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Real time, in-situ deuteriding of uranium encapsulated in grout; effects of temperature on the uranium-deuterium reaction

DOI: 10.1016/j.corsci.2017.08.016 DOI Help

Authors: C. A. Stitt (University of Bristol) , C. Paraskevoulakos (University of Bristol) , N. J. Harker (European Synchrotron Radiation Facility) , A. Banos (University of Bristol) , K. R. Hallam (University of Bristol) , C. P. Jones (University of Bristol) , T. B. Scott (University of Bristol)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Corrosion Science

State: Published (Approved)
Published: August 2017
Diamond Proposal Number(s): 10569

Abstract: To accurately predict the initiation and evolution of uranium hydride potentially present in nuclear waste containers, studies of simulated conditions are required. Here, for the first time, the uranium-deuterium reaction was examined in-situ, in real time, whilst within grouted media. A deuterium gas control rig and stainless steel-quartz glass reaction cell were configured on a synchrotron beam line to collect X-ray diffraction and X-ray tomography data. It was found that deuteride formation was limited by the uranium and grout thermal conductivities and deuteride initiation only commenced above a threshold temperature. Strong adherence between uranium oxide and grout was also observed.

Journal Keywords: Uranium hydride; In-situ; Grout; Synchrotron; X-ray tomography; X-ray powder diffraction

Subject Areas: Physics, Chemistry, Environment

Instruments: I12-JEEP: Joint Engineering, Environmental and Processing