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Flash hydropyrolysis of coal. Quarterly report No. 2, April 1--June 30, 1977

Description: With the combination of low hydrogen to coal ratio, high coal feed rate and larger total quantity of coal fed, considerable liquid product is being condensed and collected. Experimental runs conducted at 750/sup 0/C and 800/sup 0/C at pressures up to 3000 psi of hydrogen show overall hydrocarbon yields and particularly gaseous hydrocarbon yields to increase with pressure to approximately 60 percent at 3000 psi. At 750/sup 0/C approximately one third (20 percent) of this yield is in the form of … more
Date: July 1, 1977
Creator: Fallon, P
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermal responses of tokamak reactor first walls during cyclic plasma burns

Description: The CINDA-3G computer code has been adapted to analyze the thermal responses and operating limitations of two fusion reactor first-wall concepts under normal cyclic operation. A component of an LMFBR computer has been modified and adapted to analyze the ablative behavior of first-walls after a plasma disruption. The first-wall design concepts considered are a forced-circulation water-cooled stainless steel panel with and without a monolithic graphite liner. The thermal gradients in the metal wa… more
Date: January 1, 1977
Creator: Smith, D. L. & Charak, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nuclear performance calculations for the ELMO Bumpy Torus Reactor (EBTR) reference design

Description: The nuclear performance of the ELMO Bumpy Torus Reactor reference design has been calculated using the one-dimensional discrete ordinates code ANISN and the latest available ENDF/B-IV transport cross-section data and nuclear response functions. The calculated results include estimates of the spatial and integral heating rate with emphasis on the recovery of fusion neutron energy in the blanket assembly and minimization of the energy deposition rates in the cryogenic magnet coil assemblies. The … more
Date: December 1, 1977
Creator: Santoro, R. T. & Barnes, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis and evaluation of new cathode materials for rechargeable lithium batteries. Annual report, April 26, 1976-September 15, 1977

Description: The objective of the first year of this study was the investigation of two new classes of complex sulfide materials of potential value for ambient and high temperature, high energy rechargeable batteries with lithium anodes. The two new classes were the sulfospinels and simple and mixed layered disulfides of transitional metals of groups IVB and VB. In addition, three simple sulfides, CoS, CoS/sub 2/ and FeS/sub 2/ were also investigated. Studies of the synthesis methods have resulted in the de… more
Date: December 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Design of duplex low carbon steels for improved strength: weight applications

Description: Duplex ferrite-martensite (DFM) steels with excellent combinations of strength and formability have been selected from first principles, and their microstructure-property relationships established through a systematic investigation of a series of ternary Fe/X/0.1 C steels (X being varying amount of Cr and Si). Duplex processing consists of initial austenitization and quenching to form 100% martensite, followed by annealing in the (..cap alpha.. + ..gamma..) range and subsequent quenching. The r… more
Date: August 1, 1977
Creator: Koo, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Catalysis studies

Description: The New Research Initiatives Program (NRIP) project on catalysis in Los Alamos Scientific Laboratory (LASL) Group CMB-8 has made significant progress towards performing the first basic in situ experimental studies of heterogeneous catalysis on solid compound surfaces in a LEED-Auger system. To further understand the surface crystallography of a possible catalyst compound, LEED-Auger measurements were made on UO/sub 2/(approximately 100) vicinal surfaces. These (approximately 100) vicinal surfac… more
Date: November 1, 1977
Creator: Taylor, T. N. & Ellis, W. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Low alloy steels for thick wall pressure vessels. Yearly report, October 1, 1976--September 30, 1977

Description: A summary is presented of progress during the first year of a program to modify current ferrous alloys and develop new low-alloy steels that can be field-fabricated into large-diameter, thick-walled pressure vessels for commercial coal gasifiers. Determination of design criteria for the pressure vessel steels, incorporating information gained through review of the literature and gained through interaction with industry, national laboratory personnel, and research contractors is described. Work … more
Date: January 1, 1977
Creator: Horn, R. M.; Parker, E. R. & Zackay, V. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Synthesis and characterization of an N-(2-hydroxyethyl)-ethylenediaminetriacetic acid resin

Description: A chelating ion-exchange resin with N-(2-hydroxyethyl)ethylene-diaminetriacetic acid (HEDTA) used as the ligand chemically bonded to XAD-4 by an ester linkage, HEDTA-4, was synthesized. It is stable under normal experimental conditions with the liquid chromatograph. The structure of the resin was confirmed by an infrared spectrum, and by potentiometric titrations. The capacity of the resin was also obtained by potentiometric titration and by a nitrogen analysis. The resin was used to pack a col… more
Date: October 1, 1977
Creator: Lai, Y. F.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Thermal aging of annealed 2 1/4 Cr-1 Mo steel

Description: Four commercially annealed tubing heats of 2/sup 1///sub 4/ Cr-1 Mo steel were aged at 454, 510, and 566/sup 0/C for times up to 20,000 hr. Tensile tests were made at room temperature and at the aging temperature on specimens from each heat for each aging condition. Thermal aging significantly affected the strength, the effect being greatest for tests at the aging temperature. The amount and magnitude of the strength changes varied from one heat to the other. After aging for 20,000 hr at 454 an… more
Date: January 1, 1977
Creator: Klueh, R.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Practical blanket design for a toroidal fusion reactor

Description: This blanket concept will be examined for use in a tokamak, but the blanket described here is for an Elmo Bumpy Torus Reactor. In this reactor, the plasma region has a diameter of 2.4 meters under the coils, and a diameter of 3.4 meters in the ''bumps'' between coils. For either diameter the segments are divided into twelve buckets in the poloidal plane. There are nine toroidal segments between the center lines of two coils. The blanket is of uniform thickness for all segments, and this dimensi… more
Date: January 1, 1977
Creator: Bettis, E. S.; Barnes, J. M.; Huxford, T. J.; Liu, K. C.; Santoro, R. T. & Watts, H. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Composition of eta carbide in Hastelloy N after aging 10,000 hr at 815/sup 0/C

Description: The composition of the eta carbide in Hastelloy N containing 0.7 wt percent Si in the alloy approaches M/sub 12/C, rather than M/sub 6/C as indicated in the alloy literature. The silicon content of the eta phase in this case was about 25 at. percent, much higher than has been observed in less highly alloyed material. The data do not permit a definition of the limiting compositions of the phases.
Date: November 1, 1977
Creator: Leitnaker, J. M.; Potter, G. A.; Bradley, D. J.; Franklin, J. C. & Laing, W. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of a pulsed eddy-current system for subsurface flaw detection

Description: A pulsed eddy-current system was evaluated for subsurface flaw-detection capabilities in stainless steel. The standard probes, designed for flaw detection in thin specimens, were able to indicate the presence of 3-mm-holes 3 mm below the surface of a stainless steel test block. A special probe was constructed in order to obtain a deeper penetration into the material. With this probe, 3-mm-subsurface holes to a depth of 9 mm could be detected. No optimization of probe design parameters was attem… more
Date: December 1, 1977
Creator: Reimann, K.J. & Sather, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Relaxation behavior of 2 1/4 Cr--1 Mo steel under multiple loading

Description: Multiple-loading relaxation data for annealed 2/sup 1///sub 4/ Cr-1 Mo steel are reported for times to 100 hr and for temperatures in the range 450 to 566/sup 0/C. At 450 and 482/sup 0/C the relaxation strength rises with the plastic flow stress, and recovery phenomena are not very significant in the time span of concern. At 510, 538, and 566/sup 0/C the relaxation behavior during the first loading is unusual in the sense that for a period the relaxation rate is almost independent of stress. Th… more
Date: November 1, 1977
Creator: Swindeman, R. W. & Klueh, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermal stress and creep fatigue limitations in first wall design

Description: The thermal-hydraulic performance of a lithium cooled cylindrical first wall module has been analyzed as a function of the incident neutron wall loading. Three criteria were established for the purpose of defining the maximum wall loading allowable for modules constructed of Type 316 stainless steel and a vanadium alloy. Of the three, the maximum structural temperature criterion of 750/sup 0/C for vanadium resulted in the limiting wall loading value of 7 MW/m/sup 2/. The second criterion limite… more
Date: January 1, 1977
Creator: Majumdar, S.; Misra, B. & Harkness, S.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of ferromagnetic spinels for optical isolation at 10. 6. mu. m. Progress report, May 1, 1977--July 31, 1977

Description: An analysis of factors which influence the optical transparency of hot-pressed CdCr/sub 2/S/sub 4/ at 10.6 ..mu..m was made. It was found that multiphonon absorption, an intrinsic process, is the factor which limits the ultimate achievable absorption coefficient, ..cap alpha.., at 10.6 ..mu..m. Several extrinsic processes have also been found to affect the transmission of hot-pressed CdCr/sub 2/S/sub 4/. In sufficient concentration, oxygen appearing as SO/sub 4//sup 2 -/ or similar sulfate comp… more
Date: July 1, 1977
Creator: Teegarden, K.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Physiopathology of blood platelets and development of platelets substitutes. Progress report, August 1, 1976--October 31, 1977. [/sup 51/Cr]

Description: Progress is reported on the following research projects: the effect of estrogen on platelet aggregability and thrombus formation; the antithrombotic effect of platelet inhibiting agents in a bench model of artificial kidney; the arrest of hemorrhage in severely alloimmunized thrombocytopenic patients; and in vivo elution of /sup 51/Cr from labeled platelets induced by antibody. (HLW)
Date: July 31, 1977
Creator: Baldini, M G
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigations of several interference effects in high frequency plasmas of analytical importance

Description: Investigations of the extent to which certain inter-element or interference effects occur in a radiofrequency-excited inductively coupled plasma (ICP) are reported. Under conditions normally employed for analytical purposes, it is shown that: (a) two solute vaporization interferences often observed in flames are eliminated or reduced to negligible proportions in the plasma; (b) increasing concentrations of an easily ionizable element (Na) up to concentrations of 6900 ..mu..g/ml exerted an unusu… more
Date: February 1, 1977
Creator: Larson, G.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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JBK-75 microstructure specification recommendation. [Modified A-286]

Description: Since the ASTM-E-45 standard for microcleanliness is not applicable to superalloys like JBK-75 stainless steel (Modified A-286), Rocky Flats should adopt the Ladish microcleanliness standard (APML Cleanliness Classification of High Temperature Alloys Chart, 1971), as a guide for setting material acceptance specifications for JBK-75. Inclusion ratings of S-2, N-2, C-2, and M-2 should be acceptable. The microstructure should have a grain size of 5 or finer, but not smaller than 9, and microsegreg… more
Date: October 31, 1977
Creator: Brewer, A. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Structure of ordered alloys

Description: Recent progress in studying ordered alloys by lattice fringe imaging is reviewed. Firstly the optimum experimental conditions for producing images suitable for interpretation are outlined. Secondly lattice and conventional imaging are compared and the advantages of the former for obtaining atomic level detail and compositional estimates are described. Finally some important results from this program are discussed, particularly the evidence for a microdomain model of short-range order and the fi… more
Date: August 1, 1977
Creator: Sinclair, R. & Thomas, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Predicted strains in austenitic stainless steels at stresses above yield

Description: Tensile results on austenitic stainless steels were analyzed to develop means for predicting strains at stresses above yield for reactor regulatory applications. Eight heats each of types 316 and 304 were tested at 24, 93, 204, and 316/sup 0/C as mill-annealed and at 24/sup 0/C after reannealing. The effects of heat-to-heat variations on total strain (to 5%) at discrete stress levels were portrayed by a rational polynomial incorporating three constants that relate to the basic features of the t… more
Date: January 1, 1977
Creator: Hammond, J.P. & Sikka, V.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Determination of nitrogen in boron carbide with the Leco UO-14 Nitrogen Determinator

Description: Use of various metals as fluxes for releasing nitrogen from boron carbide in the Leco Nitrogen Determinator was investigated. Metals such as iron, chromium, and molybdenum that wet the graphite crucible all promoted nitrogen release. Tin, copper, aluminum, and platinum did not wet the graphite and were of no value as fluxes. A procedure for sample handling and the resulting performance of the method are described. The precision at 0.06 to 0.6 percent nitrogen averaged 4 percent relative standar… more
Date: November 1, 1977
Creator: Gardner, R. D.; Ashley, W. H. & Henicksman, A. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High-velocity impact tests involving thin spherical shells of tantalum and 304 stainless steel

Description: This experimental program generated data to improve computer-code modeling of impact phenomena. The improved computation technique will be used to design a fissile-material container able to withstand a 335 m/s impact. The program involved flyer-plate-impact tests using thin shells of annealed 304 stainless steel and annealed tantalum at impact velocities of 28 to 180 m/s. No active instrumentation was used in this study; instead, all data were derived from measurements of test specimens. Pre- … more
Date: August 26, 1977
Creator: Steffan, K. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Coal technology program. Progress report, September 1977

Description: A successful hydrocarbonization experiment at 300 psi of hydrogen and approximately 1050/sup 0/F was completed with Illinois No. 6 coal that had been chemically pretreated with aqueous CaO and NaOH. In pressurized carbonization, one successful experiment at approximately 1100/sup 0/F and 415 psi of methane was completed with vacuum distillation residue from the H-Coal process. In the thick section pressure vessel work, procedures are being developed with the DATA TRAK heat treating facility to … more
Date: October 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Grain boundary cavity growth under applied stress and internal pressure

Description: The growth of grain boundary cavities under applied stress and internal gas pressure was investigated. Methane gas filled cavities were produced by the C + 4H reversible CH4 reaction in the grain boundaries of type 270 nickel by hydrogen charging in an autoclave at 500/sup 0/C with a hydrogen pressure of either 3.4 or 14.5 MPa. Intergranular fracture of nickel was achieved at a charging temperature of 300/sup 0/C and 10.3 MPa hydrogen pressure. Cavities on the grain boundaries were observed in … more
Date: August 1, 1977
Creator: Mancuso, J.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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