alloys containing approximately 0.75 and 2.3 vol pct Zr0₂ were prepared by powder metallurgical methods from blends of commercial tungsten powder and ZrW₂ powder. A heat treatment of the extruded rods at 1800°C was found to produce a stable structure with a dispersion of Zr0₂ particles in the tungsten...
Resource Type:: Dissertation
Full Text:: , and that of Alloy II was W-0.82Zr-0.180 0. TABLE I. Synthesis of the alloys fram powders Tungsten

Effects of selected minor alloying additions on the structure deformation characteristics of beryllium

Creator:: Dooley, George Joseph, III
Abstract:: Solid solution alloying was employed in an attempt to produce some relatively ductile form of beryllium. If the c/a ratio could be significantly altered, it was felt new or different slip systems could be activated. The following elements were selected on the basis of atomic size, melting point, crystal structure...
Resource Type:: Dissertation
Full Text:: stress for (0001) slip and (1010) slip 15 6 The compounds of beryllium 83 7 Nonconsumable arc

Study of simultaneous codeposition of metals at solid electrodes

Creator:: Yindepit, Somrat
Abstract:: As with many pairs of metals, the electrodeposition of Pb-Tl, Cu-Cd, and Cu-Ni at solid electrodes yielded partial polarization curves shifted from the polarization curves of the single metals. The curves for the more noble metals (Pb, Cu) were shifted negatively while the less noble metals'(Tl, Cd, Ni) curves were...
Resource Type:: Dissertation
Full Text:: , and subsequently the strength of the metallic bond, of the alloy is typically higher than the heat of

Tentative equilibrium diagram for the nickel-rich end of the nickel-zirconium system

Creator:: Armstrong, Asa William
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . 3 2 Analyses of Alloys Investigated by Allibone and Sykos (1, p.182) . . . . . . . . . . . . . 5

Development of nickel aluminide (NiAl) microchannel array devices for high-temperature applications

Creator:: Kanlayasiri, Kannachai
Abstract:: The miniaturization of Microtechnology-based Energy, Chemical and Biological Systems (MECS) is made possible by the use of high aspect ratio microchannel arrays to increase the surface-area-to-volume ratio of the flow conduits within the devices, resulting in an improvement in the heat and mass transfer performance of the devices. However, advantages...
Resource Type:: Dissertation
Full Text:: among the intermetallic compounds of the Ni-Al system. Moreover, NiAl has a lower density, and higher

The determination of titanium, zirconium and hafnium in molybdenum, niobium and tantalum alloys by ion exchange

Creator:: Shakashiro, Mouaffac Hamdy
Abstract:: New alloys containing refractory metals have been developed by the aero-space industry to meet the demand for thermally resistant materials. The chemical analysis of these alloys has been handled successfully by the use of ion exchange. Hydrofluoric acid, either alone or combined with hydrochloric acid, has here-to-fore been used to...
Resource Type:: Dissertation
Full Text:: molybdenum, niobium and tantalum alloys by ion exchange AN ABSTRACT OF THE THESIS OF Mouaffac Hamdy

Influence of laser processing on the corrosion and microstructure of zirconium based material

Creator:: Reitz, W. (Wayne)
Resource Type:: Dissertation
Full Text:: laser beam overlap region. Sn and Fe alloy elements seg- regated near the periphery of each melt pool

Studies in molybdenum oxide catalysts : I. Metal vapor reactions of molybdenum trioxide with various alkoxy silanes : II. Investigation of oxide supported molybdenum catalysts prepared from molybdenum(VI)dioxodiethoxide

Creator:: Huffman, David Earl
Abstract:: The cocondensation reactions of molybdenum trioxide vapor with tetraalkoxysilanes, trimethylalkoxysilanes, and hexamethyldisiloxane at -196°C were investigated. The products from the metal vapor reactions of tetramethoxysilane, tetraethoxysilane, and tetrapropoxysilane were characterized as molybdenum(VI)dioxodialkoxy compounds. The isolated compounds were found to be polymeric in the solid state by bridging through alkoxide groups....
Resource Type:: Dissertation
Full Text:: compounds which were also polymeric in na- ture. The metal vapor reactions of tetra-2-butoxysilane and tri

Design of advanced aluminum silicon alloy compositions and processing

Creator:: Li, Xiao, 1963-
Abstract:: Part I discusses the development of an aluminum-magnesium-silicon alloy that may combine strength, extrudability, favorable corrosion resistance with low cost and scrap compatibility. The first part of the study determined the effects of small composition, heat treatment and mechanical processing changes on the ambient temperature tensile properties of the alloy....
Resource Type:: Dissertation
Full Text:: of semi-solid A356, A357 and modified aluminum silcon semi-solid alloys. The semi-solid alloy

Fracture energies of Zircaloy and some zirconium alloys

Creator:: Rawers, James C.
Abstract:: The fracture mechanics of Charpy V-notch specimens of Zircaloy-4 and phosphorus contaminated Zircaloy-4 were investigated. Three-point bend and impact tests with Charpy V-notch samples provided an efficient and economical method of fracture evaluation. Fracture failure was monitored by the force-displacement curve. Failure was initially analyzed using fracture toughness values as...
Resource Type:: Dissertation
Full Text:: Fracture energies of Zircaloy and some zirconium alloys

ScholarsArchive@OSU

Creep of tungsten dispersion strengthened by ZrO₂

Effects of selected minor alloying additions on the structure deformation characteristics of beryllium

Study of simultaneous codeposition of metals at solid electrodes

Tentative equilibrium diagram for the nickel-rich end of the nickel-zirconium system

Development of nickel aluminide (NiAl) microchannel array devices for high-temperature applications

The determination of titanium, zirconium and hafnium in molybdenum, niobium and tantalum alloys by ion exchange

Influence of laser processing on the corrosion and microstructure of zirconium based material

Studies in molybdenum oxide catalysts : I. Metal vapor reactions of molybdenum trioxide with various alkoxy silanes : II. Investigation of oxide supported molybdenum catalysts prepared from molybdenum(VI)dioxodiethoxide

Design of advanced aluminum silicon alloy compositions and processing

Fracture energies of Zircaloy and some zirconium alloys

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