Isothermal section of the Ho–Cu–Sn ternary system at 670 K

L. Romaka; I. Romaniv; V. Romaka; M. Konyk; A. Horyn; Yu. Stadnyk

doi:10.15330/pcss.19.2.139-146

Authors

L. Romaka Ivan Franko L’viv National University
I. Romaniv Ivan Franko National University of Lviv
V. Romaka Lviv Polytechnic National University
M. Konyk Ivan Franko National University of Lviv
A. Horyn Ivan Franko National University of Lviv
Yu. Stadnyk Ivan Franko National University of Lviv

DOI:

https://doi.org/10.15330/pcss.19.2.139-146

Keywords:

Intermetallics, Phase diagrams, X-ray diffraction, Crystal structure

Abstract

The interaction of the components in the Ho-Cu-Sn ternary system was investigated at 670 K over the whole concentration range using X-ray diffraction and EPM analyses. Four ternary compounds were formed in the Ho–Cu–Sn system at 670 K: HoCuSn (LiGaGe type, space group P6₃mc), Ho₃Cu₄Sn₄ (Gd₃Cu₄Ge₄-type, space group Immm), HoCu₅Sn (CeCu₅Au-type, space group Pnma), and Ho_1.9Cu_9.2Sn_2.8 (Dy_1.9Cu_9.2Sn_2.8-type, space group P6₃/mmc). The formation of the interstitial solid solution based on HoSn₂ (ZrSi₂-type) binary compound up to 5 at. % Cu was found.

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