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The Preparation and Crystal Structure of Some Ternary Silicides Containing Uranium and Transition Metals

Z. Ban ; Institute »Ruder Boskovic«, Zagreb, Croatia, Yugoslavia
M. Sikirica ; Institute »Ruder Boskovic«, Zagreb, Croatia, Yugoslavia

Puni tekst: engleski pdf 5.190 Kb

str. 143-149

preuzimanja: 51



The crystal structure of some new ternary silicides of the
general composition U 4M 5Si3 (M = Cr, Mn, Fe) h as been determined
by means of the x-ray powder diffraction method. The
structure which belongs to the C14 (MgZn2) type is characterized
by a statistical distributio'n of both kinds of smaller atoms. The
chemical composition of the monophase specimens is probably
temperature dependent. At lower temperatures it may aproach
the formula U2M 3Si. In some of these systems ternary compounds
UM2Si2 were also identified. They were found to be isostructural
with the previously reported ThM2Si2 compounds. A novel method
for the preparation of uranium alloys with the use of the electron
beam melting is described.

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