ISSN 0430-6252. Physicochemical Mechanics of Materials. 2024.
Volume 60, Issue 1

X-ray phase and structural study of Ce–Zn–Ga alloys

Verbovytskyy Yu. V.
Karpenko Physico-Mechanical Institute, National Academy of Sciences of Ukraine, Lviv, Ukraine.

https://doi.org/10.15407/pcmm2024.01.070

Keywords

ternary system, Ce–Zn–Ga, sintering, X-ray diffraction analysis, intermetallics, ternary phases, crystal structure.

Cite as

Verbovytskyy Yu. V. X-ray phase and structural study of Ce–Zn–Ga alloys. Physico-chemical Mechanics of Materials. 2024. 60(1), 070-077.

https://doi.org/10.15407/pcmm2024.01.070

Abstract

The phase composition of cast and annealed Ce–Zn–Ga alloys in the area up to 33.3 at.% Ce at a temperature of 400°C was studied using X-ray powder diffraction and scanning electron microscopy. The existence of two solid solutions based on the binary compounds CeZn2 and CeGa2, and three ternary phases with the composition Ce5Zn2Ga17, CeZnGa4, and CeZn2Ga2 were confirmed. Additionally, seven new phases were synthesized for the first time, with the crystal structures of three fully determined. The CeZn3.5Ga0.5 phase crystal­lizes in the LaZn4 structure type (space group Cmcm), the Ce7Zn20Ga3 compound is iso­structural to Ce7Zn21Si2 (space group Pbam), and the Ce3Zn32Ga4 phase completes the series of structures derived from the Th2Ni17 type (space group P63/mmc).

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