Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Encased with nonfuel component
Patent
1990-10-01
1992-10-20
Hunt, Brooks H.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Encased with nonfuel component
376339, 252478, 75235, 75238, G21C 300, G21C 700, C04B 3568
Patent
active
051568047
ABSTRACT:
Neutron absorbing refractory B.sub.4 C--Gd and Gd.sub.2 O.sub.3 --Gd cermets, B.sub.4 C--Gd and Gd.sub.2 O.sub.3 --Gd metal-matrix composites, and B.sub.4 C--Gd.sub.2 O.sub.3 ceramic-ceramic composites can be manufactured by applying fundamental thermodynamic and kinetic guidelines as processing principals.
Three steps are involved in the fabrication of these new compositions of matter. First, the starting materials are consolidated into a compacted porous green body. Next, the green body is densified using the appropriate method depending on the class of material sought: cermet, metal-matrix composite, or ceramic-ceramic composite. Finally, either during the densification process or by subsequent heat treatment, new phase evolution is obtained via interfacial chemical reactions occurring in the microstructures.
The existence of a new phase has been identified in B.sub.4 C--Gd and B.sub.4 C--Gd.sub.2 O.sub.3 composites.
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Billings Garth W.
Halverson Danny C.
Johnston George M.
Hunt Brooks H.
Jenkins Daniel J.
Sartorio Henry P.
Thermal Technology Inc.
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