TY - GEN
T1 - Compatibility studies of stainless steel and Pu-Zr alloys doped with Am and Np
AU - Keiser, Dennis D.
AU - Kennedy, J. Rory
PY - 2003
Y1 - 2003
N2 - As part of the Advanced Fuel Cycle Initiative (AFCI), the compatibility of stainless steel and Pu-Zr-based alloys with additions of Am and Np has been tested by studying solid-solid diffusion couples from stainless steel and as-cast fuel alloys. These couples were annealed at the maximum cladding temperature present for a fuel element in-reactor and rapidly cooled to room temperature. Analysis was performed using a scanning electron microscope equipped with energy-dispersive and wavelength-dispersive spectrometers (SEM/EDS/WDS) to evaluate any developed diffusion structures. At 650°C, the highest fuel-cladding interface temperature, Pu, Zr, Np, and Am were observed to penetrate into the stainless steel. Fe, Cr, and Ni penetrated into the fuel alloys. Globular, Fe-rich phases were observed that contained up to around 20 at% Zr, some actinides and minor amounts of other stainless steel constituents. A fuel phase was observed with a small amount of Fe. Based on composition, an Fe 2Zr type of phase may be present in the interdiffusion zone. Based on available phase diagrams, none of the formed phases should be low-melting.
AB - As part of the Advanced Fuel Cycle Initiative (AFCI), the compatibility of stainless steel and Pu-Zr-based alloys with additions of Am and Np has been tested by studying solid-solid diffusion couples from stainless steel and as-cast fuel alloys. These couples were annealed at the maximum cladding temperature present for a fuel element in-reactor and rapidly cooled to room temperature. Analysis was performed using a scanning electron microscope equipped with energy-dispersive and wavelength-dispersive spectrometers (SEM/EDS/WDS) to evaluate any developed diffusion structures. At 650°C, the highest fuel-cladding interface temperature, Pu, Zr, Np, and Am were observed to penetrate into the stainless steel. Fe, Cr, and Ni penetrated into the fuel alloys. Globular, Fe-rich phases were observed that contained up to around 20 at% Zr, some actinides and minor amounts of other stainless steel constituents. A fuel phase was observed with a small amount of Fe. Based on composition, an Fe 2Zr type of phase may be present in the interdiffusion zone. Based on available phase diagrams, none of the formed phases should be low-melting.
UR - https://www.scopus.com/pages/publications/2642568513
M3 - Conference contribution
AN - SCOPUS:2642568513
SN - 0894486772
SN - 9780894486777
T3 - Global 2003: Atoms for Prosperity: Updating Eisenhowers Global Vision for Nuclear Energy
SP - 2299
EP - 2303
BT - Global 2003
T2 - Global 2003: Atoms for Prosperity: Updating Eisenhower's Global Vision for Nuclear Energy
Y2 - 16 November 2003 through 20 November 2003
ER -