MgCUj-type phase

Binary and Ternary Chromides. A compound of formula HfCrj has been identified in the V-Hf-Cr system. At 1470 K HfCrj has the MgCuj-type structure which transforms to a phase with a MgNij-type structure. At temperatures > 1570 K only the A-phase with a MgZuj-type structure exists. 

No ternary compounds were observed, mutual solid solubihties of binary phases were negligible. The binary Y-Al compounds YjAl (PbClj-type), YjAlj (ZrjAla-type), YAl (CrB-type), YAlj (MgCuj-type), YAI3 (NijSn-type) are in agreement with the compilation of landelli and Palenzona (1979). 

The ternary Sc-Ni phases observed are in accordance with literature data ScNis (CaCuj-type), ScjNi, (Ce2Ni7-type), ScNiz (MgCuj-type), ScNi (CsCI-type) and ScjNi (TijNi-type). For a discussion of nickel and scandium borides, see Y-Ni-B and Sc-Co-B, respectively. 

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