Experimental and computational studies of melting of the spinel phase in the Fe–Al–O ternary system

Can Agca, Greta Lindwall, Jake W. McMurray, Jörg C. Neuefeind, Zi Kui Liu, Alexandra Navrotsky

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3 Scopus citations

Abstract

The melting behavior of spinel in the Fe–Al–O system at high temperatures (1500–1800 °C) was studied by a combination of experimental and computational investigations. Differential thermal analysis (DTA) at ultra-high temperatures coupled with cooling traces on CO2 laser-heated levitated samples provided melting temperatures and the heats of fusion of (Fe,Al)3O4 spinel phases. The experimental results are in fair agreement with the predictions using a published CALPHAD description and areas for modeling improvement are identified. New insights into the melting of defect spinel are provided.

Original languageEnglish
Article number101798
JournalCalphad: Computer Coupling of Phase Diagrams and Thermochemistry
Volume70
DOIs
StatePublished - Sep 2020

Funding

This work was funded by Oak Ridge National Laboratory through PHD GO! Program and the U.S. Department of Energy Office of Nuclear Energy (DOE-NE) Advanced Fuels Campaign (AFC). The authors would like to thank Shmuel Hayun, Kristina Lilova, Pardha Maram and Sergey Ushakov (UC Davis) for assistance during the synthesis, characterization and melting experiments. Nick Botto (UC Davis) is acknowledged for his assistance with electron microprobe analysis. This work was funded by Oak Ridge National Laboratory through PHD GO! Program and the U.S. Department of Energy Office of Nuclear Energy (DOE-NE) Advanced Fuels Campaign (AFC). The authors would like to thank Shmuel Hayun, Kristina Lilova, Pardha Maram and Sergey Ushakov (UC Davis) for assistance during the synthesis, characterization and melting experiments. Nick Botto (UC Davis) is acknowledged for his assistance with electron microprobe analysis.

FundersFunder number
DOE-NE
Kristina Lilova
Pardha Maram and Sergey Ushakov
Shmuel Hayun
Office of Nuclear Energy
Oak Ridge National Laboratory
University of California, Davis

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