Interactions of Titanium and Phosphorus
with Vanadium, Chromium, or Manganese

Ya. F. Lomnitskaya

Lvov State University, Lvov, Ukraine

Received August 14, 1998

Abstract—An X-ray crystallographic study of interactions in the Ti–(V, Cr, Mn)–P systems for phosphorus
mole fractions between 0 and 0.50 is reported. Isothermal sections of the phase diagrams at a level of 1070 K
are constructed. Solid systems are formed in all systems: (Ti,V)₃P, Ti_3.0-2.4Cr_0-0.6P, and Ti_3.0-2.2Mn_0-0.8P (Ti₃P
structure type); Cr_3.0-1.9Ti_0-0.3P and Mn_3.0-1.9Ti_0-1.1P (Ni₃P structure type); V_2.0-0.8Ti_0-1.2P (anti-PbCl₂);
Mn_2.0-1.0Ti_0-1.0P (Fe₂P); Ti_1.0-0.8V_0-0.2P, Ti_1.0-0.8Cr_0-0.2P, and Ti_0-0.75Mn_0-0.25P (TiAs); and Cr_1.00-0.88Ti_0-0.12P
and Mn_1.0-0.9Ti_0-0.1P (MnP). In the Ti–Cr–P system, a new compound is found. This compound is homoge-
neous for Ti_1.2-0.5Cr_0.8-1.5P compositions. The structure of this compound for the composition TiCrP was solved
by the powder method: Fe₂P structure type, a = 0.6407(1) nm, c = 0.3311(1) nm; R = 0.093.

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