Experimental study of Hf-Cu-Sn ternary system at 870 K

L. Romaka; V.V. Romaka; Yu. Stadnyk; A. Horyn

doi:10.15330/pcss.25.3.485-491

Authors

L. Romaka Ivan Franko National University of Lviv, Lviv, Ukraine
V.V. Romaka Institute for Solid State Research, IFW-Dresden, Dresden, Germany
Yu. Stadnyk Ivan Franko National University of Lviv, Lviv, Ukraine
A. Horyn Ivan Franko National University of Lviv, Lviv, Ukraine

DOI:

https://doi.org/10.15330/pcss.25.3.485-491

Keywords:

intermetallics, phase diagrams, X-ray diffraction, crystal structure, electrical transport

Abstract

Interaction of hafnium with copper and tin was studied at 870 K over the whole concentration range using X-ray diffractometry and scanning electron microscopy. At the temperature of investigation three ternary compounds are realized in the Hf-Cu-Sn system: HfCuSn (LiGaGe-type), HfCu₅Sn₂ (HfCu₅Sn₂-type), and Hf₅CuSn₃ (Hf₅CuSn₃-type). New HfCu₅Sn₂ ternary stannide crystallizes in the hexagonal space group P6₃/mmc with cell parameters a = 0.42959(7) nm, с = 1.54165(4) nm. Electrical transport properties indicated metallic type of conductivity of the all studied ternary compounds. The DFT calculations were used to evaluate chemical bonding, elastic and physical properties of the ternary phases.

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