Physico-chemical Properties of Fe2P-type Uranium Intermetallic Compounds

Abstract

The structures and lattice constants of ternary uranium intermetallic compounds of UFeAl, UCoAl, UNiAl and UlrAl were examined, and thermal expansion coefficients of the intermetallic compounds were evaluated from high-temperature X-ray diffraction data. The physico-chemical properties of the intermetallic compounds such as Debye temperature and heat capacity were estimated from the sound velocities and the thermal expansion data, and the correlations between the properties were discussed. The characteristic of the metallic bonding in the intermetallic compounds does not markedly differ from that of pure metals