Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Encased with nonfuel component
Patent
1992-09-25
1994-01-18
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Encased with nonfuel component
376419, 376416, G21C 300
Patent
active
052805107
ABSTRACT:
A method for coating the inside surface (18) of tubular components (16) of a nuclear fuel assembly, including the steps of supporting the component within a vacuum chamber (12), positioning a source rod (20) having a field emitter structure (22) within the component, the structure being formed of material to be coated on the surface, and inducing an electrical current flow (26) through the rod sufficient to evaporate at least a portion of the emitter structure, whereby the evaporated material of the emitter structure is deposited on and adheres to the surface as a coating. Optionally, the vacuum chamber is backfilled with a reactive gas (38), and the material evaporated from the emitter structure chemically reacts with the gas before adhering to the surface. The reactive gas can be one of nitrogen, oxygen, or carbon plasma and the coating adhered to the component can be one of a nitride, oxide, or carbide, respectively.
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Gated Field Emitter Failures: Experiment and Theory. J. Browning, N. E. McGruer, S. Meassick, Chung Chan, William J. Bintz, and Mark Gilmore.
Chelliah Meena
Combuation Engineering, Inc.
Mulholland John H.
Ristas L. James
Walsh Donald P.
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