The isothermal section at 600 ring operatorC of the ternary Pr–Au–Sn phase diagram

The ternary Pr–Au–Sn isothermal section at 600 ring operatorC has been investigated by X-ray diffraction, optical and scanning electron microscopy and electron probe microanalysis. The ten new ternary phases τ1 PrAu2−xSnx, τ2 Pr61Au25Sn14, τ3 PrAu6−xSnx, τ4 Pr4Au11Sn5, τ5 PrAu2Sn, τ6 Pr30Au40+xSn30−x, τ8 Pr5AuSn3, τ9 Pr3Au6Sn5, τ10 Pr2Au3Sn4, τ11 Pr2Au3Sn6 have been identified and the ternary equiatomic τ7 PrAuSn compound confirmed. The structures of some of these phases have been investigated by powder diffraction methods, and the results have been reported. The τ3 PrAu6−xSnx solid solution at x=1.77 and the τ9 Pr3Au6Sn5 ternary compound have been examined by single crystal method, resulting to be cubic cI208-38.2, space group image, and orthorhombic oP28, space group Pmmn, respectively. The tie-triangles of the ternary section have been determined and their trend has been discussed. The results obtained have been compared to the Ce–Au–Sn ternary section at 750 ring operatorC.