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in subjects: "Copper Oxides"  
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Environmental test program for superconducting materials and devices: Preliminary results of testing program at Savannah River Site

Description: The properties of YBa{sub 2}Cu{sub 3}O{sub 7-x} superconducting tapes designed and fabricated into SAFIRE-type, encapsulated, grounding links by the Ceramic Engineering Department at Clemson University are under investigation. Testing at the Savannah River Site will include gamma irradiation, vibration, and long-term evaluation. The gamma irradiation portion of testing has been completed. The long-term testing began in January and will continue. The vibration test has yet to be started.
Date: May 30, 1991
Creator: Randolph, H. (Westinghouse Savannah River Co., Aiken, SC (United States)) & Verebelyi, D. (Westinghouse Savannah River Co., Aiken, SC (United States) Clemson Univ., SC (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of solar cells based on Cu/sub 2/O. Final progress report May 1, 1979 to April 30, 1980

Description: Investigations conducted over a 12-month period concerning Cu/sub 2/O as a material for low-cost solar cells are reported. Emphasis was placed on (1) Cu/sub 2/O substrate fabrication and characterization; (2) studies of Cu/sub 2/O cell photocurrent; (3) Cu/sub 2/O solar cell studies. Large grain polycrystalline Cu/sub 2/O substrates were fabricated by first oxidizing copper discs at 1050/sup 0/C, and then polishing both sides to obtain 20 mil thick wafers. Optical constants were measured with e… more
Date: June 30, 1980
Creator: Olsen, L. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Environmental test program for superconducting materials and devices: Preliminary results of testing program at Savannah River Site

Description: The properties of YBa{sub 2}Cu{sub 3}O{sub 7-x} superconducting tapes designed and fabricated into SAFIRE-type, encapsulated, grounding links by the Ceramic Engineering Department at Clemson University are under investigation. Testing at the Savannah River Site will include gamma irradiation, vibration, and long-term evaluation. The gamma irradiation portion of testing has been completed. The long-term testing began in January and will continue. The vibration test has yet to be started.
Date: May 30, 1991
Creator: Randolph, H. & Verebelyi, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of Mixed Metal Sorbent / Catalysts for the Simultaneous Removal of Sulfur and Nitrogen Oxides

Description: Simultaneous removal of SO{sub 2} and NO{sub x} using a regenerable solid sorbent will constitute an important improvement over the use of separate processes for the removal of these two pollutants from stack gases and possibly eliminate several shortcomings of the individual SO{sub 2} and NO{sub x} removal operations. The work done at PETC and the DOE-funded research of the investigators on the sulfation and regeneration of alumina-supported cerium oxide sorbents have shown that they can perfo… more
Date: November 30, 1999
Creator: Akyurtlu, Ates & Akyurtlu, Jale F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Developing First-Principles Reactive Force Fields and Densification Process for Y-Doped BaZrO3 Proton-Conducting Ceramics

Description: During the third semi-annual period we have mostly finished a series of QM calculations on relevant metals (Pt, Zr, Y, Ba), metal alloys (Y/Zr), metal oxides (ZrO{sub 2}, Y{sub 2}O{sub 3}, BaO) and Y-doped BaZrO{sub 3}. Based on these data we started developing ReaxFF for further MD simulations of different physico-chemical processes in the electrolyte and at the electrode/electrolyte interface. To accelerate the densification process of BaZrO{sub 3} ceramics at lower temperature an initial scr… more
Date: April 30, 2004
Creator: Merinov, Boris; Duin, Adri van; Haile, Sossina & Goddard, William A., III
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Transient response of single-domain Y-Ba-Cu-O rings to pulsed magnetic fields.

Description: Shielding current limits and magnetic diffusion characteristics have been measured at 77 K for a set of YBCO single-domain rings. These were fabricated from melt-textured cylindrical YBCO monoliths that were densified to nearly 100%, and then oriented from a single seed. The rings were surrounded by a drive coil that can, under pulse conditions, achieve applied magnetic fields in excess of 1 T and induce currents in excess of 50 kA. Simultaneous magnetic characterization with a Rogowski coil an… more
Date: July 30, 2002
Creator: Askew, T. R.; Weber, J. M.; Cha, Y. S.; Claus, H. & Veal, B. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Practical superconductor development for electrical power applications quarterly report for the period ending September 30, 1997

Description: This is a multiyear experimental research program focused on improving relevant material properties of high-T{sub c} superconductors and on development of fabrication methods that can be transferred to industry for production of commercial conductors. The development of teaming relationships through agreements with industrial partners is a key element of this program. Recent work on strain tolerance of Bi-2223 tapes, AC downlink construction, fundamental studies of flux pinning, and application… more
Date: October 30, 1997
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical Technology Division, Unit Operations Section Monthly Progress Report, July 1961

Description: Thoria denitrator products from 0.04 to 0.066 N/Th ratio were dispersed into sols at N/Th radios of 0.11 to 0.19 and processed by the sol-gel technique to produce final compacted thoria products with little significant variation. Experimental results of H/sub 2/-CuO reaction in the helium purification work further substantiated the mathematical model. The elutions of uranyl sulfate loaded Dowex 2lK with chloride apparently involved the diffusion of both the sulfate ions and the uranyl ions. The… more
Date: January 30, 1962
Creator: Whatley, M. E.; Haas, P. A.; Horton, R. W.; Ryon, A. D.; Suddath, J. C. & Watson, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

REDUCTION OF CUPRIC OXIDE BY HYDROGEN. I. FUNDAMENTAL KINETICS

Description: Basic studies of the kinetics of the reduction of copper oxide were made to establish the effect of the solid phase on the over-all reaction kinetics The reaction CuO + H/sub 2/ at the only rea Cu + H/sub 2/O consisted of an induction stage, an acceleration or autocatalytic stage terminating at about 35% reduction of the exide, and a decreasing-rate stage The reduction rates for each stage were dependent on the nature of the initial oxide, the degree of subdivision of the oxide, and the tempera… more
Date: March 30, 1960
Creator: Bond, W. D. & Clark, W. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Combustion Synthesis and Engineering Nanoparticles for Electronic, Structural and Superconductor Applications. Final Report, May 31, 1992--May 30, 1996

Description: Dense, nanocrystalline ceramic articles of doped ZrO{sub 2} (for use in solid electrolytes, oxygen sensors, electrode materials, thermal barrier coatings, etc.), BaTiO{sub 3} (for capacitor applications), and YBa{sub 2}Cu{sub 3}O{sub 7-x} (a high-temperature superconductor with uses, e.g., in magnetic flux trapping and high-speed capacitor applications) were prepared by the new nanofabrication process that has been developed in this research program. The process consists of two steps: synthesis… more
Date: May 30, 1996
Creator: Stangle, G. C.; Schulze, W. A. & Amarakoon, V. R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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X-Ray and [Gamma]-Ray Spectroscopy of Solids Under Pressure. Annual Technical Progress Report, November 1996-October 1997

Description: This report describes our recent synchrotron x-ray absorption fine structure (XAFS) measurements on a number of systems that undergo pressure induced changes in local structure at high pressure. Our general technique is based upon a pressure cell which utilizes scintered boron carbide anvils, since diamond anvils generally produce Bragg glitches which spoil the high quality EXAFS necessary for precision structural measurements. Sample pressure is determined at the beam-line by measuring and ana… more
Date: April 30, 1997
Creator: Ingalls, R.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Trilayer Josephson junctions produced by atomic layer-by-layer FORCE (Flexible Oxide Reaction Controlled Epitaxy). Final report

Description: Lawrence Livermore National Laboratory is working with Varian Associates to lay the groundwork for the routine, reproducible fabrication of high-temperature superconducting trilayer structures. The objectives of this program are: To identify high temperature, superconducting materials, metallic and insulating barrier materials and associated substrate and electrode materials for engineered trilayer structures that can provide Josephson Junction devices with desired characteristics for sensor or… more
Date: September 30, 1995
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of in-Situ Control Diagnostics for Application of Epitaxial Superconductor and Buffer Layers

Description: The recent achievements of critical currents in excess of 1x10{sup 6}amp/cm{sup 2} at 77K in YBCO deposited over suitably textured buffer/substrate composites have stimulated interest in the potential fabrication of these coated conductors as wire. Numerous approaches and manufacturing schemes for producing coated conductor wire are currently being developed. Recently, under the U. S. Department of Energy (DOE's) sponsorship, the University of Tennessee Space Institute (UTSI) performed an exten… more
Date: June 30, 1999
Creator: Winkleman, B. C.; Giel, T. V., Jr. & Cunningham, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fluidized-bed copper oxide process. Phase IV. Conceptual design and economic evaluation, Volume I. Final report

Description: Universal Oil Products, Inc. (UOP) of Des Plaines, Illinois has contracted A.E. Roberts & Associates, Inc. (AERA) of Atlanta, Georgia to prepare a sensitivity analysis for the development of the Fluidized-bed Copper Oxide (FBCO) process. As proposed by AERA in September 1991, development of the FBCO process design for a 500 mega-watt (MW) unit was divided into three tasks: (1) Establishment of a Conceptual Design, (2) Conceptual Design, (3) Cost Analysis Task 1 determined the basis for a concep… more
Date: November 30, 1994
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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