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HYDROGEN AND OXYGEN ISOTOPES APPLIED TO THE STUDY OF WATER-METAL REACTIONS. EXCHANGE OF D$sub 2$O$sup 18$ WITH ALPHA ALUMINA MONOHYDRATE

Description: Isotopes of hydrogen and oxygen may be useful in elucidating the mechanism of aqueous corrosion reactions, in which an important step may be diffusion of protons and/or hydroxyl for oxide) ions through a thin protective film. The technique of isotope exchange and the kinetic isotope effect both appear applicable. For the reaction between water and aluminum, the product (above 90 deg C) is alpha -alumina monohydrate ( alpha -AlCDH). The exchange of D/sub 2/O/sup 18/ with alpha -AlOOH (sub-micron… more
Date: August 1, 1958
Creator: Bernstein, R.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Corrosion Resistance and Mechanical Properties of Aluminum Powder Products

Description: Experimental extrusions were prepared from mixtures of atomized aluminum alloy and several powdered additives, including SiO/sub 2/, AlPO/sub 4/, and Al/ sub 2/O/sub 3/. Some of the extrusions failed during corrosion testing in water at 290 and 350 C. Others corroded in approximately the same fashion as wrought X8001 alloy. The ultimate tensile strengths of these extrusions at 316 C were approximately two and one-half times greater than that of wrought X8001 alloy. (auth)
Date: March 1, 1959
Creator: Draley, J. E. & Ruther, W. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SINTERED ALUMINA AS A PUMP BEARING AND JOURNAL MATERIAL

Description: Design criteria and operating experience with the aluminum oxide bearing and journal combination as installed in canned rotor pumps in in-pile loops are described. No pump failures occurred in 8 pumps with A1/sub 2/0/sub 3/ bearings over a cumulative period of l0,000 hours due to wear or corrosion. Five failures due to slippage and/or electrical breakdown of the stator insulation are reported. (T.R.H.)
Date: November 26, 1957
Creator: Savage, H.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Corrosion of Materials in the Presence of Fluorine at Elevated Temperatures

Description: A study of the corrosion of various metallic and ceramic materials by gaseous fluorine at elevated temperatures (400-750°C) has been made. This work was initiated to aid in the selection of matierals of construction for the Fluoride Volatility Process applied to irradiated plutonium-uranium alloys. The data obtained in this investigation indiciated nickel and Monel were suitable materials for use in a fluorine atmosphere at temperatures up to 550°C.
Date: January 1, 1957
Creator: Steindler, M.J. & Vogel, R.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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THE EFFECT OF RADIATION AND NITRIC ACID-NITRATE SALT SOLUTION ON SOME NON- METALLIC MATERIALS

Description: Several plastic materials and one ceramic alumina were tested for possible use as electrical insulators and spacers in an electrolytic dissolver for processing irradiated nuclear fuels. They were first screened for chemical resistance to the boiling dissolver product solution composed of 1 M nitric acid and 75 g/l stainless steel metal components as nitrates. Those that were resistant were then exposed simultaneously to the boiling dissolver product solution and a gamma irradiation field. Value… more
Date: December 10, 1962
Creator: Decker, L A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SHAPED BURNABLE POISON DEVELOPMENT PROGRAM UNDER THE EURATOM PROGRAM. Quarterly Progress Report, December 1, 1962-February 28, 1963

Description: Nuclear cross section data for gadolinium, Gd/sup 155/, and Gd/sup 157/ were compiled. Average absorption cross sections were computed assuming Maxwellian thermal spectra for moderator temperatures from 70 to 600 deg F. Poison demand curves were computed for a boiling water reactor with an H/sub 2/O- to-UO/sub 2/ ratio of 2.6, U/sup 235/ enrichments from 1.8 to 3.8 wt%, zirconium or stainless steel as clad, and fuel depletions of 10,000 to 25,000 Mwd/t. Based on the above poison demand curves, … more
Date: April 10, 1963
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ceramic Materials for Nuclear Thermionic Converters

Description: The developement and fabrication of ceramic-to-metal seals for thermionic converters which will operate in the temperature range of 700 to 1200 deg C are reported. Two ceramic-to-metal seal combinations were developed which show promise for specialized applications. For operation in an oxidizing atmosphere near 700 deg C, magnesia and nickel appear to be a good combination. Seals operating near 1200 deg C, if an oxidizing atmosphere is not present, may be composed of niobium and alumina with pa… more
Date: January 1, 1963
Creator: Cowan, R. E. & Stoddard, S. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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