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29
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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
[Photograph 2012.201.B0241.0545]
Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Mrs. Linda Hubler and Mrs. John Wilson Cory"
Date:
July 25, 1962
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0236.0478]
Photograph taken for a story in the Daily Oklahoman newspaper.
Date:
February 25, 1962
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0366.0095]
Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Mrs. Robert Evans"
Date:
August 25, 1962
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0235.0318]
Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Latest of the 15 distinguished jurors brought to Oklahoma City to decide the Bloch Young Artist Award are tenor Eugene Conley, Denton, Texas; Mrs. Hazel Post Gillette, Fort Worth; Hans Schwieger, Kansas City."
Date:
July 25, 1962
Creator:
Matheson, Mandell
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0410.0050]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "This is the moon as technicians see it."
Date:
September 25, 1962
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0252.0009]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Club work and the telephone work that goes with it keeps Miss Clara Currier so busy since she left John Adams school that she has no time for such activities as playing her electronic organ."
Date:
October 25, 1962
Creator:
King, Cliff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0236.0467]
Photograph taken for a newspaper owned by the Oklahoma Publishing Company.
Date:
October 25, 1962
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0307.0155]
Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Terry Dill, one of the early leaders gets off a tee shot Saturday."
Date:
August 25, 1962
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0410.0049]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Howard Anderson and a Pinkerton guard stand near moon base in early morning before crowds arrive."
Date:
September 25, 1962
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0092.0660]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "A spokesman for the Oklahoma Press Association has criticized the recommendations of university of Oklahoma president Dr. J. Herbert Holloman relating to the study of journalism.."
Date:
January 25, 1962
Creator:
Lucas, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph of Linda Woods]
Photograph of Linda Woods, a music major at North Texas State University. She holds up four mallets and poses by an instrument.
Date:
April 25, 1962
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Photograph of Linda Woods]
Photograph of Linda Woods, a music major at North Texas State University. She poses behind a musical instrument.
Date:
April 25, 1962
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Photograph 2012.201.B0138.0504]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "JUNIOR LEAGUE ACTIVITIES across the nation and Canada were the conversational topic when the board and executive committee of the Oklahoma City league entertained transfer members at a coffee in the home of Mrs. Boston W. Smith."
Date:
January 25, 1962
Creator:
Miller, Louie
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0507]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "RECEIVING HOSTESSES at the Junior League bundle coffee and style show Wednesday had double duty -- they welcomed guests and accepted the bundles of clothing each brought as admission to the party."
Date:
April 25, 1962
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City Downtown Community Center
Photograph of a model with a roof for the Oklahoma City Downtown Community Center. Photo by Johnny Melton, Oklahoma City, OK, June 25, 1962.
Date:
June 25, 1962
Creator:
Melton, Johnny
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City Downtown Community Center
Photograph of the site pLan for Oklahoma City Downtown Community Center. Photo by Johnny Melton, Oklahoma City, OK, June 25, 1962.
Date:
June 25, 1962
Creator:
Melton, Johnny
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City Downtown Community Center
Photograph of the site pLan for Oklahoma City Downtown Community Center. Photo by Johnny Melton, Oklahoma City, OK, June 25, 1962.
Date:
June 25, 1962
Creator:
Melton, Johnny
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City Downtown Community Center
Photograph of a model with a roof for the Oklahoma City Downtown Community Center. Photo by Johnny Melton, Oklahoma City, OK, June 25, 1962.
Date:
June 25, 1962
Creator:
Melton, Johnny
Object Type:
Photograph
System:
The Gateway to Oklahoma History