Surface Characterization of Depleted Uranium–Molybdenum to Determine Surface Coating Compatibility
- Univ. of Utah, Salt Lake City, UT (United States)
- Chosun Univ., Gwangju (Korea)
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
Scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy have been used to characterize the surface of depleted uranium molybdenum (DU-Mo) alloys as a chemical surrogate to determine potential challenges with the surfaces of manufactured and stored U-Mo foils and powders. Even when stored and shipped in an inert atmosphere, U-Mo has a tenacious surface contamination of oxygen and carbon. The 8 at. % molybdenum (DU-8Mo) powder and 10 at. % molybdenum (DU-10Mo) foil samples have surface contamination of oxygen and carbon in different ratios that is hundreds to thousands of nanometers thick. The DU-8Mo powder sample has been stored in an inert atmosphere and as a result has a lower carbon-to-oxygen ratio at the surface than the DU-10Mo foil sample that was stored in air. This surface contamination has not been removed by up to 20 min of argon ion sputtering nor with 5% hydrogen in argon heat treatment for up to 96 h at 950°C.
- Research Organization:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE); USDOE
- Grant/Contract Number:
- AC07-05ID14517; 25228
- OSTI ID:
- 1490496
- Alternate ID(s):
- OSTI ID: 1561106
- Report Number(s):
- INL/JOU-16-40037-Rev000; TRN: US2000600
- Journal Information:
- Nuclear Technology, Vol. 205, Issue 6; ISSN 0029-5450
- Publisher:
- Taylor & Francis - formerly American Nuclear Society (ANS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Uranium Molybdenum Alloy
Surface Characterization
XPS
FIB/TEM
SEM
Crystal Structure
Lattice Spacing
Chemical Surface Processing