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View article: Synthesis of inter‐lanthanide sesquioxides LnLn'O <sub>3</sub> by polymeric steric entrapment
Synthesis of inter‐lanthanide sesquioxides LnLn'O <sub>3</sub> by polymeric steric entrapment Open
Lanthanide oxides are well known in the fields of optical, electronic, and magnetic materials. Even so, there are many application spaces yet to be explored. Previous modeling of inter‐lanthanide sesquioxides, in which the compound contain…
View article: Development of Refractory Alloys and Refractory Coatings for Advanced Nuclear Reactors
Development of Refractory Alloys and Refractory Coatings for Advanced Nuclear Reactors Open
The next generation of nuclear reactors will benefit from materials that enable operation at higher temperatures (>500°C), higher irradiation doses (up to 200 displacements per atom (dpa)), and the use of more corrosive and reactive coolan…
View article: Surface Tagging of Al 6061-T6 using Photoluminescent Oxides
Surface Tagging of Al 6061-T6 using Photoluminescent Oxides Open
The goal of tagging nuclear fuels (or related materials, such as fuel cladding) is to provide a persistent marker, traceable to the fuel manufacturer, that can be detected after some length of time, likely after the fuel has been lost, rer…
View article: Transformative Manufacturing of Adaptive Wire Feedstocks with Atomic Layer Deposition of Nb<sub>2</sub>O<sub>5</sub> onto Depleted Uranium [Slides]
Transformative Manufacturing of Adaptive Wire Feedstocks with Atomic Layer Deposition of Nb<sub>2</sub>O<sub>5</sub> onto Depleted Uranium [Slides] Open
Project Motivation: Uranium corrosion susceptible and highly catalytic; Exposure thickens oxide impacting material performance. This worsens with time; Sigma is uniquely positioned to tackle R&D; challenges with Uranium processing. Possibl…
View article: Surface Tagging with Photoluminescent Particles (Summary Report for FY22)
Surface Tagging with Photoluminescent Particles (Summary Report for FY22) Open
This report describes the results of initial welding trials for the purpose of implanting photoluminescent taggants in the form of metal-based oxides on the surface of a base material for future detection. The goal of this work was to expl…
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: Photoluminescence in Tagging: A Glowing Review
Photoluminescence in Tagging: A Glowing Review Open
This literature review explores the options of using photoluminescence for tagging uranium fuel and zirconium cladding in order to easily and quickly associate interdicted material to its facility of origin or pathway after loss of institu…
View article: 17-7PH Housing Weld Report FY21
17-7PH Housing Weld Report FY21 Open
This report presents the work performed for welding 17-7PH stainless steel hemispheres, flanges, and accelerometer blocks. This includes weld development, microhardness measurements, calculated strengths, and distortion measurements after …
View article: Microwave Cast Material Examination
Microwave Cast Material Examination Open
Microwave-cast material dating from the latest prototype development period and subsequent TRL 7 advancement testing was sent to LANL for additional characterization. The initial characterization described here is considered a supplement t…