Experimental Investigation of Phase Equilibria in Fe–Ho System

Current study deals with the phase diagram evaluation of the Fe–Ho system. The alloys in the system have been studied by the means of SEM, EPMA, and DTA. The congruent melting phases in the system are: Ho 2 Fe 17 , HoFe 3 , HoFe 2 , and Ho 6 Fe 23 forms from the peritectic reaction. The temperatures...

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Veröffentlicht in:	Russian Journal of Physical Chemistry A 2022-12, Vol.96 (12), p.2591-2597
Hauptverfasser:	Bajenova, I., Shakirova, J., Khvan, A., Cheverikin, V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemical Thermodynamics and Thermochemistry Chemistry Chemistry and Materials Science Differential thermal analysis Eutectic composition Eutectic reactions Peritectic reactions Phase diagrams Phase equilibria Physical Chemistry
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Beschreibung
Zusammenfassung:	Current study deals with the phase diagram evaluation of the Fe–Ho system. The alloys in the system have been studied by the means of SEM, EPMA, and DTA. The congruent melting phases in the system are: Ho 2 Fe 17 , HoFe 3 , HoFe 2 , and Ho 6 Fe 23 forms from the peritectic reaction. The temperatures and the compositions of the following eutectic reactions have been found: L ⇄ (Ho) + HoFe 2 (922 ± 1°C, 66 at % Ho), L ⇄ HoFe 3 + HoFe 2 (1290 ± 1°C, 30 at % Ho), L ⇄ Ho 6 Fe 23 + Ho 2 Fe 17 (1282 ± 3°C, 20 at % Ho), L ⇄ (γFe) + Ho 2 Fe 17 (1335 ± 1°C, 9 at % Ho).
ISSN:	0036-0244 1531-863X
DOI:	10.1134/S0036024422120056