Study on the binary intermetallic compounds in the Mg–Ce system

Study on the binary intermetallic compounds in the Mg–Ce system

Electron-probe microanalysis (EPMA) and X-ray diffraction (XRD) studies conducted on Mg–38 wt%Ce and Mg–66 wt%Ce alloys demonstrated the existence of two distinct intermetallic phases, Mg 3.6Ce, Mg 3Ce, with the compositions Mg 3.6–3.7Ce, Mg 3.0–3.2Ce, respectively. XRD indicates that Mg 3.6Ce is li...

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Veröffentlicht in:Intermetallics 2009-07, Vol.17 (7), p.496-503
Hauptverfasser: Zhang, X., Kevorkov, D., Pekguleryuz, M.O.
Format: Artikel
Sprache:eng
Schlagworte:
A. Intermetallics, miscellaneous
B. Phase identification
D. Microstructure
F. Diffraction
F. Electron microprobe
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container_title Intermetallics
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creator Zhang, X.
Kevorkov, D.
Pekguleryuz, M.O.
description Electron-probe microanalysis (EPMA) and X-ray diffraction (XRD) studies conducted on Mg–38 wt%Ce and Mg–66 wt%Ce alloys demonstrated the existence of two distinct intermetallic phases, Mg 3.6Ce, Mg 3Ce, with the compositions Mg 3.6–3.7Ce, Mg 3.0–3.2Ce, respectively. XRD indicates that Mg 3.6Ce is likely a defect-vacancy structure of Mg 3Ce. The μ-Mg 3Ce phase, with the Mg 3.0–3.3Ce composition and a possible orthorhombic structure, has also been discovered, which is considered a metastable high-temperature form of the Mg 3Ce phase. Based on these results a version of the phase diagram is suggested for the Mg–Ce system in the composition range of 38–70 wt%Ce which correlates well with the solidification microstructures and phases of the two alloys.
doi_str_mv 10.1016/j.intermet.2009.01.002
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subjects A. Intermetallics, miscellaneous
B. Phase identification
D. Microstructure
F. Diffraction
F. Electron microprobe
title Study on the binary intermetallic compounds in the Mg–Ce system
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