FORMATION AND CRYSTAL-STRUCTURE OF UTI2DX

Deuterium absorption properties of U-66.7 at.% Ti alloy and the crysta l structure of obtained deuterides UTi2D4.5 and UTi2D5.2 were examined by X-ray and neutron diffraction. Consequently the structure was dete rmined as having C15 cubic structure, in which the 2U-2Ti site at 96(g ) in the space group Fd3m and the 1U-3Ti site at 32(e) were occupied b y deuterium. Interatomic distances U-D and Ti-D in both sites were nea rly equal to those in respective binary deuterides. The results explai ned the formation of UTi2H(D)(x) from U-Ti alloy with no UTi2-type com pound.