Phase Equilibria in the Nd ― Re ― B System

XRD has been applied to component interaction in the Nd ― Re ― B system. Isothermal sections have been constructed for the phase diagram at 600°C (a region >33 at.% boron) and 800°C (>33 at.% boron). It is confirmed that it contains the previously known borides Nd₂Re₃B₆ (Pr₂Re₃B₆ structure type) and Nd₈Re_{13 ? x} B₁₂ (Pr₈Re_{13 ? x} B₁₂ structure type). Two new ternary compounds are reported: ～NdRe₄B₄ considered to have a tetragonal incommensurate structure and ～Nd₅Re₂B₆, whose structure is unknown.