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GRAPHITE-STAINLESS STEEL COMPATIBILITY STUDIES
S>The compatibility of type 304L stainless steel in intimate contact with graphite is being studied as a function of temperature and contact pressure. This study is an outgrowth of materials compatibility problems in present and advanced gas-cooled reactors, where structural members in direct contact with graphite provide the possibility of both carburization and self-welding. Initial studies were concerned with surface reactions in the absence of gaseous contaminants under a vacuum of 10/sup -6/ mm Hg at 540 to 705 deg C. Stainless steel specimens are pretreated to provide three surface conditions: H/sub 2/- fired, preoxidized, and Cu-plated. Surface contact pressures ranged from 0 to 10,000 psi. Test results are presented which establish the lower temperature limit for significant diffusion between graphite and stainless steel at approximately 60O deg C. Above this temperature, diffusion between untreated or H2-fired stainless steel surfaces was found to effect complete bonding of the two materials at contact pressures as low as 500 psi. Bonding was effectively prevented by the presence of either an oxide film or a Cu plate at temperatures up to 700 deg C. Where bonding occurred, diffusion rates measured for C in stainless steel were comparable with those reported for stainless steel …
Date:
September 25, 1962
Creator:
Fleischer, B.; DeVan, J. H. & Coobs, J. H.
Object Type:
Report
System:
The UNT Digital Library
Specifications and Fabrication Procedures for Type 3 Neutron Absorber Sections
The specification contains information concerning the material, process, and product requirements to be met by the fabricator. (J.R.D.)
Date:
April 25, 1962
Creator:
Edgar, E. C. & Clayton, H. R.
Object Type:
Report
System:
The UNT Digital Library
Summary of HRT Run 25
Run 25 was the final period of power operational of the HRT. The reactor was operated for periods of 62, 8, 52, and 80 hours at 5 Mw with no outward indication of fuel and core and blanket average temperatures of 270 and 230 deg C, respectively. The uranium concentration in the was 1.7 to 2.0 g U/kg D/sub 2/O. Longer periods of operation were prevented by mechanical difficulties, notably with the fuel feed pump. While the reactor was subcritical after the last of the above runs, the upper patch in the core tank wall became dislodged, allowing greater core-to-blanket mixing. The resultant blanket uranium concentration was 2.9 g U/kg D/sub 2/O. The reactor was subsequently operated at April 28, 1961. The experiment was operated at high temperature for a total of 10,866 hours. The system was critical for a total of 8,841 hours and produced 16,295 Mwhours of power. The fuel, heavy water, and some corrosion specimens were recovered, and the reactor was stored in an assembled state. (auth)
Date:
July 25, 1962
Creator:
Engel, J. R.; Bauman, H. F.; Buchanan, J. R.; Haubenreich, P. N.; Piper, H. B. & Richardson, D. M.
Object Type:
Report
System:
The UNT Digital Library
Development of a Fluidized Bed Calcination Process for Aluminum Nitrate Wastes in a Two-Foot-Square Plant Calciner. Part 2. Factors Affecting the Intra-Particle Porosity of Alumina
A seven- to twenty-fold volume reduction can be obtained from fluidized bed calcination of aqueous aluminum nitrate wastes, depending on the operating conditions employed and their effect on the intra-panticle porosity and absolute density of the calcined alumina. Among the calcining variables, only the bed temperature and the fuel aluminum concentration had a significant effect on the intra-particle porosity of alumina generated during studies conducted primarily in a two-foot-square fluidized bed calciner. A quantitative correlation of the effect of these variables is presented. Alumina with an intra-particle porosity as low as five per cent can be generated by employing a suitable combination of low bed temperature and dilute aluminum feed concentration. Feed sodium concentration and product alpha alumina content were found to have minor effect on intra-particle porosity. Results also show that an inverse relationship exists between the nitrate content of the calcine and the calcination temperature. (auth)
Date:
July 25, 1962
Creator:
Wheeler, B. R.; Grimmett, E. S. & Buckham, J. A.
Object Type:
Report
System:
The UNT Digital Library
Murgatroyd-an Ibm 7090 Program for the Analysis of the Kinetics of the Msre
An addition is presented for the IBM-7090 program MURGATROYD to produce a rough graph of reactor power versus time. A sample of output is included for the case given as an example. (J.R.D.)
Date:
May 25, 1962
Creator:
Nestor, C. W. Jr.
Object Type:
Report
System:
The UNT Digital Library
A PROGRAM OF BASIC RESEARCH ON MECHANICAL PROPERTIES OF REACTOR MATERIALS. Quarterly Progress Report for the Period Ending June 30, 1962
The effect of modifying the dislocation structure by room-temperature prestraining on the subsequent yielding behavior at 77 deg K is being studied. Results on tantalum single crystals indicated that a considerable decrease in the early yield stress for a given strain is effected by prestraining at room temperature. Twinning was observed in the tantalum at 77 deg K and normal rates of strain. It is shown that the potential barrler to dislocation motion in crystalline solids can be measured in relatively pure bcc transition metals such as Nb, Ta, Mo, and W. Work is being carried out to extend the method of differential calorimetry to measurements of stored-energy-release spectra in deformed bcc metals. Measurements for copper are discussed. (M.C.G.)
Date:
July 25, 1962
Creator:
Trozera, T.A.; Flynn, P.W.; Chambers, R.H. & White, J.L.
Object Type:
Report
System:
The UNT Digital Library
Primary Quantum Conversion in Photosynthesis
None
Date:
August 25, 1962
Creator:
Calvin, Melvin & Androes, G. M.
Object Type:
Article
System:
The UNT Digital Library
The Bellaire Texan (Bellaire, Tex.), Vol. 9, No. 9, Ed. 1 Wednesday, April 25, 1962
Weekly newspaper from Bellaire, Texas that includes local, state, and national news along with advertising.
Date:
April 25, 1962
Creator:
Norton, Mary
Object Type:
Newspaper
System:
The Portal to Texas History
The Dublin Progress (Dublin, Tex.), No. 31, Ed. 1 Thursday, October 25, 1962
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
October 25, 1962
Creator:
Forson, Rance
Object Type:
Newspaper
System:
The Portal to Texas History
The Shamrock Texan (Shamrock, Tex.), Vol. 58, No. 42, Ed. 1 Thursday, January 25, 1962
Weekly newspaper from Shamrock, Texas that includes local, state, and national news along with advertising.
Date:
January 25, 1962
Creator:
Montgomery, Arval
Object Type:
Newspaper
System:
The Portal to Texas History
The Bellaire Texan (Bellaire, Tex.), Vol. 9, No. 22, Ed. 1 Wednesday, July 25, 1962
Weekly newspaper from Bellaire, Texas that includes local, state, and national news along with advertising.
Date:
July 25, 1962
Creator:
Norton, Mary
Object Type:
Newspaper
System:
The Portal to Texas History
Honey Grove Signal-Citizen (Honey Grove, Tex.), Vol. 72, No. 20, Ed. 1 Friday, May 25, 1962
Weekly newspaper from Honey Grove, Texas that includes local, state, and national news along with advertising.
Date:
May 25, 1962
Creator:
Morrow, Joe T.
Object Type:
Newspaper
System:
The Portal to Texas History
The Winkler County News (Kermit, Tex.), Vol. 26, No. 76, Ed. 1 Thursday, January 25, 1962
Semi-weekly newspaper from Kermit, Texas that includes local, state, and national news along with advertising.
Date:
January 25, 1962
Creator:
Williams, Nev H.
Object Type:
Newspaper
System:
The Portal to Texas History
The Brady Herald (Brady, Tex.), Vol. 20, No. 6, Ed. 1 Tuesday, December 25, 1962
Weekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
December 25, 1962
Creator:
Wilson, Bob
Object Type:
Newspaper
System:
The Portal to Texas History
The Brady Herald (Brady, Tex.), Vol. 19, No. 45, Ed. 1 Tuesday, September 25, 1962
Weekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
September 25, 1962
Creator:
Wilson, Bob
Object Type:
Newspaper
System:
The Portal to Texas History
The Brady Standard and Heart O' Texas News (Brady, Tex.), Vol. 53, No. 32, Ed. 1 Friday, May 25, 1962
Weekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
May 25, 1962
Creator:
Smith, L. B.
Object Type:
Newspaper
System:
The Portal to Texas History
The Comanche Chief (Comanche, Tex.), Vol. 88, No. 48, Ed. 1 Friday, May 25, 1962
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
May 25, 1962
Creator:
Wilkerson, J. C.
Object Type:
Newspaper
System:
The Portal to Texas History
The Clarksville Times (Clarksville, Tex.), Vol. 90, No. 19, Ed. 1 Friday, May 25, 1962
Weekly newspaper from Clarksville, Texas that includes local, state, and national news along with advertising.
Date:
May 25, 1962
Creator:
Pinson, Joe
Object Type:
Newspaper
System:
The Portal to Texas History
A Needle in a Haystack
Abstract: "Production of [rho]'s and [omega]'s in [pi]- + p and p + [letter p with a bar over it] interactions is discussed. The [rho] is presumably a J = 1-, 1 = 1 state and thus can decay into 2[pi]'s via a strong coupling. The [omega] is probably J = 1-, 1 = 0 which can also decay into 2[pi]'s via electromagnetic coupling. A theoretical description of this situation is presented in terms of coupled time-dependent Schroedinger equations which mix [rho] and [omega] states that are assumed to be isotopically pure at the time of production. The interference between the two resonances was found to have the effect of extending the 2[pi] spectrum toward the [omega] mass."
Date:
May 25, 1962
Creator:
Bernstein, J. & Feinberg, Gerald, 1933-1992
Object Type:
Report
System:
The UNT Digital Library
Geology of core hole WP-4 Tatum dome, Lamar County, Mississippi. Technical letter: Dribble-19
None
Date:
April 25, 1962
Creator:
Eargle, D.H.
Object Type:
Report
System:
The UNT Digital Library
The Cherokeean. (Rusk, Tex.), Vol. 114, No. 32, Ed. 1 Thursday, January 25, 1962
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
January 25, 1962
Creator:
Whitehead, E. H.
Object Type:
Newspaper
System:
The Portal to Texas History
The Cherokeean. (Rusk, Tex.), Vol. 115, No. 19, Ed. 1 Thursday, October 25, 1962
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
October 25, 1962
Creator:
Whitehead, E. H.
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 73, No. 4, Ed. 1 Thursday, January 25, 1962
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
January 25, 1962
Creator:
Ezzell, Ben
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 73, No. 43, Ed. 1 Thursday, October 25, 1962
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
October 25, 1962
Creator:
Ezzell, Ben
Object Type:
Newspaper
System:
The Portal to Texas History