Author: Masayuki KawasakiPublisher:
ISBN:
Category : Molybdenum alloys
Languages : en
Pages : 32
Book Description
Studies on Uranium-molybdenum Alloy
Author: Masayuki KawasakiPublisher:
ISBN:
Category : Molybdenum alloys
Languages : en
Pages : 32
Book Description
The Mechanical Properties of Uranium - Molybdenum Alloys
Author: M. B. WaldronPublisher:
ISBN:
Category : Molybdenum
Languages : en
Pages : 34
Book Description
Some Properties of Uranium-molybdenum Alloy Fuels for Organic Moderated Reactors
Author: W. H. FriskePublisher:
ISBN:
Category : Molybdenum alloys
Languages : en
Pages : 30
Book Description
The Determination of Molybdenum in Uranium-molybdenum Alloys by Monochromatic X-ray Absorption
Author: William C. DietrichPublisher:
ISBN:
Category : Molybdenum
Languages : en
Pages : 32
Book Description
Transformation of Metastable Phases in the Uranium-molybdenum Alloy System
Author: R.F. HillsThe Gravimetric Determination of Molybdenum in Uranium-molybdenum Alloys with [alpha]-benzoinoxime
![The Gravimetric Determination of Molybdenum in Uranium-molybdenum Alloys with [alpha]-benzoinoxime PDF](https://books.google.com/books/content/images/frontcover/1SwPGrApscIC?fife=w80-h100)
Author: Ross D. GardnerPublisher:
ISBN:
Category : Benzoin
Languages : en
Pages : 24
Book Description
Thermal Properties of Uranium-Molybdenum Alloys
Author: John Thomas CreasyPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Uranium-Molybdenum (U-Mo) alloys are of interest to the nuclear engineering community for their potential use as reactor fuel. The addition of molybdenum serves to stabilize the gamma phase of uranium, as well as increasing the melting point of the fuel. Thermal properties of U-Mo alloys have not been fully characterized, especially within the area of partial phase decomposition of the gamma phase of the alloy. Additional data was acquired through this research to expand the characterization data set for U-Mo alloys. The U-Mo alloys used for this research were acquired from the Idaho National Laboratory and consisted of three alloys of nominal 7, 10, and 13 percent molybdenum by weight. The sample pins were formed by vacuum induction melt casting. Once the three sample pins were fabricated and sent to the Fuel Cycle and Materials Laboratory at Texas A & M University, the pins were homogenized and sectioned for heat treatment. Several heat treatments were performed on the samples to induce varying degrees of phase decomposition, and the samples were subsequently sectioned for phase verification and thermal analysis. An Electron Probe Microanalyzer with wavelength dispersive spectroscopy was used to observe the phases in the samples as well as to characterize each phase. The density of each sample was determined using Archimedes method. Finally, a light flash analyzer was used to determine thermal diffusivity of the samples up to 300 degrees C as well as to estimate the thermal conductivity. For U-10Mo, thermal diffusivity increased with increasing phase decomposition from gamma to alpha +U2Mo while U-7Mo saw a flattening of the thermal diffusivity curve with increased phase decomposition.
The Constitution Diagram of Molybdenum-rich Uranium-molybdenum Alloys
Author: Henry A. SallerPublisher:
ISBN:
Category : Molybdenum alloys
Languages : en
Pages : 16
Book Description
Irradiation of U-Mo Base Alloys
Author: M. P. JohnsonPublisher:
ISBN:
Category : Molybdenum alloys
Languages : en
Pages : 38
Book Description
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
Production of Molybdenum-uranium and Zirconium-uranium Alloys
Author: C. W. LovelandPublisher:
ISBN:
Category : Molybdenum alloys
Languages : en
Pages : 54
Book Description