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Model for H/sup -/ and D/sup -/ production by hydrogen backscattering

Description: The Marlowe Monte-Carlo backscattering code has been used to calculate particle reflection coefficients and energy distributions for H, D incident upon Li, K, Ni, Cu, Mo, Ag, Cs, Hf, W, Pt, and U surfaces. The backscattered energy and angular distributions are combined with a model for formation and survival probabilities for H/sup -/, D/sup -/ leaving the surface. A least-squares fit of experimental measurements of H/sup -/ yields from the composite surface, Cs/Cu, has been used to obtain two … more
Date: May 27, 1980
Creator: Hiskes, J.R. & Schneider, P.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Dielectric coatings on metal substrates

Description: Large aperture, beryllium substrate-based mirrors have been used to focus high intensity pulsed laser beams. Finished surfaces have high reflectivity, low wavefront distortion, and high laser damage thresholds. This paper describes the development of a series of metallic coatings, surface finishing techniques, and dielectric overcoatings to meet specified performance requirements. Beryllium substrates were coated with copper, diamond-machined to within 5 micro-inches to final contour, nickel pl… more
Date: July 27, 1976
Creator: Glaros, S. S.; Baker, P. & Milam, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Mechanical properties of crystalline solids. Progress report, December 1, 1975--November 30, 1976

Description: The deformation model for non-elastic deformation in the grain matrix based on a mechanical equation of state was verified by comparing the predictions of the model with experimental data. The data of Type 316 stainless steel and nickel were used and were obtained in load relaxation and anelasticity tests. The same model was found to be successful in describing in-reactor creep and deformation. Work is in progress on the investigation of the driving force and the kinetics of stress induced cavi… more
Date: August 27, 1976
Creator: Li, C. Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SALTSTONE 1QCY08 TCLP RESULTS

Description: A Saltstone waste form was prepared in the Savannah River National Laboratory from a Tank 50H sample and Z-Area premix material for the first quarter of calendar year 2008 (1QCY08). After the prescribed 28 day cure, samples of the saltstone were collected, and the waste form was shown to meet the South Carolina Hazardous Waste Management Regulations (SCHWMR) R.61-79.261.24 and R.61-79.268.48(a) requirements for a nonhazardous waste form with respect to RCRA metals and underlying hazardous const… more
Date: January 27, 2009
Creator: Cozzi, A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Oxidative Dissolution of Nickel Metal in Hydrogenated Hydrothermal Solutions

Description: A platinum-lined, flowing autoclave facility is used to investigate the solubility behavior of metallic nickel in hydrogenated ammonia and sodium hydroxide solutions between 175 and 315 C. The solubility measurements were interpreted by means of an oxidative dissolution reaction followed by a sequence of Ni(II) ion hydrolysis reactions: Ni(s) + 2H+(aq) = Ni2+(aq) + H2(g) and Ni{sup 2+}(aq) + nH{sub 2}O = Ni(OH){sub n}{sup 2-n}(aq) + nH{sup +}(aq) where n = 1 and 2. Gibbs energies associated wit… more
Date: March 27, 2007
Creator: Ziemniak S. E.; Guilmette, P. A.; Turcotte, R. A. & Tunison, H. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Demonstration of packaging of Fernald Silo I waste in chemically bonded phosphate ceramic.

Description: This paper summarizes our experience in bench-scale packaging of Fernald Silo I waste in chemically bonded phosphate ceramics. The waste was received from the Fernald Environmental Management Project (FEMP), and its treatability was studied in our laboratory. This waste contained As{sup 5+}, Ba, Cr{sup 6+}, Ni, Pb, Se{sup 4+}, and Zn as the hazardous contaminants. In addition, the total specific activity of all the radioactive isotopes in the waste was 3.85 {micro}Ci/g, of which that of radium … more
Date: January 27, 1999
Creator: Wagh, A. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Trip report: National Research Corporation, Cambridge, MA, July 16, 1953

Description: On July 16, 1953 I discussed with P.J. Clough and J.H. Durant the NRC progress on providing bond layers for extended surface fuel elements. The corrosion testing of four uranium samples, nickel coated by an NRC technique, came to an abrupt and premature end as a result of failures in the testing equipment. The coatings were ruined in the mishap. Similarly coated samples are in the process of being prepared. The corrosion tests will be re-initiated upon completion of the samples.
Date: July 27, 1953
Creator: Pocalyko, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies for the Preparation of Zirconium-Clad Uranium-10 W/O Molybdenum Fuel Pins

Description: Production methods for producting homogeneous uranium-10 wt.% molybdenum fuel-alloy pin with a uniform zirconium cladding have been studied. The effect of various impurities has been investigated and the nature of and methods for ellminating cracking in swaged fuel pins have been examined. A major portion of the results is based on the study of material produced from 25-lb ingot castings. Small expertmental-scale ingots were also employed in impurity, heat-treatment, and cracking studies. On th… more
Date: October 27, 1958
Creator: Fox, J. B.; Cheney, D. M.; Bauer, A. A. & Dickerson, R. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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METALLOGRAPHIC TECHNIQUES FOR BOND STUDY OF ALUMINUM-CLAD NICKEL-PLATED URANIUM FUEL ELEMENTS

Description: Various metallographic techniques were employed to determine the best method for the preparation of Al-clad, Ni-plated U fuel elements for bond studies. The quality of the final results and the speed of the preparation were the most important factors to be considered. The procedure presented was found to yield the most advantageous results in the minimum amount of time. (W.L.H.)
Date: March 27, 1957
Creator: Woods, H.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Determining Micromechanical Strain in Nitinol

Description: Nitinol is a superelastic alloy made of equal parts nickel and titanium. Due to its unique shape memory properties, nitinol is used to make medical stents, lifesaving devices used to allow blood flow in occluded arteries. Micromechanical models and even nitinol-specific finite element analysis (FEA) software are insufficient for unerringly predicting fatigue and resultant failure. Due to the sensitive nature of its application, a better understanding of nitinol on a granular scale is being purs… more
Date: September 27, 2006
Creator: Strasberg, Matthew
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Full Scale Regenerable HEPA Filter Design Using Sintered Metal Filter Elements: Final Technical Report

Description: A Department of Energy funded contract involved the development of porous metal as a HEPA filter, and the subsequent design of a full-scale regenerable HEPA filtration system (RHFS). This RHFS could replace the glass fiber HEPA filters currently being used on the high level waste (HLW) tank ventilation system with a system that would be moisture tolerant, durable, and cleanable in place. The origins of the contract are a 1996 investigation at the Savannah River Technology Center (SRTC) regardin… more
Date: November 27, 2002
Creator: Ramos, Gil; Rubow, Kenneth & Sekellick, Ronald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of a Catalyst/Sorbent for Methane Reforming

Description: This work has led to the initial development of a very promising material that has the potential to greatly simplify hydrocarbon reforming for the production of hydrogen and to improve the overall efficiency and economics of the process. This material, which was derived from an advanced calcium-based sorbent, was composed of core-in-shell pellets such that each pellet consisted of a CaO core and an alumina-based shell. By incorporating a nickel catalyst in the shell, a combined catalyst and sor… more
Date: September 27, 2004
Creator: Shanks, B. H.; Wheelock, T. D.; Satrio, Justinus A.; Diehl, Timothy & Vollmer, Brigitte
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Batch Wafer Scale LIGA Assembly and Packaging Technique vai Diffusion Bonding

Description: A technique using diffusion bonding (or solid-state welding) has been used to achieve batch fabrication of two- level nickel LIGA structures. Interlayer alignment accuracy of less than 1 micron is achieved using press-fit gauge pins. A mini-scale torsion tester was built to measure the diffusion bond strength of LIGA formed specimens that has shown successful bonding at temperatures of 450"C at 7 ksi pressure with bond strength greater than 100 Mpa. Extensions to this basic process to allow for… more
Date: January 27, 1999
Creator: Christenson, T.R. & Schmale, D.T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Torsion Testing of Diffusion Bonded LIGA Formed Nickel

Description: A test technique has been devised which is suitable for the testing of the bond strength of batch diffusion bonded LIGA or DXRL defined structures. The method uses a torsion tester constructed with the aid of LIGA fabrication and distributed torsion specimens which also make use of the high aspect ratio nature of DXRL based processing. Measurements reveal achieved bond strengths of 130MPa between electroplated nickel with a bond temperature of 450 C at 7 ksi pressure which is a sufficiently low… more
Date: January 27, 1999
Creator: Buchheit, T.E.; Christenson, T.R. & Schmale, D.T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Advanced technologies for decomtamination and conversion of scrap metal

Description: The Department of Energy (DOE) faces the task of decommissioning much of the vast US weapons complex. One challenge of this effort includes the disposition of large amounts of radioactively contaminated scrap metal (RSM) including but not limited to steel, nickel, copper, and aluminum. The decontamination and recycling of RSM has become a key element in the DOE's strategy for cleanup of contaminated sites and facilities. Recycling helps to offset the cost of decommissioning and saves valuable s… more
Date: May 27, 1999
Creator: MacNair, Valerie; Sarten, Steve; Muth, Thomas & Mishra, Brajendra
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Progress report on the evaluation of porous cathode for the electrochemical reduction of nitrates and nitrites in liquid wastes

Description: This report describes the experimental and modeling work performed to evaluate porous cathodes for the electrochemical reduction of nitrites in liquid wastes. The experiments were done using the MP{dagger} cell with two different porous cathodes: nickel foam and TySAR{trademark}SB{double_dagger}. The experimental results are compared with each other and to those obtained with a planar nickel cathode. The results show that the ammonia production reaction is the dominant cathodic reaction ({appro… more
Date: December 27, 1995
Creator: Hobbs, D. T.; Jha, K.; Weidner, J. W. & White, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of Varied Strontium-Transuranic Precipitation Chemistries for Crossflow

Description: Precipitation chemistries for strontium and transuranic (TRU) removal have been tested for crossflow filterability and lanthanide removal with simulants of Hanford tank 241-AN-107 supernate. This is the initial work indicating the usefulness of a strontium and permanganate precipitation process as applied to the Hanford River Protection Project. Precipitations with both ferric and ferrous iron were shown to be at least two orders of magnitude less filterable than a 0.1 gpm/ft target average flu… more
Date: July 27, 2000
Creator: Nash, C.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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