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in subjects: "Iron"

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First order study for an iron core OH system for TNS

A simple comparison has been made between an air core and an iron core ohmic heating system for a particular device, and it was shown that the peak power requirements can be substantially reduced by the use of an iron core to power levels handled by industry today. It was also shown that for an ohmic heating system initiated plasma that the cost of the iron core ohmic heating power system (iron core, dual rectifier, and DC switch) is less than the cost for a subset of the power system for an ai… more

Date: January 1, 1977

Creator: Ballou, J. K. & Schultz, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Internal magnetic fields in hcp-iron

The magnetic behavior of hcp-Fe (epsilon iron) has been investigated by the Moessbauer Effect over a wide range of temperature T, pressure P, and applied magnetic field H/sub 0/. The internal field H/sub i/ of the induced moment is given by H/sub i/ = 0.20 +- .01 H/sub 0/ and is independent of T and P. Enhanced paramagnetism is suggested as the most likely origin for a contribution of this magnitude to H/sub i/.

Date: January 1, 1982

Creator: Taylor, R. D.; Cort, G. & Willis, J. O.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Price 1/sup 0/ x 2/sup 0/ NTMS area, Utah. Data report (abbreviated)

Surface sediment samples were collected at 1444 sites, at a target sampling density of one site per 13 square kilometers. Ground water samples were collected at 137 sites. Neutron activation analysis results are given for uranium and 16 other elements in sediments, and for uranium and 9 other elements in ground water. Mass spectrometry results are given for helium in ground water. Field measurements and observations are reported for each site. Analytical data and field measurements are presente… more

Date: July 1, 1980

Creator: Cook, J. R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Sensitivity of primary knock-on atom spectra and displacement per atom cross sections to different secondary neutron energy and angular distributions and ''in-group'' weighting schemes

The sensitivity of primary knock-on atom (PKA) spectra and displacement per atom (DPA) cross sections to different secondary neutron energy and angular distributions and ''in-group'' weighting schemes is investigated. It is shown that the sensitivity of the PKA spectra and DPA cross sections for the (n,n' unresolved) and (n,2n) reactions in Fe to different angular distributions and the same secondary neutron spectrum is reasonably large (approximately 15%), whereas the … more

Date: January 1, 1978

Creator: Gabriel, T. A. & Bishop, B. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Magnetic excitations in transition-metal ferromagnets. Recent progress and future prospects on neutron scattering experiments

A review is given on current neutron scattering experiments at Brookhaven National Laboratory on transition-metal ferromagnets Ni, Fe, Pd/sub 2/MnSn and MnSi. The scattering intensity in constant-energy scans, observed above T/sub c/ in all of these materials, exhibited a clear peak at finite momentum transfers. Using a simple scattering function with double-Lorentzian shape, we demonstrate that this peak is a manifestation of simple diffusive spin fluctuations. Experimental results of several … more

Date: January 1, 1984

Creator: Uemura, Y.J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Molecular ingredients of heterogeneous catalysis

The purpose of this paper is to present a review and status report to those in theoretical chemistry of the rapidly developing surface science of heterogeneous catalysis. The art of catalysis is developing into science. This profound change provides one with opportunities not only to understand the molecular ingredients of important catalytic systems but also to develop new and improved catalyst. The participation of theorists to find answers to important questions is sorely needed for the soun… more

Date: June 1, 1982

Creator: Somorjai, G.A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Wells 1/sup 0/ x 2/sup 0/ NTMS area, Nevada. Data report (abbreviated)

Surface sediment samples were collected at 1336 sites, at a target sampling density of one site per 13 square kilometers. Ground water samples were collected at 112 sites. Neutron activation analysis results are given for uranium and 16 other elements in sediments, and for uranium and 9 other elements in ground water and surface water. Mass spectrometry results are given for helium in ground water. Field measurements and observations are reported for each site. Data from ground water and surfac… more

Date: July 1, 1980

Creator: Cook, J. R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Atomic structure of clusters through chemical reactions

Techniques for the probing of isolated metal cluster structure through adsorbate binding patterns will be described. The saturation of clusters with reagents such as ammonia and nitrogen provides information on the number of preferred binding sites for these reagents. The dependence of this number on cluster size can suggest particular structural themes. The equilibrium reaction with water can be used to identify cluster sizes having especially enhanced binding for the water molecule. Again, th… more

Date: January 1, 1991

Creator: Riley, S.J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Effect of cation exchange on the subsequent reactivity of lignite chars to steam. [108 references]

The purpose of this investigation is to determine the role which cations in coal play in the subsequent reactivity of chars. It is hoped that this investigation will aid in an understanding of the catalytic nature of inorganic constituents in coal during its gasification. It was found that increased heat treatment temperature decreased reactivity. The decrease in reactivity was shown to be due, at least in part, to the changes in the nature of the cation with increased heat treatment temperatur… more

Date: March 1, 1977

Creator: Hippo, E. J. & Walker, Jr., P. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Effect of liquid waste discharges from steam generating facilities

This report contains a summary of the effects of liquid waste discharges from steam electric generating facilities on the environment. Also included is a simplified model for use in approximately determining the effects of these discharges. Four basic fuels are used in steam electric power plants: three fossil fuels--coal, natural gas, and oil; and uranium--presently the basic fuel of nuclear power. Coal and uranium are expected to be the major fuels in future years. The following power plant e… more

Date: September 1, 1977

Creator: McGuire, H.E. Jr.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Development of improved iron Fischer-Tropsch catalysts

The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.

Date: January 15, 1990

Creator: Bukur, D.B. & Patel, S.A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Energy use in Japan and the United States

This comparative study was undertaken to explain in part the per capita differential between the two countries. In the introduction, the ratios of energy per capita and energy per dollar of Gross Domestic Product (GDP) are presented. The exchange rates utilized to convert GDP to a common currency are discussed in detail. Brief sections on the energy supply and electric generation situation in Japan are included for background information, followed by the body of the report devoted to the energy… more

Date: August 1, 1977

Creator: Doernberg, A

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Measurement of sin/sup 2/theta/sub w/ in Semileptonic nu Fe and anti nu Fe Interactions

We report results from neutral current scattering of muon neutrinos and antineutrinos on iron nuclei by the CCFRR experiment at Fermilab. Our objective is the measurement of sin/sup 2/theta/sub w/ from inclusive semileptonic neutrino-nucleon interactions. Such a measurement, even though it is subject to more corrections than the analogous measurement in neutrino-electron scattering (e.g. due to the presence of a strange quark sea in the nucleon), has a high degree of statistical accuracy and ma… more

Date: October 1983

Creator: Blair, R. E.; MacFarlane, D. B.; Messner, R. L.; Novikoff, D. B.; Purohit, M. V.; Merritt, F. S. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Spectra in the 60 )angstrom) to 345 )angstrom) wavelength region of elements injected into the PLT tokamak

High resolution spectra of the elements Fe, Ni, Zn, Ge, Se, and Mo injected into the PLT tokamak were recorded by the 2-meter Schwob-Fraenkel soft X-ray multichannel spectrometer (SOXMOS). Spectra were recorded every 50 ms during the time before and after injection. The spectral lines of the injected element were very strong in the spectrum recorded immedately after injection, and the transition in the injected element were easily distinguished from the transitions in te intrinsic elements (C, … more

Date: March 1, 1988

Creator: Wouters, A.; Schwob, J.L.; Suckewer, S.; Seely, J.F.; Feldman, U. & Dave, J.H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Muon Spin-Rotation Study on Magnetite

Muon spin-rotation (..mu..SR) results on synthetic single crystals of magnetite (Fe/sub 3/O/sub 4/) support the idea of muon bond formation in oxides. The anomaly in the temperature dependence of the ..mu..SR signal observed in Fe/sub 3/O/sub 4/ may be attributed to the existence of molecular polarons in the Verwey transition-temperature region.

Date: January 1, 1982

Creator: Boekema, C.; Brabers, V. A. M.; Denison, A. B.; Heffner, R. H.; Hutson, R. L.; Leon, M. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Soft x-ray resonant magnetic scattering study of thin films and multilayers

A brief review of using soft x-ray resonant magnetic scattering in the study of magnetic thin films and multilayers is given. Results from recent studies of thin Fe films and Fe/Gd multilayers are used as examples to demonstrate the information can be obtained and the unique features of this technique. Comparison is also made with related techniques: magneto-optical Kerr effect, Faraday effect, and magnetic circular dichroism. 9 refs., 4 figs.

Date: January 1, 1991

Creator: Kao, C. C.; Johnson, E. D.; Hastings, J. B.; Siddons, D. P. (Brookhaven National Lab., Upton, NY (United States)) & Vettier, C. (European Synchrotron Radiation Facility, 38 - Grenoble (France))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Hydrogenation of CO and CO/sub 2/ on clean rhodium and iron foils. Correlations of reactivities and surface compositions

An experimental arrangement consisting of an ultrahigh vacuum bell jar equipped with an internal sample isolation cell was used to investigate the hydrogenation of CO over Fe and Rh surfaces. This apparatus permitted both UHV surface characterization (Auger electron spectroscopy, low-energy electron diffraction) and high pressure (1-20 atm) catalytic reactions to be carried out. Small surface area (approximately 1 cm/sup 2/) metal samples, both single crystals and polycrystalline foils, were us… more

Date: December 16, 1977

Creator: Dwyer, D.; Yoshida, K. & Somorjai, G.A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Calculated hadronic transmission through iron absorbers

The transmission of hadrons through iron absorbers is investigated for a variety of experimental configurations, and incident particle types (protons, and charged pions) and energies (0.8 GeV/c to 100 GeV). The results obtained are consistent with available experimental data.

Date: March 1, 1978

Creator: Gabriel, T. A. & Bishop, B. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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

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: Report

Partner: UNT Libraries Government Documents Department

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Experimental results of direct containment heating by high-pressure melt ejection into the Surtsey vessel: The DCH-3 and DCH-4 tests

Two experiments, DCH-3 and DCH-4, were performed at the Surtsey test facility to investigate phenomena associated with a high-pressure melt ejection (HPME) reactor accident sequence resulting in direct containment heating (DCH). These experiments were performed using the same experimental apparatus with identical initial conditions, except that the Surtsey test vessel contained air in DCH-3 and argon in DCH-4. Inerting the vessel with argon eliminated chemical reactions between metallic debris … more

Date: August 1, 1991

Creator: Allen, M.D.; Pilch, M.; Brockmann, J.E.; Tarbell, W.W. (Sandia National Labs., Albuquerque, NM (United States)); Nichols, R.T. (Ktech Corp., Albuquerque, NM (United States)) & Sweet, D.W. (AEA Technology, Winfrith (United Kingdom))

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Study of the corrosion rate behavior of ion implanted Fe-based alloys

We report on some studies we have made of the time evolution of the corrosion behavior of ion implanted samples of pure iron, medium carbon steel, and 18-8 Cr-Ni stainless steel. Ti, Cr, Ni, Cu, Mo and Yb were implanted at mean ion energies near 100 keV and at doses up to 1 {times} 10{sup 17} cm{sup {minus}2} using a Mevva metal ion implantation facility. A novel feature of this experiment was the simultaneous implantation with several different implanted species. The implanted samples were imm… more

Date: June 1, 1991

Creator: Weiping, Cai; Wei, Tian; Wu Run (Wuhan Iron and Steel Univ., HB (China)); Godechot, X. & Brown, I. (Lawrence Berkeley Lab., CA (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Relative availability of selected trace elements from coal fly ash and Lake Michigan sediment

The concentration of greater than 1 ..mu..m coal fly ash particles in Lake Michigan surface waters was found to be 10/sup 5/ to 10/sup 6/ per liter. With an expected residence time of one year, this concentration implies a flux to the sediment of 10/sup 6/ to 10/sup 7/ particles/cm/sup 2//yr, or about 10/sup -6/ to 10/sup -5/ g/cm/sup 2//yr. The release of trace elements from fly ash and sediment has been studied using Chelex-100 resin to simulate leaching at high dilutions in natural media. Mn… more

Date: January 1, 1977

Creator: Alberts, J.J.; Burger, J.; Kalhorn, S.; Seils, C. & Tisue, T.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Development of improved iron Fischer-Tropsch catalysts

Date: July 19, 1991

Creator: Bukur, D.B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Research, development, and demonstration for energy conservation: preliminary identification of opportunities in iron and steelmaking

The Federal Government has initiated, expanded, and is accelerating a cost-shaped program with the iron and steel industry to develop innovative, cost-effective programs for new energy-saving technologies. The purpose of this document is to identify opportunities for research and development in the iron and steel industry, giving due consideration to the many barriers that impede the implementation of new technology. These technology sectors also reflect the following three fundamental criteria… more

Date: January 1, 1978

Item Type: Report

Partner: UNT Libraries Government Documents Department