The United States of America As Represented by the United States

Battelle Energy Alliance, LLC

Arnold W Erickson

Douglas Lloyd Porter

Donna P Guillen

W David Swank

Michael H O'Brien

Methods of forming at least a portion of a neutron absorber include combining a first material and a second material to form a compound, reducing the compound into a plurality of particles, mixing the plurality of particles with a third material, and pressing the mixture of the plurality of particles and the third material. One or more components of neutron absorbers may be formed by such methods. Neutron absorbers may include a composite material including an intermetallic compound comprising hafnium aluminide and a matrix material comprising pure aluminum.

Neutron absorbers and methods of forming at least a portion of a neutron absorber

A method of encapsulating mixed waste in which a thermoplastic polymer having a melting temperature less than about 150.degree. C. and sulfur and mixed waste are mixed at an elevated temperature not greater than about 200.degree. C. and mixed for a time sufficient to intimately mix the constituents, and then cooled to a solid. The resulting solid is also disclosed.

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Idaho Falls, ID, United States of America

Arnold W Erickson