title: Low-temperature synthesis of uranium tetraboride by solid-state metathesis reactions.
abstract: A novel synthesis of uranium tetraboride (UB(4)) by solid-state metathesis reaction is demonstrated. This approach significantly lowers the temperature required to synthesize this material to < or = 850 degrees C. When UCl(4) is reacted with 2 equiv of MgB(2) at 850 degrees C, crystalline UB(4) is formed. Powder X-ray diffraction and ICP-AES data support the reduction of UCl(4) to UCl(3) as the initial step in the reaction. The UB(4) product is purified by washing with water.
authors.affiliation: Nuclear Materials Technology Division (NMT-2), Mail Stop E511, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. lupi@lanl.gov
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: Lupinetti
authors.forename: Julie L
authors.initials: JL
authors.lastname: Fife
authors.forename: Eduardo
authors.initials: E
authors.lastname: Garcia
authors.forename: Peter K
authors.initials: PK
authors.lastname: Dorhout
authors.forename: Kent D
authors.initials: KD
authors.lastname: Abney