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Author : C. W. Loveland
Publisher : Unknown
Page : 54 pages
File Size : 47,8 Mb
Release : 1960
Category : Molybdenum alloys
ISBN : UOM:39015094984906
Author : Anonim
Publisher : Unknown
Page : 288 pages
File Size : 44,8 Mb
Release : 1965
Category : Nuclear reactors
ISBN : UOM:39015095087345
Author : U.S. Atomic Energy Commission
Publisher : Unknown
Page : 498 pages
File Size : 49,8 Mb
Release : 1960
Category : Subject headings
ISBN : UOM:39015030343365
Author : Anonim
Publisher : Unknown
Page : 316 pages
File Size : 54,8 Mb
Release : 1964
Category : Nuclear reactors
ISBN : UOM:39015095087337
Author : Anonim
Publisher : Unknown
Page : 1256 pages
File Size : 41,9 Mb
Release : 1973
Category : Nuclear energy
ISBN : UOM:39015026176100
Author : D. E. Thomas,Benjamin Lustman
Publisher : Unknown
Page : 38 pages
File Size : 47,7 Mb
Release : 1954
Category : Uranium alloys
ISBN : UOM:39015095162825
Author : M. P. Johnson,W. A. Holland
Publisher : Unknown
Page : 38 pages
File Size : 44,6 Mb
Release : 1964
Category : Molybdenum alloys
ISBN : UOM:39015095005164
A series of experiments was designed to assess the suitability of uranium-molybdenum alloys as high-temperature, high-burnup fuels for advanced sodium cooled reactors. Specimens with molybdenum contents between 3 and 10% were subjected to capsule irradiation tests in the Materials Testing Reactor, to burnups up to 10,000 Mwd/MTU at temperatures between 800 and 1500 deg F. The results indicated that molybdenum has a considerable effect in reducing the swelling due to irradiation. For example. 3% molybdemum reduces the swelling from 25%, for pure uranium. to 7% at approximates 3,000 Mwd/MTU at 1270 deg F. Further swelling resistance can be gained by increasing the molybdenum content, but the amount gained becomes successively smaller. At higher irradiation levels, the amount of swelling rapidly becomes greater, and larger amounts of molybdenum are required to provide similar resistance. A limit of 7% swelling, at 900 deg F and an irradiation of 7,230 Mwd/ MTU, requires the use of 10% Nonemolybdenum in the alloy. The burnup rates were in the range of 2.0 to 4.0 x 10p13s fissiom/cc-sec. Small ternary additions of silicon and aluminum were shown to have a noticeable effect in reducing swelling when added to a U-3% Mo alloy base. Under the conditions of the present experiment, 0.26% silicon or 0.38% aluminum were equivalent to 1 to 1 1/2% molybdenum. The Advanced Sodium Cooled Reactor requires a fuel capable of being irradiated to 20,000 Mwd/MTU at temperatures up to 1500 deg C in metal fuel, or equivalent in ceramic fuel. It is concluded that even the highest molybdenum contents considered did not produce a fuel capable of operating satisfactorily under these conditions. The alloys would be useful, however, for less exacting conditions. The U-3% Mo alloy is capable of use up to 3,000 Mwd/MTU at temperatures of 1300 deg F before swelling becomes excessive. The addition of silicon and aluminum would increase this limit to at least 3,000 Mwd/MTU, and possibly more if the
Author : Anonim
Publisher : Unknown
Page : 376 pages
File Size : 46,6 Mb
Release : 1958
Category : Energy development
ISBN : CORNELL:31924105638484
Author : Anonim
Publisher : Unknown
Page : 726 pages
File Size : 40,7 Mb
Release : 1963
Category : Nuclear engineering
ISBN : UOM:39015019466922
Author : Clara Gale Goldbeck,Zaida Martinez,Theresa DeGroot
Publisher : Unknown
Page : 16 pages
File Size : 55,8 Mb
Release : 1950
Category : Uranium alloys
ISBN : UOM:39015095317015
Author : Anonim
Publisher : Unknown
Page : 1332 pages
File Size : 41,9 Mb
Release : 1964
Category : Nuclear energy
ISBN : RUTGERS:39030044057414
Author : E. F. Losco
Publisher : Unknown
Page : 116 pages
File Size : 55,6 Mb
Release : 1955
Category : Uranium alloys
ISBN : UOM:39015095219351
Author : Bureau of National Affairs (Arlington, Va.)
Publisher : Unknown
Page : 880 pages
File Size : 40,8 Mb
Release : 1958
Category : Nuclear energy
ISBN : UOM:39015001339723
Author : Anonim
Publisher : Unknown
Page : 384 pages
File Size : 48,9 Mb
Release : 1962
Category : Subject headings
ISBN : UOM:39015095051283
Author : Melvin L. Bleiberg
Publisher : Unknown
Page : 122 pages
File Size : 51,5 Mb
Release : 1957
Category : Uranium alloys
ISBN : UOM:39015095064666
The effects of pile irradiations on the physical properties and corrosion resistance of U-- Mo, U-- Nb; and U--Si alloys are reported. The dimensional stability under irradiation of the gamma phase U-- Mo and U-- Nb alloys is excellent; however, an isotropic volume increase of 4 to 6% per wt.% burnup may limit the ultimate fuel element life. Corrosion resistance of the gamma-phase alloys appesrs to be improved when subjected to s neutron field; this is attributed to an irrsdiation induced stabilization of the gamma phases. The U/ sub 3/Si alloy, on the other hand, suffered severe deterioration, particularly of corrosion resistance. Changes in electrical resistivity, hardness, mechanical properties, and crystal structure are presented and the mechanisms producing the observed changes discussed.