Eric Tegtmeier
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View article: Investigation of Carbide Inclusions in Cast Uranium [Slides]
Investigation of Carbide Inclusions in Cast Uranium [Slides] Open
Outline - Introduction: The motivations for the project, and some background on inclusions in uranium, and about the samples; Lath Inclusion Morphology: Looking at the morphology of a specific family of carbide inclusions in casting 20; Cl…
View article: U-rich U-Mo Solidus, Liquidus, Enthalpy, and Thermal Diffusivity
U-rich U-Mo Solidus, Liquidus, Enthalpy, and Thermal Diffusivity Open
Several material properties have been studied as a function of composition as part of the USHPRR effort to use U-10Mo for LEU monolithic fuel foils, with special attention to areas where simulation outcomes can be improved. The liquidus an…
View article: Progress Towards a Titanium-Zirconium-Molybdenum Alloy Coreblock Prototype Using Powder Bed Fusion
Progress Towards a Titanium-Zirconium-Molybdenum Alloy Coreblock Prototype Using Powder Bed Fusion Open
Microreactor designs make use of a coreblock for structural stability allowing for these devices to provide powder generation while being portable and inherently safe. In order to maximize energy output of the microreactors, materials must…
View article: Predicting electrical conductivity in Cu/Nb composites: A combined model-experiment study
Predicting electrical conductivity in Cu/Nb composites: A combined model-experiment study Open
The generation of high magnetic fields requires materials with high electric conductivity and good strength properties. Cu/Nb composites are considered to be good candidates for this purpose. In this work, we aim to predict, from theory, t…
View article: Predicting electrical conductivity in Cu/Nb composites: a combined model-experiment study
Predicting electrical conductivity in Cu/Nb composites: a combined model-experiment study Open
The generation of high magnetic fields requires materials with high electric conductivity and good strength properties. Cu/Nb composites are considered to be good candidates for this purpose. In this work we aim to predict, from theory, th…
View article: Intentional Uranium Tagging for Material Provenance and Pathway Forensics (LA19-Intentional-Forensics-NDD3Bb): Final Project Report
Intentional Uranium Tagging for Material Provenance and Pathway Forensics (LA19-Intentional-Forensics-NDD3Bb): Final Project Report Open
This report summarizes the outcomes of a 3-year NA-22 exploratory project to research the feasibility of tagging uranium materials, especially nuclear fuels, for nuclear nonproliferation purposes. The experimental focus was on metallic ura…
View article: Intentional Uranium Tagging for Material Provenance and Pathway Forensics (LA19-Intentional-Forensics-NDD3Bb) (Annual Report for FY21)
Intentional Uranium Tagging for Material Provenance and Pathway Forensics (LA19-Intentional-Forensics-NDD3Bb) (Annual Report for FY21) Open
This report describes the outcomes of the third and final year of a project to research the feasibility of tagging uranium materials, especially nuclear fuels. The experimental focus remained on metallic uranium forms under prospective sur…
View article: TUM DU Foil Characterization and Inspection Update [Slides]
TUM DU Foil Characterization and Inspection Update [Slides] Open
laboratory-measured isotope ratios as a benchmark. The flux distribution in the foils was determined. Finally, using the continuous energy Tsunami-3d module of SCALE, a sensitivity/uncertainty analysis was performed to determine the effect…
View article: Characterization Report for the MP-1 Experiment Fabrication Campaign (Rev.1)
Characterization Report for the MP-1 Experiment Fabrication Campaign (Rev.1) Open
This report covers the results of MP 1 fuel characterization analysis to provide a detailed understanding of the as-fabricated fuel that would be irradiated in the MP 1 (Mini-Plate 1) experiment. The work was performed at Pacific Northwest…
View article: Characterization of foils rolled for TUM: One
Characterization of foils rolled for TUM: One Open
laboratory-measured isotope ratios as a benchmark. The flux distribution in the foils was determined. Finally, using the continuous energy Tsunami-3d module of SCALE, a sensitivity/uncertainty analysis was performed to determine the effect…
View article: Focused Ion Beam analysis of non radioactive samples [PowerPoint]
Focused Ion Beam analysis of non radioactive samples [PowerPoint] Open
The presentation includes various images to illustrate the analysis. Helios G4 Plasma FIB: Xe ion columns mills material 30 times faster than Ga; Options include: Energy Dispersive Spectroscopy (EDS), Wavelength Dispersive spectroscopy (WD…
View article: Single Crystal UO<sub>2</sub> cube creation using a Xe Plasma FIB [PowerPoint]
Single Crystal UO<sub>2</sub> cube creation using a Xe Plasma FIB [PowerPoint] Open
The presentation describes the process involved in making Uranium Oxide cubes that being sent to Germany for a beam line experiment.
View article: Aging & Lifetimes - Microscopy of Uranium Hydride in FY2020 [Slides]
Aging & Lifetimes - Microscopy of Uranium Hydride in FY2020 [Slides] Open
more comprehensive body of U-Nb literature data was mined, in addition to being augmented by the latest LANL and UK AWE data. The tensile data compilation was published separately (LANL report LA-14493, December 2016). Recognizing the chem…
View article: Characterization Report for the MP-1 Experiment Fabrication Campaign
Characterization Report for the MP-1 Experiment Fabrication Campaign Open
This report covers the results of MP 1 fuel characterization analysis to provide a detailed understanding of the as-fabricated fuel that would be irradiated in the MP 1 (Mini-Plate 1) experiment. The work was performed at Pacific Northwest…
View article: Tape casting and characterizations of MgO ceramics
Tape casting and characterizations of MgO ceramics Open
We report a high density MgO ceramic substrate produced by the tape casting technology. The tape casting formulation and process produced a uniform tape free of cracking. Y 2 O 3 and SiO 2 were used as the sintering aid for the pressureles…
View article: Pyrolytic Carbon Coating Effects on Oxide and Carbide Kernels Intended for Nuclear Fuel Applications
Pyrolytic Carbon Coating Effects on Oxide and Carbide Kernels Intended for Nuclear Fuel Applications Open
The coating of nuclear fuel kernels with pyrolytic carbon (PyC) is a well-understood practice dating back over half a century. In spite of decades of studies related to these coatings, no study has yet investigated the effect of the PyC de…
View article: A Test of ASTM Methods E1245-03 and E562-11 in Calculating the Volume Fraction of Carbides in a U-10Mo Foil
A Test of ASTM Methods E1245-03 and E562-11 in Calculating the Volume Fraction of Carbides in a U-10Mo Foil Open
Volume fraction measurements of carbides in DU-10Mo castings and foils were performed as part of a round robin study aimed at ensuring characterization efforts by multiple laboratories were yielding consistent results. Three of the four la…
View article: Pyrolytic Carbon Coating Effects on Oxide and Carbide Kernels Intended for Nuclear Fuel Applications
Pyrolytic Carbon Coating Effects on Oxide and Carbide Kernels Intended for Nuclear Fuel Applications Open
The coating of nuclear fuel kernels with pyrolytic carbon (PyC) is a well-understood practice dating back over half a century. In spite of decades of studies related to these coatings, no study has yet investigated the effect of the PyC de…
View article: FY18 Report: HFIR Fuel Casting Support and Microstructural Feature Examination
FY18 Report: HFIR Fuel Casting Support and Microstructural Feature Examination Open
An effort to commence conversion of the High Flux Isotope Reactor (HFIR) to a low enriched uranium (LEU) based fuel has been proposed. While recent experience from LEU-10wt%Mo (U-10Mo) monolithic metal fuel production may be leveraged cons…
View article: Metallurgical Failure Analysis of A2 Tool Steel Die Set from High Explosive Pellet Pressing Event
Metallurgical Failure Analysis of A2 Tool Steel Die Set from High Explosive Pellet Pressing Event Open
On 2 April 2018, a high explosive violent reaction (HEVR) occurred during routine pressing of a 1-in -diameter cylindrical pellet of PBX 9501 high explosive. Fragments of the die set (die body and stemples) involved in the event were sent …
View article: Texture Evolution in U-10Mo Nuclear Fuel Foils during Plasma Spray Coating with Zr
Texture Evolution in U-10Mo Nuclear Fuel Foils during Plasma Spray Coating with Zr Open
A uranium-molybdenum alloy clad in 6061 aluminum has the potential to lead to a wide application of low-enriched uranium fuels, replacing highly enriched uranium for research reactors. A Zr coating acts as a diffusion barrier between the f…
View article: Processing and characteristics of transparent Gd <sub>3</sub> TaO <sub>7</sub> polycrystalline ceramics
Processing and characteristics of transparent Gd <sub>3</sub> TaO <sub>7</sub> polycrystalline ceramics Open
Transparent polycrystalline Gd 3 TaO 7 ceramics were successfully developed. A sol‐gel process was used to synthesize Gd 3 TaO 7 powder with a uniform composition and an estimated average particle size of 100 nm. Simultaneous thermal gravi…
View article: Corrosion Testing of 304L SS 3013 Inner Container and Teardrop Samples
Corrosion Testing of 304L SS 3013 Inner Container and Teardrop Samples Open
The Department of Energy (DOE) 3013 Standard specifies a minimum of two containers to be used for the storage of plutonium-bearing materials containing at least 30 wt.% plutonium and uranium. Three nested containers are typically used, the…