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Composite neutron absorbing coatings for nuclear criticality control

United States Patent

July 19, 2005
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
Thermal neutron absorbing composite coating materials and methods of applying such coating materials to spent nuclear fuel storage systems are provided. A composite neutron absorbing coating applied to a substrate surface includes a neutron absorbing layer overlying at least a portion of the substrate surface, and a corrosion resistant top coat layer overlying at least a portion of the neutron absorbing layer. An optional bond coat layer can be formed on the substrate surface prior to forming the neutron absorbing layer. The neutron absorbing layer can include a neutron absorbing material, such as gadolinium oxide or gadolinium phosphate, dispersed in a metal alloy matrix. The coating layers may be formed by a plasma spray process or a high velocity oxygen fuel process.
Wright; Richard N. (Idaho Falls, ID), Swank; W. David (Idaho Falls, ID), Mizia; Ronald E. (Idaho Falls, ID)
Bechtel Bwxt Idaho LLC (Idaho Falls, ID)
10/ 067,708
February 4, 2002
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to contract number DE-AC07-99ID13727 between the United States Department of Energy and Bechtel BWXT Idaho, LLC.