Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Encased with nonfuel component
Patent
1994-11-21
1997-12-16
Carone, Michael J.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Encased with nonfuel component
376457, 376417, 376414, 148672, 420422, G21C 300
Patent
active
056993960
ABSTRACT:
A zirconium-based alloy with a reduced ahoy content is described that has resistance to both uniform and nodular corrosion comparable to present zirconium-based alloy compositions, such as Zircaloy-2. The alloy represents in essence a modified or diluted Zircaloy-2 or Zircaloy-4. The alloys of this invention are also expected to have improved uniform corrosion resistance at under high burn-up conditions The alloy comprises 0.05-0.09 weight percent of iron, 0.03-0.05 weight percent of chromium, 0.02-0.04 weight percent of nickel, 1.2-1.7 weight percent of tin and 0-0.15 weight percent oxygen, with a balance of zirconium. The iron chromium and nickel alloying elements form precipitates in the alloy matrix. The alloy is suitable for use as a cladding material for a fuel element housing fissionable nuclear materials in water cooled nuclear fission reactor. These alloys can also be formed with a reduced nitrogen content of no more than 20 parts per million nitrogen by weight in order to provide enhanced resistance to nodular corrosion.
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Carone Michael J.
Chelliah Meena
General Electric Company
Johnson Noreen C.
Pittman William H.
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