INTERACTIONS BETWEEN THE COMPONENTS IN THE ZR-CU-IN SYSTEM AT 870 K

The interactions between components in Zr-Cu-In ternary system at 870 K have been studied by X-ray and microstructure analyses. One earlier known (ZrCu2In with MnCu2Al-type) and four unknown ternary compounds h ave been found. Crystal structure of all new compounds are determined: ZrCu5-xInx (x = 0.3-1.3) - AuBe5 type of structure (space group F (4) over bar 3m, a = 6.955-7.042(2) Angstrom); ZrCuxIn3-x (x = 0.35-0.80) - AuCu3 type of structure (space group Pm (3) over bar m), a = 4.3281 -4.3079(1) Angstrom); Zr2Cu2In - Mo2FeB2 type of structure (space grou p P4/mbm), a = 7.194(2) Angstrom, c = 3.410(4) Angstrom; Zr5CuIn3 - Hf 5CuSn3 structure type (space group P6(3)/mcm, a = 8.671(2) Angstrom, c = 5.917(1) Angstrom).