Isothermal sections of phase-equilibrium diagrams for the systems {terbium,dysprosium}-tungsten-boron at 1270 K

Interaction of components of the systems {Tb, Dy}-W-B have been studied by means of x-ray analysis. Isothermal sections of phase-equilibrium diagrams of the systems at 1270°C have been constructed. The existence of ternary borides with structures of the types YCrB₄ and Er₃CrB₇ has been confirmed. Solid solutions based on binary compounds and other components are not found.