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TRANSIENT RADIATION EFFECTS IN CAPACITORS AND DIELECTRIC MATERIALS

Description: Measurements of dielectric leakage, capacitance, electric strength, andd charge scattering phenomena were performed at the Kukla and Godiva III critical assemblies for tantalum and aluminum electrolytic, wax- and oilimpregnated paper, mylar, mica, and ceramic capacitors, and for mylar and Vitamin B-impregnated paper. Leakage data indicate that gamma induced conductivity in capacitor dielectric varies directly with gamma DELTA , where gamma is the gamma radiation rate and DELTA is 0.9 for mylar,… more
Date: August 15, 1961
Creator: Wicklein, H. W. & Dickhaut, R. H.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Phase Transformations in Alumina. Technical Report, May to December 1961

Description: e transformation studies showed that synthetic aluminas produced in the laboratory were not transformed to alpha alumina at 400 to 700' deg n the presence of nitric acid and water vapor. Amorphous aluminn produced in the pilot plant was transformed to alpha alumina. This indicated that the amorphous alumina produced in the pilot plant is structurally predisposed to form alpha alumina. Most additives did not appear to have any special effects. Lithium formed zeta alumina, LiAl/sub 5/O/sub 8/. Ph… more
Date: December 1, 1961
Creator: Eding, H J; Huggins, M L & Brown, A G
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Modified Pyroelectric Sodium Fluoride Carrier Distillation Medthod For The Spectrographic Analysis Of Impurities In Plutonium

Description: A modification of the pyroelectric sodium fluoride carrier distillation method for analysis of impurities in plutonium metal is described. The metal is dissolved. Plutonium is precipitated and treated with nitric acid. The slurry obtained is dried and ignited. The resultant low density oxide is mixed with sodium fluoride and pressed into a pellet for arcing. Cobalt is used as the internal standard for densitometric using visual comparisons against prepared standards. The procedural modification… more
Date: August 1, 1966
Creator: Schreiber, G. A. & Barrick, C. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Effect of Casting Conditions and Composition on Microstructural Gradients in Roll Cast Aluminum Alloys

Description: Twin Roll Casting (TRC) is a process by which thin strip is produced directly from molten metal. This process has many advantages over traditional Direct Chill (DC) casting where metal is cast into large slabs or ingots and subsequently hot and cold rolled into strips. While the DC casting involves large capital investment and energy consumption, TRC produces strip with thickness in the range of 10 mm to 2.5 mm in one operation without hot rolling, with less cost, energy usage and equipment req… more
Date: May 2, 2008
Creator: Patterson, Burton R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measuring Radiation Damage from Heavy Energetic Ions in Aluminum

Description: An intense beam of 122 MeV/u (9.3 GeV) 76Ge ions was stopped in aluminum samples at the Coupled Cyclotron Facility at NSCL, MSU. Attempts were made at ORNL to measure changes in material properties by measuring changes in electrical resistivity and microhardness, and by transmission electron microscopy characterization, for defect density caused by radiation damage, as a function of depth and integrated ion flux. These measurements are relevant for estimating damage to components at a rare isot… more
Date: February 21, 2009
Creator: Kostin, M., PI-MSU; Ronningen, R., PI-MSU; Ahle, L., PI-LLNL; Gabriel, T., Scientific Investigation and Development; Mansur, L., PI-ORNL; Leonard, K., ORNL et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Microstructural Characterization of Dislocation Networks During Harper-Dorn Creep of fcc, bcc, and hcp Metals and Alloys

Description: Harper-Dorn (H-D) creep is observed in metals and geological materials exposed to very low stresses at temperatures close to the melting point. It is one of several types of creep processes wherein the steady-state strain rate is proportional to the applied stress, Nabarro-Herring creep and Coble creep being two other important processes. H-D creep can be somewhat insidious because the creep rates are much larger than those expected for Nabarro-Herring or Coble creep. Since the working conditio… more
Date: December 13, 2007
Creator: Przystupa, Marek A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Report: Radiation-magnetohydrodynamic evolution and instability of conductors driven by megagauss magnetic fields

Description: We are pleased to report important progress in experimentally characterizing and numerically modeling the transformation into plasma of walls subjected to pulsed megagauss magnetic fields. Understanding this is important to Magnetized Target Fusion (MTF) because an important limitation to the metal liner approach to MTF comes from the strong eddy current heating on the surface of the metal liner. This has intriguing non-linear aspects when the magnetic field is in the megagauss regime as needed… more
Date: October 22, 2008
Creator: Bauer, Bruno, S. & Siemon, Richard, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Recycling]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: August 1, 1990, 6:00 p.m.
Duration: 1 minute 12 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Recycling]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: August 2, 1990, 6:00 p.m.
Duration: 52 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Application of High-Temperature Mold Materials to Die Cast Copper Motor Rotor for Improved Efficiency

Description: The objective of the study, Application of High-Temperature Mold Materials to Die Cast Copper Motor Rotor for Improved Efficiency, was to support the Copper Development Association (CDA) in its effort to design, fabricate and demonstrate mold technologies designed to withstand the copper motor rotor die casting environment for an economically acceptable life. The anticipated result from the compiled data and tests were to: (1) identify materials suitable for die casting copper, (2) fabricate mo… more
Date: May 2003
Creator: Cowie, John G.; Edwin F. Brush, Jr.; Peters, Dale T.; Midson, Stephen P. & Son, Darryl J. Van
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Potential for Generation of Flammable Mixtures of Hydrogen from Aluminum-Grout Interaction in the K Basins During Basin Grouting

Description: During the course of deactivation and decommissioning (D&D) of the K-Basins, the basins will be partially filled with grout so as to immobilize residual equipment and debris. Some of this residual debris, principally empty fuel canisters, identification tags, and long-handled tools, contain aluminum metal. The aluminum metal will corrode when contacted with the high pH grout, resulting in the generation of hydrogen. Pacific Northwest National Laboratory (PNNL) evaluated existing experimenta… more
Date: April 29, 2005
Creator: Short, Steven M. & Parker, Brian M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Membrane Purification Cell for Aluminum Recycling

Description: Recycling mixed aluminum scrap usually requires adding primary aluminum to the scrap stream as a diluent to reduce the concentration of non-aluminum constituents used in aluminum alloys. Since primary aluminum production requires approximately 10 times more energy than melting scrap, the bulk of the energy and carbon dioxide emissions for recycling are associated with using primary aluminum as a diluent. Eliminating the need for using primary aluminum as a diluent would dramatically reduce ener… more
Date: November 29, 2011
Creator: DeYoung, David; Wiswall, James & Wang, Cong
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Non-Contact Printed Aluminum Metallization of Si Photovoltaic Devices: Preprint

Description: Alternative solution-based techniques such as aerosol jet printing offer the dual benefits of contactless pattern deposition and high material utilization. We have used aerosol jet printing to investigate non-contact printed Al metal ink as a replacement for screen printed Al back contacts on wafer Si solar cells. This particle-based ink can be prepared at high loadings of 60 weight % metal, which enables rapid deposition of 1 - 10 um thick lines. Al lines printed on Si wafers and heated betwee… more
Date: June 1, 2012
Creator: Platt, H. A. S.; van Hest, M. F. A. M.; Li, Y. & Novak, J. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Energy Saving Melting and Revert Reduction Technology: Melting Efficiency in Die Casting Operations

Description: This project addressed multiple aspects of the aluminum melting and handling in die casting operations, with the objective of increasing the energy efficiency while improving the quality of the molten metal. The efficiency of melting has always played an important role in the profitability of aluminum die casting operations. Consequently, die casters need to make careful choices in selecting and operating melting equipment and procedures. The capital cost of new melting equipment with higher ef… more
Date: December 15, 2012
Creator: Schwam, David
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Twelve Year Study of Underground Corrosion of Activated Metals

Description: The subsurface radioactive disposal facility located at the U.S. Department of Energy’s Idaho site contains neutron-activated metals from non-fuel nuclear-reactor-core components. A long-term corrosion study is being conducted to obtain site-specific corrosion rates to support efforts to more accurately estimate the transfer of activated elements in an arid vadose zone environment. The study uses non-radioactive metal coupons representing the prominent neutron-activated material buried at the d… more
Date: March 1, 2012
Creator: Flitton, M. Kay Adler & Yoder, Timothy S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Microstructure Evolution During Spray Rolling and Heat Treatment of 2124 Al

Description: Spray rolling is a strip casting technology that combines elements of spray forming and twin-roll casting. It consists of atomizing molten metal with a high velocity inert gas, quenching the resultant droplets in flight, and directing the spray between mill rolls. In-flight convection heat transfer from atomized droplets and conduction heat transfer at the rolls rapidly move an alloy’s latent heat. Hot deformation of the semi-solid material in the rolls results in fully consolidated, rapidly-so… more
Date: September 1, 2006
Creator: McHugh, K.M.; Lin, Y.; Zhou, Y.; Johnson, S.B.; Delplanque, J.P. & Lavernia, E.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Underground Corrosion of Activated Metals, 6-Year Exposure Analysis

Description: The subsurface radioactive disposal site located at the Idaho National Laboratory contains neutronactivated metals from non-fuel nuclear-reactor-core components. A long-term underground corrosion test is being conducted to obtain site-specific corrosion rates to support efforts to more accurately estimate the transfer of activated elements in the surrounding arid vadose zone environment. The test uses nonradioactive metal coupons representing the prominent neutron-activated materials buried at … more
Date: March 1, 2006
Creator: Flitton, M. K. Adler & Yoder, T. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Underground Corrosion of Activated Metals in an Arid Vadose Zone Environment

Description: The subsurface radioactive disposal site located at the Idaho National Engineering and Environmental Laboratory contains neutron-activated metals from nonfuel nuclear-reactor- core components. A long-term corrosion test is being conducted to obtain site-specific corrosion rates to support efforts to more accurately estimate the transfer of activated elements in an arid vadose zone environment. The tests use nonradioactive metal coupons representing the prominent neutron-activated material burie… more
Date: April 1, 2002
Creator: Adler Flitton, Mariana Kay; Mizia, Ronald Eugene & Bishop, Carolyn Wagoner
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Reduction of Annealing Times for Energy Conservation in Aluminum

Description: Carnegie Mellon University was teamed with the Alcoa Technical Center with support from the US Dept. of Energy (Office of Industrial Technology) and the Pennsylvania Technology Investment Authority (PTIA) to make processing of aluminum less costly and more energy efficient. Researchers in the Department of Materials Science and Engineering have investigated how annealing processes in the early stages of aluminum processing affect the structure and properties of the material. Annealing at high t… more
Date: August 31, 2005
Creator: Rollett, Anthony D.; Weiland, Hasso; Alvi, Mohammed & Brahme, Abhijit
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Niobium-Tin-Aluminum Alloy Studies

Description: From Abstract : "A proposed constitutional diagram was developed from equilibrium data obtained for the niobium-tin binary alloy system. ... Alloying Nb3Sn with Nb3Al appears to raise the zero field superconducting transformation temperature of Nb3Sn slightly."
Date: February 1963
Creator: Ellis, Thomas Gordon & Wilhelm, Harley A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Underground Corrosion of Activated Metals in an Arid Vadose Zone Environment

Description: The subsurface radioactive disposal site located at the Idaho National Engineering and Environmental Laboratory contains neutron-activated metals from nonfuel nuclear-reactor- core components. A long-term corrosion test is being conducted to obtain site-specific corrosion rates to support efforts to more accurately estimate the transfer of activated elements in an arid vadose zone environment. The tests use nonradioactive metal coupons representing the prominent neutron-activated material burie… more
Date: October 24, 2001
Creator: Adler Flitton, M. K.; Mizia, R. E. & Bishop, C. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An Assessment of Recycled Refractory Material Performance After Two Years of Service in a Carbon Bake Furnace

Description: Material removed from carbon bake furnaces used to manufacture anodes for the production of aluminum metal has historically been disposed by landfill. This material is composed primarily of 50% alumina refractory. in 1997, Alcoa completed a highly successful program to reuse the spent refractories in castables for carbon bake furnace headwalls and flooring, as roadbed aggregate, and in other internal applications. This program recycled/reused 11,000 metric tons of used refractory material (99% … more
Date: October 27, 1999
Creator: Schubert, N.; Bennett, J.P. & Kwong, K.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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